IC 4997 , the SIMBAD biblio

IC 4997 , the SIMBAD biblio (544 results) C.D.S. - SIMBAD4 rel 1.8 - 2024.04.25CEST04:14:01

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Keywords 		in a table in teXt, Caption, ... Nb occurence Nb objects in ref Citations
(from ADS) 		Title First 3 Authors
1896ApJ.....4..142P 20 5 Harvard College Observatory, circular no. 9. Stars having peculiar spectra. PICKERING E.C. and FLEMING W.P.
1941ApJ....93..236A 14 76 Physical processes in gaseous nebulae. XIV. Spectrophotometry of some typical planetary nebulae. ALLER L.H.
1941ApJ....93..356S 1 2 25 The evolution of a peculiar stellar spectrum Z Andromedae. SWINGS P. and STRUVE O.
1949ApJ...109...42A 11 84 Multiplet intensities for the nebular lines 4S-2D of O II. ALLER L.H., UFFORD C.W. and VAN VLECK J.H.
1951ApJ...114..407S 3 8 229 Continuous emission from planetary nebulae. SPITZER L.Jr and GREENSTEIN J.L.
1953GCRV..C......0W viz 13       D               1 15129 835 General Catalogue of Stellar Radial Velocities WILSON R.E.
1960ApJ...131..541O 19 51 Electron densities in planetary nebulae. OSTERBROCK D.E.
1962ApJ...135..371O 129 250 A distance scale for planetary nebulae based on emission-line fluxes. O'DELL C.R.
1965ApJ...142.1093O 9 29 Interaction of He I and Lyman alpha radiation. O'DELL C.R.
1965Afz.....1..225G 66 T                   1 1 4 Temperature et densite electronique dans
IC 4997. 		GURZADIAN G.A.
1965AZh....42..464V 27 14 Redetermination of absolute emission line intensities of 25 planetary nebulae. VORONTSOV-VELJAMINOV B.A., KOSTJAKOWA E.B., DOKUCHAJEVA O.D., et al.
1965AuJPh..18..187S 62 22 Preliminary radio survey of planetary nebulae south of declination 24 degrees. SLEE O.B. and ORCHISTON D.W.
1965BOTor..37..155I 103 0 The population assignement of planetary nebulae. IWANOSKA W. and KANTHAK J.
1966ApJ...143..722K 28 46 Hydrogen and Helium spectra of gaseous nebulae. KALER J.B.
1966MNRAS.132...15H 52 199 The ionization structure of planetary nebulae IV & V. HARMAN R.J. and SEATON M.J.
1966MNRAS.132..337A 73 T                   1 1 36 Changes in the planetar5y nebula
IC 4997. 		ALLER L.H. and LILLER W.
1966BAICz..17..318K 25 12 Photographic study of the variability in bright central stars of planetary nebulae on AGK2 and AGK3 plates. KOHOUTEK L.
1967AJ.....72..305K 9 3 Central star temperatures of planetary nebulae by Stoy's method. KALER J.B.
1967ApJ...150...79C 9 21 Lyman-alpha radiation densities in planetary nebulae. CAPRIOTTI E.R.
1967ApJ...150...95C 9 14 Depopulation rate of the 2 3 S states of He in planetary nebulae. CAPRIOTTI E.R.
1967ApJ...150..345T 32 23 Further observations of planetary nebulae at 10 cm wavelength, including the peculiar nebula NGC 6302. THOMPSON A.R. and COLVIN R.S.
1967ApJ...150..715K 6 1 Radio recombination lines and anomalous Balmer line intensities. KALER J.B. and LEE P.D.
1967ApJS...14..125H 549 161 Observations of southern planetary nebulae. HENIZE K.G.
1967MNRAS.135..139D 92 25 Observations of planetary nebule at 3 microwave frequencies. DAVIES J.G., FERRIDAY R.J., HASLAM C.G.T., et al.
1968AJ.....73..223L 6 ~ Level population of hydrogen gaseous nebulae. LEE P.
1968ApJ...151L..35R 7 10 A suggested depopulation mechanism for the Helium 2 3 S state in planetary nebulae. ROBBINS R.R.
1968ApJ...151..497R 2 7 89 The helium triplet spectrum in expanded nebulae. I. The capture-cascade intensities. ROBBINS R.R.
1968ApJ...151..511R 2 11 135 The helium triplet spectrum in expanding nebuale. II. Self absorption. ROBBINS R.R.
1968ApJ...154...87V 12 23 The He I lambda 10830 line in planetary nebulae and the Orion nebula. VAUGHAN A.H.
1968LAstr..82...23S 2 1 Etoiles symbiotiques. SWINGS P.
1968ApL.....1..225L 6 8 Electronic temperature of gaseous nebulae from continuum to line ratios. LEE P.D.
1968ApL.....1..227K 11 15 Electron temperatures of gaseous nebulae from Balmer decrements. KALER J.B.
1968BAICz..19..371K 3 12 Spectrophotometry of a superdense planetary nebulae M3-27. KOHOUTEK L.
1968CoPer..94..185C 9 0 Ly alpha radiation densities in planetary nebulae. CAPRIOTTI E.R.
1968SvA....12.1039N 5 ~ Absolute spectrophotometric of some IR lines. NOSKOVA R.I.
1968IAUS...34...68A 67 T                   1 11 12 Spectres de NGC 1976,6572, IC 418,
4997 dans le proche infrarouge photographique. 		ANDRILLAT Y. and HOUZIAUX L.
1968IAUS...34...87T 66 32 Observations of planetary nebulae at radio wave-lengths. TERZIAN Y.
1968IAUS...34..112T 68 5 Radio measurements of planetary nebulae. THOMPSON A.R.
1968IAUS...34..155A 61 2 The determination of electron density electron temperature and central star temperature for a series of planetary nebulae. ARHIPOVA V.P. and KOSTJAKOVA E.B.
1968IAUS...34..159A 26 1 On the methods of correction for the interstellar reddening of planetary nebulae. ARHIPOVA V.P.
1968IAUS...34..185C 9 0 Ly-alpha radiation density in planetary nebulae. CAPRIOTTI E.R.
1968IAUS...34..339A 65 53 Spectra of the central stars of planetary nebulae. ALLER L.H.
1968IAUS...34..376K 4 6 Probable variable of NGC 6572. KOELBLOED D.
1969A&A.....3..156R 22 15 Observations of planetary nebulae at 11 and 6 cm wavelengths. RIBES J.C.
1969ApJ...155..469K 80 22 Survey of high-frequency radio radiation from planetary nebulae. KAFTAN-KASSIM M.A.
1969ApJ...157L..37W 18 43 Infrared emission from planetary nebulae. WOOLF N.J.
1969ApJ...157.1231K 3 11 Faint emission lines of gaseous nebulae. KALER J.B. and ALLER L.H.
1969ApJ...157.1245S 46 174 Classification of emission line spectra of planetary nebulae. SMITH L.F. and ALLER L.H.
1969ATsir.522....1R 9 0 On the Balmer decrement of planetary nebulae. RUBLEV S.V.
1969CoLic..17..271C 30 0 Some problems concerning the collision excitation of forbidden lines in planetary nebulae. CZYZAK S.J., WALKER M.F. and ALLER L.H.
1969JRASC..63..200H 32 5 Optical position. HIGGS L.A.
1969MSRSL..17...99S 7 5 Consideration of the forbidden lines of iron in the states from Fe 0 to Fe 6+. SWINGS P. and SWINGS J.P.
1969MSRSL..17..275A 67 T                   1 4 2 Raies interdites dans le spectre ir de NGC 1976, IC 418,
IC 4997. 		ANDRILLAT Y. and HOUZIAUX L.
1969MSRSL..17..299K 6 1 Some physical characteristics of very young planetary nebulae and of their nuclei. KOHOUTEK L.
1969PASAu...1..283A 17 6 A comparison of radio-frequency and optical studies of selected planetary nebulae. ALLER L.H.
1969S&T....38...82A 19 1 The planetary nebulae. IV. ALLER H.L.
1969SvPhA..12.1039N 5 0 Absolute spectrophotometry of some infrared lines in planetary-nebulaspectra. NOSKOVA R.I.
1970A&A.....9..325V 8 2 On the population of the 2/3.s level of He in planetary nebulae. VAN RENSBERGEN W. and WUYTS J.
1970ApJ...160..887K 213 121 Chemical abundances and the parameters of planetary nebulae. KALER J.B.
1970ApJ...160..921K 12 65 Some furbidden line intensity ratios in gaseous nebulae. KRUEGER T.K., ALLER L.H. and CZYZAK S.J.
1970ApJ...161..917A 31 98 Spectra of thirty-three gazeous nebulae in yellow green with electronic camera. ALLER L.H. and WALKER M.F.
1970MNRAS.148..367S 3 11 221 Electron density in planetary nebulae. SARAPH H.E. and SEATON M.J.
1970MNRAS.150..359T 60 15 Further radio observations of planetary nebulae. THOMASSON P. and DAVIES J.G.
1970AZh....47..989K 18 1 The investigation of planetary nebulae in the near of ultraviolet region. KOSTJAKOVA E.B.
1970MmRAS..73..153W viz 1 48 330 A catalogue of early-type stars whose spectra have shown emission lines. WACKERLING L.R.
1970TriP..418....0H 9 0 Abbondanza dell'elio nelle stelle., problema degli isotopi. HACK M.
1970S&T....39...15A 8 2 The planetary nebulae. IX. ALLER L.H.
1970SoSht.166...31A 38 0 Methode of corrected interstellar reddening of planetary nebulae. ARKHIPOVA V.P.
1970TrSht..40...57V 166 3 Catalogue of the abs. int. of the emission lines in spectra planetary nebulae. VORONTSOV-VELYAMINOV B.A.
1970PN70.........1G 50 0 Basic observational data. GURZADIAN G.A.
1970PN70........80G 50 0 Temperatures of nuclei, electron temperatures, electron concentrations. GURZADIAN G.A.
1970PN70.......141G 21 0 The continuous spectrum of planetary nebulae. GURZADIAN G.A.
1970PN70.......282G 16 0 The origin of planetary nebulae. GURZADIAN G.A.
1971A&A....10..161G 166 117 The morphological classification of symmetrical nebulae. GREIG W.E.
1971A&A....14...78P 5 6 Temperature and density in gaseous nebulae. II. PERINOTTO M.
1971ApJ...163L..57G 68 T                   1 3 18 Infrared studies of galactic nebulae. II. The compact nebulae
IC 4997, VV 8 and FG Sagittae. 		GILLETT F.C., KNACKE R.F. and STEIN W.A.
1971ApJ...163..141K 6 0 The continuous spectrum of neutral He from gaseous nebulae. KALER J.B., LEE P. and ALLER L.H.
1971ApJ...169L..77R 12 12 Reduced Helium abundance nebulae. ROBBINS R.R., DALTABUIT E. and COX D.P.
1971ApJS...22..319C 609 455 Distances and distribution of planetary nebulae. CAHN J.H. and KALER J.B.
1971MNRAS.153..315H 121 32 A survey of microwave radiation from planetary nebulae. HIGGS L.A.
1971ATsir.647....7N 7 0 Absolute intensity of planetary nebulae Continua 9000, spectral region. NOSKOVA R.I.
1971AZh....48.1122K 16 2 Infrared emission from the planetary nebula 2 : observation some planetary nebula in 1.0-2.5 microns region. KROMOV G.S. and MOROZ V.I.
1971Ap&SS..10..383G 13 6 On the spectrum of a gaseous nebula of pure hydrogen. GEROLA H., SALEM M. and PANAGIA N.
1971Ap&SS..11..309H 142 1 A review of radio observation of planetary nebulae. HECKATHORN J.
1971BAAS....3...27S 67 T                   1 4 1 Observation to lambda=11 of the compact object
IC 4997, VV8, (M1-2), FG Sge, BL Lac. 		STEIN W.
1971IzPul.187....4D 139 2 Statistical investigation of the motions, distribution of planetary nebulae. DEUTSCH A.N.
1971PAB.....1....1H 443 52 Catalog of radio observations of planetary nebulae, related optical data. HIGGS L.A.
1972ApJ...171...55D 10 17 The population of He triplet states in gaseous nebulae. DRAKE G.W.F. and ROBBINS R.R.
1972ApJ...172..367G 33 65 Infrared studies of galactic nebulae continuum and line radiation from planetary nebulae. GILLETT F.C., MERRILL K.M. and STEIN W.A.
1972ApJ...173..601K 13 21 Excitation of nebular spectrum lines. KALER J.B.
1972ApJ...174..583A 4 3 74 The peculiar nebula M 2-9. ALLEN D.A. and SWINGS J.P.
1972ApJ...178..183S 30 41 Very low excitation compact nebulae. SANDULEAK N. and STEPHENSON C.B.
1972MNRAS.157...97L 12 5 The emission spectrum of the ion CIV, polarization of CIV. LEIBOWITZ E.M.
1972PASP...84..816S 6 18 Peculiar southern emission line objects with strong (O III) lambda 4363. SANDULEAK N. and STEPHENSON C.B.
1972AN....293..267G 10 1 On the infrared radiation from planetary nebulae. GURTLER J.
1972AuJPh..25...91A 74 26 Observation at 2700 MHz of selected planetary nebulae. ALLER L.H. and MILNE D.K.
1972MSRSL...5..159P 28 ~ Infrared photometry of compact planetary nebulae. PERSSON S.E. and FROGEL J.A.
1972SvA....15..892K 16 7 Infrared radiation of planetary nebulae. I. Observations at 1.0 - 2.5mu and the continuous spectrum. KHROMOV G.S. and MOROZ V.I.
1973AJ.....78..239M 153 38 Improved optical positions for 153 planetary nebulae. MILNE D.K.
1973ApJ...182..503P 35 25 Infrared photometry of planetary nebulae. PERSSON S.E. and FROGEL J.A.
1973ApJ...185..573B 6 1 Observation of He I 5016 and derived optical depths in six planetary nebulae. BERNAT A.P.
1973MNRAS.161..313H 56 20 Study of radio continuum spectra of planetary nebulae. HIGGS L.A.
1973BAAS....5..423R 6 0 Photoelectric scans of planetary nebulae. ROBBINS R.R.
1973MSRSL...5...33K 21 1 The optical spectrum of planetary nebulae. KALER J.B.
1973MSRSL...5...71N 9 0 Study of the planetary nebula spectra in near infrared. NOSKOVA R.J.
1973MSRSL...5..101H 14 2 Study of the radio spectra of planetary nebulae. HIGGS L.A.
1973MSRSL...5..159P 25 0 Infrared photometry of compact planetary nebulae. PERSSON S.E. and FROGEL J.A.
1973MSRSL...5..243K 19 2 Relative (OII) and (AIV) density indication of nebula structure. KIRKPATRICK R.C.
1973MSRSL...5..263R 14 28 Optical depth effects in the He singlet spectrum of nebulae. ROBBINS R.R. and BERNAT A.P.
1973MSRSL...5..285A 21 9 Introduction report : chemical composition of planetary nebulae. ALLER L.H. and CZYZAK S.J.
1973MSRSL...5..321S 11 9 Introductory report. SWINGS J.P.
1973MSRSL...5..351L 8 0 Several types of galactic object central ionization hydrogen. LORTET-ZUCKERMANN M.C.
1973MSRSL...5..473K 10 2 On the variability of planetary nebulae. KOSTJAKOVA E.B., ARHIPOVA V.P. and SAVEL'EVA M.V.
1973SoSht.182...24A 1 0 Temperature effects by photoelectric photometry of emission line object. ARHIPOVA V.P.
1974AJ.....79.1384C 62 235 New proper motions, statistical parallaxes and kinematics of planetary nebulae. CUDWORTH K.M.
1974ApJ...188..257T 22 92 Radio-synthesis observations of planetary nebulae. TERZIAN Y., BALICK B. and BIGNELL C.
1974ApJ...193..401C 110 191 An infrared photometric survey of planetary nebulae. COHEN M. and BARLOW M.J.
1974MNRAS.167..337A 209 64 Infrared photometry of southern emission-line stars. ALLEN D.A. and GLASS I.S.
1974SvA....18..195K 43 2 Infrared radiation of planetary nebulae. 2. New and revised observations at 1.0-2.5 mu. KHROMOV G.S.
1975A&A....38..183M 165 250 Radio observations at 5 GHz of southern planetary nebulae. MILNE D.K. and ALLER L.H.
1975A&A....39...43S 23 76 Infrared forbidden lines in H II regions and planetary nebulae. SIMPSON J.P.
1975A&A....41...99A 17 8 Spectres de quelques nebuleuses planetaires entre 8000 et 11000 A. ANDRILLAT Y., BARANNE A. and HOUZIAUX L.
1975ApJ...197..635A 1 2 12 Neon III in planetary nebulae. AHERN F.J.
1975Afz....11..249N 68 T                   1 1 3 The spectrum of the planetary nebula
IC 4997 in the near infrared. 		NOSKOVA R.I.
1975BAAS....7..244T 5 2 The structure of planetary nebulae. TERZIAN Y.
1976AJ.....81..407C 171 71 Interstellar extinction: a calibration by planetary nebulae. CAHN J.H.
1976ApJ...204..441B 11 6 Radio synthesis observations of planetary nebulae. II. A search for sub-arcsecond structure. BALICK B. and TERZIAN Y.
1976ApJ...204..445A 52 32 Electron densities in gaseous nebulae. ALLER L.H. and EPPS H.W.
1976ApJ...206..658G 1 11 92 The excitation of permitted lines in gaseous nebulae. GRANDI S.A.
1976ApJ...210..843K 35 57 The exciting stars of low-excitation planetary and diffuse nebulae. KALER J.B.
1976ApJS...31..517K 334 358 A catalog of relative emission line intensities observed in planetary and diffuse nebulae. KALER J.B.
1976AZh....53..534K 39 0 Evolution of planetary nebulae and their nuclei-analytical review of spectrophotometric observational data. KHROMOV G.S.
1976AZh....53..762K 76 4 Evolution of planetary nebulae and their nuclei correction for stellar absorption and typical nebular spectrum KHROMOV G.S.
1976AZh....53..961K 96 4 Evolution of the planetary nebulae and their nuclei: density of the planetary nebulae and its evolutionary changes. KHROMOV G.S.
1976AZh....53.1210N 9 3 Detailed spectrophotometry of the planetary nebulae NGC 6572, 6891 and 7662 in the near infrared. NOSKOVA R.I.
1976MSRSL...9..271A 83 ~ Central Stars of planetary nebulae. ALLER L.H.
1976MSRSL...9..355A 15 ~ Spectres des etoiles chaudes et des nebuleuses planetaires dans le proche infrarouge. ANDRILLAT Y.
1976MmSAI..47..313F 12 2 Theoretical predictions of the ultraviolet spectra of planetary nebulae. FLOWER D.R.
1976SoSht.195....3K 53 0 The weighted average emission-line intensities in 54 planetary nebulae spectra. KOSTYAKOVA E.B.
1976TrSht..47..222K 53 0 The analysis of the catalogue of the planetary nebulae spectral line intensities. KOSTYAKOVA E.B.
1976Lub75...1...59R 8 0 Photoelectric scans of the planetary nebulae NGC 7027. ROBBINS R.R.
1977A&A....58L..29M 35 3 The evolution of line intensity ratios in planetary nebulae. MINELLO S. and SABBADIN F.
1977A&A....60L...9M 41 3 Statistical properties of planetary nebulae: central stars. MINELLO S. and SABBADIN F.
1977A&A....61..459C 7 32 The eruptive BQ[] star HM Sagittae. CIATTI F., MAMMANO A. and VITTONE A.
1977A&AS...27..277G 7 3 A compilation of fluorescent molecular lines originating in or around stellar objects with strong atomic emission lines. GAHM G.F., LINDGREN B. and LINDROOS K.P.
1977A&AS...30..217A 982 4 Bibliographical index of planetary nebulae for the period 1965-1976. ACKER A. and MARCOUT J.
1977A&AS...30..381W 63 14 Positions of radio stars. WALTER H.G.
1977ApJ...211L..97Z 74 98 Expanding molecular envelopes around evolved stars. ZUCKERMAN B., PALMER P., MORRIS M., et al.
1977ATsir.947....3N 9 0 The observations of 9 planetary nebulae in the spectral region 6000-7000A. NOSKOVA R.I.
1977JRASC..71...67A 23 32 The visual and near-infrared spectra of planetary nebulae nuclei. ALLER L.H.
1977PW&SO...2...71S 120 17 New position determinations, and other data, for 1280 known Halpha-emission stars in the Milky Way. STEPHENSON C.B. and SANDULEAK N.
1978A&A....68..251C 1 6 46 On the further evolution of V1016 Cyg and HM Sge: mass ejection in proto planetary nebulae. CIATTI F., MAMMANO A. and VITTONE A.
1978A&AS...33..223S 115 13 Statistical properties of planetary nebulae: graphic presentation. SABBADIN F. and MINELLO S.
1978A&AS...33..367A 331 218 A new synthetic distance scale for planetary nebulae. ACKER A.
1978ApJ...219L..33B 2 10 114 Detection of molecular hydrogen emission from five planetary nebulae. BECKWITH S., PERSSON S.E. and GATLEY I.
1978ApJ...223..901A 8 39 Photoelectric spectrophotometry of compact nebulae. AHERN F.J.
1978ApJ...226..947K 93 103 The enrichment of He in planetary nebulae. KALER J.B.
1978ApL....19...75B 3 13 The spectrum of HM Sge: a planetary nebulae excited by a Wolf-Rayet star. BROWN L.W., FEIBELMAN W.A., HOBBS R.W., et al.
1978IAUC.3258....0P 68 T                   1 1 ~
IC 4997. 		PURGATHOFER A.T.
1978SvAL....4..276N 8 0 Parameters of eight planetary nebula nuclei. NOSKOVA R.I.
1978IAUS...76...79G 19 0 Ultraviolet observations of planetary nebulae. GURZADYAN G.A.
1978IAUS...76..122N 8 0 The detailed spectrophotometry of 8 planetary nebulae in the spectral region lambda lambda 6,000-11,000. NOSKOVA R.I.
1978IAUS...76..124M 11 3 Observations of cool dust in planetary nebulae. MOSELEY H. and HARPER D.A.
1978IAUS...76..131S 2 2 23 Advances in studies of physical processes. SEATON M.J.
1978IAUS...76..209K 5 0 On the variability of the planetary nebulae. KOSTYAKOVA E.B.
1978IAUS...76..281M 6 11 Dust in planetary nebulae. MATHIS J.S.
1979A&A....72L...1F 1 3 26 The EUV spectra of young planetary nebulae. FLOWER D.R., NUSSBAUMER H. and SCHILD H.
1979A&AS...36..169M 145 23 2,7 GHz radio frequency measurements of planetary nebulae. MILNE D.K. and WEBSTER B.L.
1979AJ.....84..345S 71 21 A survey of infrared stars and planetary nebulae for circumstellar OH emission. SILVERGLATE P., ZUCKERMAN B., TERZIAN Y., et al.
1979ApJ...229..587G 12 26 The 10 micron properties of planetary nebulae. GRASDALEN G.L.
1979ApJ...231..111F 69 T                   1 2 16 Reversal of the (O III) lambda 4363/H-gamma lambda 4340 ratio in the planetary
IC 4997. 		FEIBELMAN W.A., HOBBS R.W., McCRACKEN C.W., et al.
1979MNRAS.188..669F 72 T                   1 1 20 On the rapid emission-line variations in
IC 4997. 		FERLAND G.J.
1979Ap&SS..62..397A 44 180 A spectroscopic study of moderately bright planetary nebulae. ALLER L.H. and CZYZAK S.J.
1979BAAS...11..627E 68 T                   1 4 0 Interpretations of the IUE observations of NGC 6572, 6818, 7009 and
IC 4997. 		ETZEL P.B. and ALLER L.H.
1979IzKry..59..167G 45 5 The abundance of helium, oxygen and neon in planetary nebulae. GOLOVATYI V.V., PRONIK V.I. and YATSYK O.S.
1979SvA....23..297N 9 1 Physical parameters of nine planetary nebulae. NOSKOVA R.I.
1979SvA....23..425P 168 12 Evolution of planetary nebulae : the temperature of their central stars. PILYUGIN L.S. and KHROMOV G.S.
1980A&A....89...33A 96 29 Relations between chemical, spatial and kinematic properties of planetary nebulae. ACKER A.
1980ApJ...237..486D 12 51 Infrared line measurements and the abundance of sulfur in planetary nebulae. DINERSTEIN H.L.
1980ApJ...238..892M 1 13 113 Observations of cool dust in planetary nebulae. MOSELEY H.
1980ApJ...239..592K 76 12 Neutral oxygen and nitrogen lines in planetary nebulae. KALER J.B.
1980ApJ...241..719C 12 20 Nebular and auroral transitions of (Ar IV) in some planetary nebulae. CZYZAK S.J., SONNEBORN G., ALLER L.H., et al.
1980MNRAS.193..511F 72 T                   1 1 23 Ultraviolet spectra of planetary nebulae. II. The young PN
IC 4997. 		FLOWER D.R.
1980RMxAA...5....9P 40 98 On the helium and nitrogen enrichment of the interstellar medium by planetary nebulae. PEIMBERT M. and SERRANO A.
1980IUE80......557P 15 ~ New insights into the physical state of gaseous nebulae. PEIMBERT M.
1980IUE80......663B 24 ~ An atlas of emission line fluxes of planetary nebulae in the 1150-3200A region. BOGGESS A., FEIBELMAN W.A. and McCRACKEN C.W.
1980PhDT.........3D 116 17 A photometric investigation of possible binary occurrence in the central stars of seventeen planetary nebulae. DRUMMOND J.D.
1981A&A....94..365K 12 42 Study of selected stellar planetary nebulae. KOHOUTEK L. and MARTIN W.
1981A&A....95..100H 9 19 Wavelengths and profiles of the (SIII) 3p2,1-1d2 lines in some emission nebula. HIPPELEIN H. and MUNCH G.
1981A&A....99..218P 70 T                   1 1 13 On the variability of the (OIII) 4363/Hgam 4340 line ratio in the young planetary nebula
IC 4997 in 1979-80. 		PURGATHOFER A. and STOLL M.
1981A&A...103L...3S 25 16 Line widths in peculiar emission line objects. SWINGS J.P. and ANDRILLAT Y.
1981ApJ...246..807F 10 20 Electron densities for 10 planetary nebulae derived from the CIII 1907/1909 ratio. II. FEIBELMAN W.A., BOGGESS A., McCRACKEN C.W., et al.
1981ApJ...248..189N 1 10 51 Dust in planetary nebulae. NATTA A. and PANAGIA N.
1981ApJ...249..201K 53 38 Carbon in planetary nebulae. KALER J.B.
1981ApJ...249..592B 35 67 The abundances of neon, sulfur and argon in planetary nebulae. BECK S.C., LACY J.H., TOWNES C.H., et al.
1981PASP...93...93H 3 4 A peculiar emission-line object from the Tololo survey. HAWLEY S.A.
1981AAOPr.154....1A 24 0 8-13 mmuD spectrophotometry of compact planetary nebulae and emission line objects. AITKEN D.K. and ROCHE P.F.
1981ATsir1166....4A 6 0 The photoelectric UBV-Observations of variable planetary nebulae during 1968-1980. ARHIPOVA V.P. and KOSTYAKOVA E.B.
1981SSRv...28..307V 42 6 A bibliography on galactic Wolf-Rayet literature 1867-1980. Appendix to the sixth catalogue of galactic Wolf-Rayet stars, their past and present. VAN DER HUCHT K.A., CONTI P.S., LUNDSTROM I., et al.
1981SBS80.R....517I 80 ~ Temperature determination of exciting stars in highly excited planetary nebulae and symbiotic stars. IIJIMA T.
1982A&A...110..105S 57 45 Internal motions in planetary nebulae. SABBADIN F. and HAMZAOGLU E.
1982A&A...116...80S 6 0 The far-UV spectrum of the low-excitation planetary nebula HD 138403. SURDEJ J. and HECK A.
1982A&AS...50..209M 397 90 Radio observations at 14.7 GHZ of southern planetary nebulae. MILNE D.K. and ALLER L.H.
1982AJ.....87..555F 24 26 E(B-V) extinction values for 24 planetary nebulae derived from IUE data. FEIBELMAN W.A.
1982ApJ...253..679K 70 T                   1 1 7 Physical variations in the planetary nebula
IC 4997. 		KISER J. and DAUB C.T.
1982ApJ...258..562F 70 T                   1 3 23 IUE observations of proto-planetary and variable planetary nebulae. II. A search for variability in
IC 4997 and NGC 6905. 		FEIBELMAN W.A.
1982ApJ...263L..69F 5 5 Ultraviolet shell formation at V1016 Cygni. FEIBELMAN W.A.
1982MNRAS.198..321P 53 83 Radio observations of early-type emission-line stars and related objects. PURTON C.R., FELDMAN P.A., MARSH K.A., et al.
1982MNRAS.199..141C 196 30 Observations of 196 southern planetary nebulae at 408 MHZ. CALABRETTA M.R.
1982MNRAS.199..649R 84 97 Measurements of expansion velocities in planetary nebulae. ROBINSON G.J., REAY N.K. and ATHERTON P.D.
1982MNRAS.200..217A 1 24 135 8-13 mmuD spectrophotometry of compact planetary nebulae and emission line objects. AITKEN D.K. and ROCHE P.F.
1982AZh....59..326G 9 2 Can planetary nebulae rotate ? GRININ V.P.
1982Ap&SS..84..495C 6 6 Integrated fluxes for emission lines in the ultraviolet spectra of several P.N. CARPENTER K.G. and CZYZAK S.J.
1982BAAS...14..654L 2 0 Near infrared spectrophotometry of planetary nebulae. LEVAN P.D. and RUDY J.
1982PSCDS...3....0A 452 ~ Catalogue of the central stars of true and possible planetary nebulae. ACKER A., GLEIZES F., CHOPINET M., et al.
1982PTarO..49...40N 9 1 On some characteristics of emission spectra of carbon and nitrogen ions in planetary nebulae. NIKITIN A.A., SAPAR A.A., FEKLISTOVA T.H., et al.
1982IAUCo..70...61C 20 ~ Properties of symbiotic stars from studies in the optical region. CIATTI F.
1983A&A...122..335F 15 9 Profiles and intensity ratios of the C IV lambda 1548, 1550 emission lines in planetary nebulae. FEIBELMAN W.A.
1983A&A...126...31P 51 148 The temperature of central stars of planetary nebulae : the energy-balance method. PREITE-MARTINEZ A. and POTTASCH S.R.
1983A&AS...54..315A 1436 15 Index and cross-identification of planetary nebulae. ACKER A., MARCOUT J., OCHSENBEIN F., et al.
1983ApJ...272..137L 9 18 Near-infrared spectrophotometry of planetary nebulae. LE VAN P.D. and RUDY R.J.
1983ApJS...52..399S 499 203 Radial velocities of planetary nebulae. SCHNEIDER S.E., TERZIAN Y., PURGATHOFER A., et al.
1983ATsir1270....4A 69 T                   1 1 0 The monotonous decrease of the UBV-brightness of the
IC 4997 planetary nebula during 1968-1982. 		ARHIPOVA V.P. and KOSTYAKOVA E.B.
1983ATsir1271....1K 7 0 The study of the photometric variability of 6 planetary nebulae in 1968-1982. KOSTYAKOVA E.B.
1983MmSAI..54..511C 87 4 Planetary nebulae: IUE results. CERRUTI-SOLA M. and PERINOTTO M.
1983IAUS..103..105B 18 72 Observations of dust in planetary nebulae. BARLOW M.J.
1983IAUS..103..129S 14 10 Some recent results from UV observations. SEATON M.J.
1983IAUS..103..487T 13 8 Final review. TERZIAN Y.
1983IAUS..103..532K 6 2 UBV-observations of variable planetary nebulae. KOSTYAKOVA E.B.
1984A&A...136..181S 97 53 The interpretation of internal motions in planetary nebulae. SABBADIN F., GRATTON R.G., BIANCHINI A., et al.
1984A&A...137...92P 77 31 The dynamics, evolution and formation rate of planetary nebulae. PHILLIPS J.P.
1984A&A...138...10P 45 181 IRAS measurements of planetary nebulae. POTTASCH S.R., BAUD B., BEINTEMA D., et al.
1984A&A...140..141P 57 8 Constraints upon visual dust opacities in planetary nebulae. PHILLIPS J.P.
1984A&AS...55..253M 657 140 A catalogue of distances of planetary nebulae. MACIEL W.J.
1984A&AS...58..273S 163 86 A catalogue of expansion velocities in planetary nebulae. SABBADIN F.
1984AJ.....89..501T 38 14 Arecibo interferometer observations of compact planetary nebulae. TURNER K.C. and TERZIAN Y.
1984ApJ...279..252K 2 27 270 The nature of symbiotic stars. KENYON S.J. and WEBBINK R.F.
1984ApJ...287..945K 11 9 On bowen enhancement of the N III spectrum under solar and nebular conditions. KASTNER S.O. and BHATIA A.K.
1984MNRAS.208..399I 55 38 Two-frequency VLA observations of compact planetary nebulae. ISAACMAN R.
1984MNRAS.209....1C 68 19 Optical positions and proper motions of radio stars CLEMENTS E.D. and ARGYLE R.W.
1984MNRAS.209..889S 14 15 High dispersion spectra of compact planetary nebulae. SABBADIN F.
1984Afz....20..503K 46 5 Carbon abundances in planetary nebulae. KHOLTYGIN A.F.
1984ATsir1341....4K 69 T                   1 1 0 On the spectral variability of the planetary nebula
IC 4997. 		KOSTYAKOVA E.B.
1984Ap&SS.107...19A 316 56 Statistical survey of planetary nebulae : distances, masses, and distribution in the Galaxy. AMNUEL P.R., GUSEINOV O.H., NOVRUZOVA H.I., et al.
1984S&W....23..178G 5 0 Planetarische Nebel. GIESEKING F.
1985ApJ...290L..35G 1 21 150 MgS grain component in circumstellar shells. GOEBEL J.H. and MOSELEY S.H.
1985MNRAS.213...59W 80 77 JHK photometry of planetary nebulae. WHITELOCK P.A.
1985Ap&SS.113...59A 107 10 The parameters of planetary nebulae and their central stars derived from observations. AMNUEL P.R., GUSEINOV O.H., NOVRUZOVA H.I., et al.
1985BAAS...17..547S 2 ~ A search for atomic hydrogen associated with planetary nebulae and evolved stars. SILVERGLATE P.R., SCHNEIDER S.E. and ALTSCHULER D.R.
1985IBVS.2681....1K viz 653 609 The 67th name-list of variable stars. KHOLOPOV P.N., SAMUS N.N., KAZAROVETS E.V., et al.
1986A&A...157..191G 24 62 Distances to planetary nebulae. II. HI absorption observations. GATHIER R., POTTASCH S.R. and GOSS W.M.
1986A&A...160...31S 127 27 Statistical evolutionary properties of planetary nebulae: thicknesses of the nebulae and temperatures of the stars. SABBADIN F.
1986ApJ...301..772Z 138 244 Origin of planetary nebulae: morphology, carbon-to-oxygen abundance ratios, and central star multiplicity. ZUCKERMAN B. and ALLER L.H.
1986ApJ...303..451K 49 48 Ground-based and IRAS observations of compact planetary nebulae. KWOK S., HRIVNAK B.J. and MILONE E.F.
1986ApJ...305L..85A 71 T                   1 3 35 Detection of atomic hydrogen in the young planetary nebula
IC 4997. 		ALTSCHULER D.R., SCHNEIDER S.E., GIOVANARDI C., et al.
1986ApJ...308..337K 31 40 C+2 electron temperatures in planetary nebulae. KALER J.B.
1986ApJS...61..105L 949 82 5 GHz radio structure and optical identifications of sources from the MG survey. II. Maps and finding charts. LAWRENCE C.R., BENNETT C.L., HEWITT J.N., et al.
1986ApJS...61..159C 1 10 73 Atomic structure calculations and nebular diagnostics. CZYZAK S.J., KEYES C.D. and ALLER L.H.
1986ATsir1431....3A 69 T                   1 0 The monotonous decrease of the UBV-brightness of the planetary nebula IC
4997 continues. 		ARKHIPOVA V.P. and KOSTYAKOVA E.B.
1986ATsir1431....4K 69 T                   1 1 0 New results of spectral variability of the planetary nebula
IC 4997. 		KOSTYAKOVA E.B.
1986PTarO..51...82I 69 T                   1 2 0 The emission line spectrum of HeI in
IC 4997 and NGC 7662. 		ILMAS M.
1987ApJ...313..268H 68 38 Mass distribution and evolutionary schema for central stars of planetary nebulae. HEAP S.R. and AUGENSEN H.J.
1987ApJ...314..572S 38 27 Atomic hydrogen in planetary nebulae. SCHNEIDER S.E., SILVERGLATE P.R., ALTSCHULER D.R., et al.
1987ApJ...319..403K 1 7 30 Emission-line ratios for O III in gaseous nebulae and a comparison between theory and observation. KEENAN F.P. and AGGARWAL K.M.
1987ApJ...319..407F 130 43 The (C III lambda1909 /Si III lambda1892) ratio as a diagnostic for planetary nebulae and symbiotic stars. FEIBELMAN W.A. and ALLER L.H.
1987AZh....64..724G 51 3 Determination of temperature of planetary nebulae nucleus from the relative intensities of the lines He I/H-beta and He II/H-beta. GOLOVATYJ V.V.
1987PTarO..52..270N 8 0 The problems of spectroscopy of the transitional region in planetary nebulae. NIKITIN A.A., KHOLTYGIN A.F. and FEKLISTOVA T.H.
1987RMxAA..14..534P 30 13 JHK photometry of compact planetary nebulae. PENA M. and TORRES-PEIMBERT S.
1987RMxAA..14..567T 20 0 Galactic confusion and the detection of 1665 and 1667 MHz OH lines in the neighborhood of planetary nebulae. TURNER K.C., TERZIAN Y. and PAYNE H.
1987IAUS..120..339S 36 4 The distribution of molecular hydrogen in planetary nebulae. STOREY J.W.V., WEBSTER B.L., PAYNE P., et al.
1987IAUS..122..501G 70 T                   1 1 0 Atomic hydrogen in the planetary nebula
IC 4997. 		GIOVANARDI C., ALTSCHULER D.R., SCHNEIDER S.E., et al.
1987PN86........45R 23 ~ Spectroscopy at 8-13 mum as a probe of the carbon to oxygen ratio in planetary nebulae. ROCHE P.F.
1987PN86........55R 17 ~ Proto-planetary nebulae. RODRIGUEZ L.F.
1987PN86.......221P 158 ~ Near-infrared photometry of IRAS planetary nebulae. PERSI P., PREITE MARTINEZ A., FERRARI-TONIOLO M., et al.
1988A&A...202..203L 66 16 IRAS pointed observations of planetary nebulae. LEENE A. and POTTASCH S.R.
1988A&A...207L...5M 4 10 A stronger He II 4686 in the spectrum of the planetary nebula NGC 6572. MENDEZ R.H., MANCHADO A. and HERRERO A.
1988ApJ...324..501Z 1 31 183 Molecular hydrogen maps of extended planetary nebulae: the Dumbbell, the Ring, and NGC 2346. ZUCKERMAN B. and GATLEY I.
1988ApJ...326..368P 71 55 A young planetary nebula with OH molecules: NGC 6302. PAYNE H.E., PHILLIPS J.A. and TERZIAN Y.
1988MNRAS.231.1025M 11 15 Magnesium abundances in planetary nebulae and interstellar absorption of Mg II lambda 2800 A. MIDDLEMASS D.
1988MNRAS.235..533W 54 51 The systematics and distribution of molecular hydrogen in planetary nebulae. WEBSTER B.L., PAYNE P.W., STOREY J.W.V., et al.
1988MNRAS.235.1245A 1 7 30 Mg-H+ charge transfer and Mg line intensities in gaseous nebulae. ALLAN R.J., CLEGG R.E.S., DICKINSON A.S., et al.
1988Ap&SS.149..343G 109 20 The temperatures of the nuclei of high-excitation planetary nebulae. GURZADYAN G.A.
1988IUEEN..29...45. 439 0 Merged log of IUE observations.
1988RMxAA..16..105F 48 15 Vertical abundance gradients of planetary nebulae. FAUNDEZ-ABANS M. and MACIEL W.J.
1988IUE88...2..179F 4 ~ The ultraviolet spectrum of AS 201 : a planetary nebula. FEIBELMAN W.A.
1989A&A...217..157Z 183 111 OH maser emission from young planetary nebulae. ZIJLSTRA A.A., TE LINTEL HEKKERT P., POTTASCH S.R., et al.
1989A&AS...77...39T 147 31 Magnitudes of central stars of southern planetary nebulae. TYLENDA R., ACKER A., GLEIZES F., et al.
1989A&AS...77..487A 461 27 The absolute H-beta fluxes for southern planetary nebulae. ACKER A., STENHOLM B. and TYLENDA R.
1989A&AS...78..301W 286 159 A catalogue of expansion velocities of galactic planetary nebulae. WEINBERGER R.
1989A&AS...80..201A 91 85 Spectrophotometry of southern planetary nebulae. I. Plasma diagnostics. ACKER A., KOEPPEN J., STENHOLM B., et al.
1989A&AS...81..309P 390 47 The energy-balance temperature of central stars of galactic planetary nebulae. PREITE-MARTINEZ A., ACKER A., KOEPPEN J., et al.
1989ApJ...340..932T 2 4 33 VLA observations of circumnebular neutral hydrogen in IC 418. TAYLOR A.R., GUSSIE G.T. and GOSS W.M.
1989ApJ...343..811S 150 130 Electron densities in planetary nebulae. STANGHELLINI L. and KALER J.B.
1989ApJ...344..826A 12 39 X-ray observations of planetary nebulae with the EXOSAT satellite. APPARAO K.M.V. and TARAFDAR S.P.
1989ApJ...345..306L 232 66 Properties and evolution of dust grains in planetary nebulae. LENZUNI P., NATTA A. and PANAGIA N.
1989ApJ...346..201H 93 119 CO in planetary nebulae. HUGGINS P.J. and HEALY A.P.
1989ApJ...346..799R 112 T K                 1 1 28 The near-infrared oxygen I lines of the planetary nebula
IC 4997. 		RUDY R.J., ROSSANO G.S. and PUETTER R.C.
1989ATsir1537....9K 70 T                   1 1 0 An unexpected UBV and spectral behaviour of the planetary nebula
IC 4997 = QV Sge in 1985-88. 		KOSTYAKOVA E.B.
1989Ap&SS.154...21A 348 16 Planetary nebulae in the galaxy. AMNUEL P.R., GUSEINOV O.H. and RUSTAMOV Y.S.
1989SSRv...51..339K 41 8 Planetary nebulae. KHROMOV G.S.
1989IAUS..131...17T 15 8 Radio images of planetary nebulae. TERZIAN Y.
1989IAUS..131...56K 70 T                   1 1 0 The photometric and spectral variability of the planetary nebula
IC 4997. 		KOSTYAKOVA E.B.
1989IAUS..131..129R 9 16 Molecules and neutral hydrogen in planetary nebulae. RODRIGUEZ L.F.
1989IAUS..131..209T 70 T                   1 2 5 Detection of OH maser emission at 1667 MHz from
IC 4997. 		TAMURA S. and KAZES I.
1989IAUS..131..217M 3 1 Magnesium abundances in planetary nebulae and interstellar absorptionof Mg II lambda 2800A. MIDDLEMASS D.
1989IAUS..131..567A 33 1 Summarizing remarks on the structure and evolution of planetary nebulae and properties of their central stars. ALLER L.H.
1990A&A...232..195T 4 7 Radio and optical sudies of compact planetary nebulae. TAMURA S., KAZES I. and SHIBATA K.M.
1990A&A...236..223G 40 12 Extinction-independent determination of temperatures for central stars of planetary nebulae. GREWING M. and NERI R.
1990AJ....100..485V 178 39 The IRAS low-resolution spectra of planetary nebulae. VOLK K. and COHEN M.
1990ApJ...351..515T 1 9 47 Circumnebular neutral hydrogen in planetary nebulae. TAYLOR A.R., GUSSIE G.T. and POTTASCH S.R.
1990ApJ...357..548F 63 33 Ultraviolet Fe VII absorption lines in planetary nebula nuclei, hot subdwarfs, and hot degenerate objects. FEIBELMAN W.A. and BRUHWEILER F.C.
1990PASP..102.1301T 17 8 Expansion analyses on low-excitation planetary nebulae with stellar images. TAMURA S. and SHIBATA K.M.
1990AcASn..31..267X 85 3 Optical positions of the radio stars and the radio sources. XU T.-Q., LU P.-Z., WANG S.-H., et al.
1990BAAS...22..813L 2 1 A search for circumstellar and interstellar absorption features towards planetary nebulae using archival IUE spectra. LUHMAN M.L. and DINERSTEIN H.L.
1991A&A...250..179Z 66 82 Spectral energy distribution of compact planetary nebulae. ZHANG C.Y. and KWOK S.
1991A&A...252..331M 1 3 13 Spatially resolved high resolution spectroscopy of the extremely young planetary nebula Vy 2-2. MIRANDA L.F. and SOLF J.
1991A&AS...89...77T 352 67 The B and V magnitudes of the central stars of planetary nebulae. TYLENDA R., ACKER A., STENHOLM B., et al.
1991A&AS...90...89A 876 46 The absolute H-beta fluxes for galactic planetary nebulae. ACKER A., STENHOLM B., TYLENDA R., et al.
1991ApJ...372..215K 72 66 Central star temperatures of low-excitation planetary nebulae. KALER J.B. and JACOBY G.H.
1991ApJ...374..227H 62 14 Spatial studies of planetary nebulae with IRAS. HAWKINS G.W. and ZUCKERMAN B.
1991ApJS...76..687P 211 103 Chemical abundances in planetary nebulae: basic data and correlations between elements. PERINOTTO M.
1991MNRAS.253...75G 15 32 Observations of the 2-mu.m unidentified lines in planetary nebulae. GEBALLE T.R., BURTON M.G. and ISAACMAN R.
1991Ap&SS.175..191G 8 2 Planetary nebula with a neutral envelope ? GURZADYAN G.A., EGIKYAN A.G. and TERZIAN Y.
1991Ap&SS.181...73G 144 9 Excitation class of nebulae - an evolution criterion ? GURZADYAN G.A. and EGIKYAN A.G.
1991Ap&SS.186..277K 4 0 The ratio of optical to near-infrared emission line strengths in SII as electron density diagnostics for planetary nebulae. KEENAN F.P.
1991ChA&A..15...19X 83 ~ Optical positions of radio stars and radio sources. XU T.-Q., LU P.-Z., WANG S.-H., et al.
1991IAUC.5319....1F 70 T                   1 1 1
IC 4997. 		FEIBELMAN W.A. and ALLER L.H.
1991TrSht..62..143K 14 2 Study of planetary nebula variability. Catalogue of photoelectric UBV-brightness of 7 planetary nebulae. KOSTYAKOVA E.B.
1992A&A...262..271M 151 50 Kinematics of disk planetary nebulae. MACIEL W.J. and DUTRA C.M.
1992A&A...266..486S 214 35 Comparison of two methods for determining the interstellar extinction of planetary nebulae. STASINSKA G., TYLENDA R., ACKER A., et al.
1992A&AS...94..399C viz 772 454 A catalogue of absolute fluxes and distances of planetary nebulae. CAHN J.H., KALER J.B. and STANGHELLINI L.
1992A&AS...95..337T 925 103 The extinction constants for galactic planetary nebulae. TYLENDA R., ACKER A., STENHOLM B., et al.
1992ApJ...384..536R 1 4 22 0.8-1.6 micron spectroscopy of the planetary nebula NGC 7027. RUDY R.J., ERWIN P., ROSSANO G.S., et al.
1992MNRAS.257..317K 69 54 Distances for galactic planetary nebulae using mean [O II] doublet ratio electron densities. KINGSBURGH R.L. and BARLOW M.J.
1992PASP..104..339F 72 T                   3 24 Variability of emission lines in te planetary nebulae IC 4997 and NGC 6572. FEIBELMAN W.A., ALLER L.H. and HYUNG S.
1992A&ARv...4..215P 74 33 Evolution of planetary nebulae. POTTASCH S.R.
1992Ap&SS.190..219G 1 1 The possibility of transition radiation in planetary nebulae. GURZADYAN G.A.
1992Ap&SS.193..105G 70 T                   1 3 Periodicity in spectral variations of IC 4997 ? GURZADYAN G.A.
1992BAAS...24.1180H 70 T                   1 ~ Spectrum of the variable planetary nebula IC 4997 (PK 58-10 1). HYUNG S. and ALLER L.H.
1992PAZh...18..802K 7 ~ The mean integral UBV-magnitudes of 7 planetary nebulae for 1968-1988. KOSTYAKOVA E.B.
1992ESOPN...1....1A viz 1829 ~ Strasbourg-ESO Catalogue of Galactic Planetary Nebulae ACKER A., OCHSENBEIN F., STENHOLM B., et al.
1993A&AS..102..595T 86 144 Wolf-Rayet nuclei of planetary nebulae. Observations and classification. TYLENDA R., ACKER A. and STENHOLM B.
1993AJ....105.1002R 5 12 Near-infrared and ultraviolet spectrophotometry of the young planetary nebula Hubble 12. RUDY R.J., ROSSANO G.S., ERWIN P., et al.
1993AJ....105.1860C viz 177 64 A model of the 2-35 microm. point source infrared sky. COHEN M.
1993ApJ...410..426K 6 9 The ratio of optical-to-infrared emission line strengths in Ar III as electron density diagnostics for planetary nebulae. KEENAN F.P. and CONLON E.S.
1993ApJ...410..430K 110 T K                 1 18 Fe III emission lines in the optical spectrum of the planetary nebula
IC 4997. 		KEENAN F.P., ALLER L.H., HYUNG S., et al.
1993ApJS...88..137Z 433 106 Trace of planetary nebula evolution by distance-independent parameters. ZHANG C.Y. and KWOK S.
1993MNRAS.260..855T 56 1 The presence of fe VII and of low-ionization features in the UV spectra of central stars of planetary nebulae. TWEEDY R.W.
1993MNRAS.261..263A 40 24 The features of chemical abundances in galactic planetary nebulae. AMNUEL P.R.
1993MNRAS.261..465L 39 26 Observations of the Bowen fluorescence mechanism and charge transfer in planetary nebulae - I. LIU X.-W. and DANZIGER J.
1993PASP..105..595F 3 4 The ultraviolet spectrum of the planetary nebula Vy 2-2. FEIBELMAN W.A.
1993Ap&SS.207...47F 3 0 Chemical abundance behavior of type I planetary nebulae. FAUNDEZ-ABANS M. and JIMENEZ O.J.L.
1993IAUS..155..147H 32 15 The neutral envelopes of planetary nebulae: molecules and H I. HUGGINS P.J.
1994A&A...282..199R 75 75 The carbon abundance problem in planetary nebulae. ROLA C. and STASINSKA G.
1994A&A...288..897T 147 16 Confrontation of theoretical tracks for post-AGB stars with observations of planetary nebulae. TYLENDA R. and STASINSKA G.
1994A&AS..104..169P viz 77 17 A near infrared survey of northern planetary nebulae. PHILLIPS J.P. and CUESTA L.
1994A&AS..106..559T viz 768 24 A catalogue HeII 4686 line intensities in Galactic planetary nebulae. TYLENDA R., STASINSKA G., ACKER A., et al.
1994A&AS..108..485V viz 434 71 On an alternative statistical distance scale for planetary nebulae. Catalog with statistical distances to planetary nebulae. VAN DE STEENE G.C. and ZIJLSTRA A.A.
1994ApJ...423..882K 1 5 20 N III intercombination lines in the IUE spectra of gaseous nebulae. KEENAN F.P., DUFTON P.L., FEIBELMAN W.A., et al.
1994ApJ...432..427A 32 21 Abundances, planetary nebulae and stellar evolution. ALLER L.H.
1994ApJS...93..465H 113 T K                 2 60 The spectrum of the variable planetary nebula
IC 4997. 		HYUNG S., ALLER L.H. and FEIBELMAN W.A.
1994MNRAS.269..975H 2 5 51 The spectrum of the planetary nebula NGC 6572. HYUNG S., ALLER L.H. and FEIBELMAN W.A.
1994PASP..106..500G 24 11 On the expansion velocities of planetary nebulae and the circumstellar envelopes of AGB stars. GUSSIE G.T. and TAYLOR A.R.
1994PASP..106..745H viz 3 3 36 The spectrum of the planetary nebula IC 418. HYUNG S., ALLER L.H. and FEIBELMAN W.A.
1994Ap&SS.219..231M 200 36 Abundances and radial gradients from disk planetary nebulae : HE, N, C and CL. MACIEL W.J. and CHIAPPINI C.
1994PAZh...20..122A 7 ~ The study of photometric variability of seven planetary nebulae in 1989-1993. ARKHIPOVA V.P., KOSTYAKOVA E.B. and NOSKOVA R.I.
1994BaltA...3..112N 59 4 Element abundances in planetary nebulae from recombination line spectra. NIKITIN A.A., KHOLTYGIN A.F., SAPAR A., et al.
1995A&AS..114..269D viz 14       D               1 20881 157 Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue. DUFLOT M., FIGON P. and MEYSSONNIER N.
1995ApJ...438..500K 7 19 N IV emission lines in the ultraviolet spectra of gaseous nebulae. KEENAN F.P., RAMSBOTTOM C.A., BELL K.L., et al.
1995ApJ...447..262D 21 34 A survey of planetary nebulae at Na D : evidence for neutral envelopes. DINERSTEIN H.L., SNEDEN C. and UGLUM J.
1995ApJS...98..659Z viz 644 200 A statistical distance scale for galactic planetary nebulae. ZHANG C.Y.
1995MNRAS.273..801G 27 15 H I and CO observations of the circumnebular envelopes of planetary nebulae. GUSSIE G.T. and TAYLOR A.R.
1995MNRAS.276.1101A 1 6 27 The nebular spectrum of BD +30 3639, 0.36-1.05 mu.m. ALLER L.H. and HYUNG S.
1995PASP..107..148K 8 9 Forbidden lines of [O I] in the high-resolution optical spectra of planetary nebulae. KEENAN F.P., ALLER L.H., HYUNG S., et al.
1995PASP..107..462G 11 30 A diagnostic diagram for planetary nebulae and symbiotic stars. GUTIERREZ-MORENO A., MORENO H. and CORTES G.
1996A&AS..116..395F 233 3 Classification of planetary nebulae by cluster analysis and artificial neural networks. FAUNDEZ-ABANS M., ORMENO M.I. and DE OLIVEIRA-ABANS M.
1996A&AS..118..243V 23 14 Optical observations of planetary nebula candidates from the northern hemisphere. VAN DE STEENE G.C., JACOBY G.H. and POTTASCH S.R.
1996A&AS..120..111V 3 7 Optical observations of southern planetary nebula candidates. VAN DE STEENE G.C., SAHU K.C. and POTTASCH S.R.
1996ApJ...461L.111M 108 T K                 3 15 The double-shell structure of the variable young planetary nebula
IC 4997. 		MIRANDA L.F., TORRELLES J.M. and EIROA C.
1996ApJ...462..777K 107 180 H2 Emission from planetary nebulae: signpost of bipolar structure. KASTNER J.H., WEINTRAUB D.A., GATELY I., et al.
1996ApJ...470.1118S 2 5 34 Hydrogen masers. I. Theory and prospects. STRELNITSKI V.S., PONOMAREV V.O. and SMITH H.A.
1996MNRAS.278..551H 4 3 42 The optical spectrum of the young planetary nebula Hubble 12. HYUNG S. and ALLER L.H.
1996MNRAS.278..683S 10 4 120 Theoretical He I line intensities in low-density plasmas. SMITS D.P.
1996MNRAS.279.1137K 37 7 The Bowen fluorescence lines : overview and re-analysis of the observations. KASTNER S.O. and BHATIA A.K.
1996MNRAS.280..924R 26 22 An investigation of the 3-micro-m emission bands in planetary nebulae. ROCHE P.F., LUCAS P.W., HOARE M.G., et al.
1996MNRAS.281.1073K 1 17 78 Auroral and nebular emission lines of [S II] in the optical spectra of planetary nebulae. KEENAN F.P., ALLER L.H., BELL K.L., et al.
1996MNRAS.282..723K 71 T                   5 5 Theoretical He I line intensities in gaseous nebulae : NGC 1976, 6572 and IC 4997. KINGDON J.B. and FERLAND G.J.
1996PASP..108..488A 2 3 25 The spectrum of the planetary nebula NGC 6790. ALLER L.H., HYUNG S. and FEIBELMAN W.A.
1996Ap&SS.238...17P 14 8 Properties of planetary nebulae with WR central stars. POTTASCH S.R.
1996IrAJ...23..157M 16 0 New line identifications in the optical spectrum of the slow nova RR Telescopii. McKENNA F.C., KEENAN F.P., HAMBLY N.C., et al.
1997A&A...327..736S viz 49 44 On the mass distribution of planetary nebulae central stars. STASINSKA G., GORNY S.K. and TYLENDA R.
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