|
other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
| Query : 1998ApJ...508..370F |
1998ApJ...508..370F - Astrophys. J., 508, 370-379 (1998/November-3)
Far-ultraviolet continuum of G-type stars: a signature of the temperature minimum region.
FRANCHINI M., MOROSSI C. and MALAGNINI M.L.
Abstract (from CDS):
The main results of a program of systematic comparison between observed and computed UV spectral energy distributions of field G-type stars are illustrated. We constructed the UV observed energy distributions for 53 G stars, starting from the IUE Uniform Low Dispersion Archive (ULDA) and computed the corresponding theoretical fluxes by using the atmospheric parameters from the Catalogue of [Fe/H] Determinations (1996 edition) and a Kurucz grid of model fluxes. From the comparison between observations and classical models, a UV excess shortward of 2000 Å is evident for all the program stars. The UV continuum in the region 1600-2000 Å can be described by synthetic fluxes computed from semiempirical models based on the temperature minimum concept. Values for the Tmin/Teff ratio on the order of 0.80 are suitable for the interpretation of the observed fluxes. The residual discrepancies shortward of 1600 Å are suggested to be effects of the chromosphere, on the basis of a comparison with the Maltby et al. semiempirical model of the Sun.
Abstract Copyright: ∼
Journal keyword(s): Stars: Atmospheres - Stars: Chromospheres - Stars: Late-Type - Ultraviolet: Stars
Simbad objects: 54
| Number of rows : 54 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * bet Hyi | PM* | 00 25 45.07036 | -77 15 15.2860 | 3.52 | 3.41 | 2.79 | 2.28 | 1.94 | G0V | 597 | 0 |
| 2 | * mu. Cas | SB* | 01 08 16.3029454473 | +54 55 12.561201263 | 5.93 | 5.86 | 5.17 | 4.55 | 4.13 | G5Vb | 575 | 1 |
| 3 | * eta Psc | ** | 01 31 29.0081880156 | +15 20 44.994632991 | 5.320 | 4.600 | 3.620 | 2.90 | 2.40 | G7IIIa | 248 | 0 |
| 4 | * tau Cet | PM* | 01 44 04.0831371922 | -15 56 14.927607677 | 4.43 | 4.22 | 3.50 | 2.88 | 2.41 | G8V | 1261 | 1 |
| 5 | * 64 Cet | PM* | 02 11 21.0787585632 | +08 34 11.305868808 | 6.189 | 5.623 | 6.81 | G0IV | 121 | 0 | ||
| 6 | * zet01 Ret | PM* | 03 17 46.1634549490 | -62 34 31.152456644 | 6.24 | 6.18 | 5.54 | 5.00 | 4.66 | G2.5VHdel1 | 298 | 0 |
| 7 | * zet02 Ret | ** | 03 18 12.8188824117 | -62 30 22.904711032 | 5.814 | 5.228 | G1V | 366 | 0 | |||
| 8 | * kap01 Cet | BY* | 03 19 21.6964175772 | +03 22 12.714979884 | 5.71 | 5.52 | 4.85 | 4.27 | 3.91 | G5V | 894 | 0 |
| 9 | * e Eri | PM* | 03 19 55.6509122226 | -43 04 11.215188426 | 5.20 | 4.98 | 4.27 | 3.65 | 3.25 | G6V | 455 | 1 |
| 10 | * eps Tau | ** | 04 28 37.0002551195 | +19 10 49.563140930 | 5.42 | 4.54 | 3.53 | G9.5IIICN0.5 | 596 | 1 | ||
| 11 | * 58 Eri | BY* | 04 47 36.2917029384 | -16 56 04.040472552 | 6.14 | 5.50 | G2.5IV-V | 430 | 0 | |||
| 12 | * bet Cam | * | 05 03 25.0910670105 | +60 26 32.083933247 | 5.57 | 4.95 | 4.02 | 3.33 | 2.86 | G1Ib | 180 | 0 |
| 13 | * lam Aur | PM* | 05 19 08.4754499121 | +40 05 56.585080940 | 5.46 | 5.33 | 4.71 | 4.18 | 3.86 | G1.5IV-VFe-1 | 535 | 0 |
| 14 | * bet Lep | PM* | 05 28 14.7228880318 | -20 45 33.997988694 | 4.13 | 3.66 | 2.84 | 2.19 | 1.75 | G5II-IIIa: | 241 | 0 |
| 15 | * chi01 Ori | RS* | 05 54 22.9829893 | +20 16 34.222038 | 5.08 | 5.00 | 4.40 | 3.90 | 3.59 | G0V | 856 | 0 |
| 16 | HD 44594 | ** | 06 20 06.13530 | -48 44 27.9344 | 7.46 | 7.26 | 6.60 | G2Va | 172 | 0 | ||
| 17 | * zet Gem | cC* | 07 04 06.5312384690 | +20 34 13.074474962 | 5.20 | 4.58 | 3.79 | 3.082 | G1Ib | 571 | 0 | |
| 18 | * 12 Pup | Pe* | 07 59 05.7150298248 | -23 18 37.427521392 | 7.15 | 6.23 | 5.11 | G9IIa | 87 | 0 | ||
| 19 | * pi.01 UMa | BY* | 08 39 11.7046112880 | +65 01 15.263122512 | 6.33 | 6.26 | 5.64 | 5.12 | 4.79 | G0.5V | 569 | 0 |
| 20 | * d Vel | * | 08 44 23.9470741416 | -42 38 57.398847432 | 4.917 | 4.046 | G6III | 81 | 0 | |||
| 21 | HD 77912 | Pe* | 09 06 31.7678430456 | +38 27 07.970169096 | 5.567 | 4.539 | G7IIa | 162 | 0 | |||
| 22 | * 10 LMi | RS* | 09 34 13.3818448296 | +36 23 51.209023344 | 5.47 | 4.60 | G7.5IIIb | 151 | 0 | |||
| 23 | * d UMa | RS* | 09 34 28.8594727848 | +69 49 49.226541888 | 5.67 | 5.34 | 4.57 | 3.91 | 3.50 | G5III-IV | 301 | 0 |
| 24 | * 15 LMi | PM* | 09 48 35.3713484808 | +46 01 15.626615412 | 5.80 | 5.72 | 5.10 | 4.57 | 4.23 | G0.5Va | 314 | 0 |
| 25 | * ups01 Hya | * | 09 51 28.6749789221 | -14 50 47.863368049 | 5.68 | 5.03 | 4.11 | 3.42 | 2.95 | G7III | 159 | 0 |
| 26 | * 47 UMa | PM* | 10 59 27.9727514012 | +40 25 48.920572724 | 5.66 | 4.7 | G1-VFe-0.5 | 776 | 1 | |||
| 27 | * 61 UMa | PM* | 11 41 03.0162706212 | +34 12 05.881605449 | 6.31 | 6.08 | 5.34 | 4.73 | 4.38 | G8V | 615 | 0 |
| 28 | HD 102365 | PM* | 11 46 31.0725331317 | -40 30 01.285867174 | 5.65 | 5.55 | 4.88 | 4.35 | 3.97 | G2V | 337 | 1 |
| 29 | * bet CVn | ** | 12 33 44.5442516547 | +41 21 26.921352859 | 4.91 | 4.86 | 4.25 | 3.73 | 3.42 | G0V | 583 | 0 |
| 30 | * bet Crv | PM* | 12 34 23.2349224335 | -23 23 48.336778328 | 4.17 | 3.52 | 2.64 | 2.03 | 1.59 | G5IIBa0.3 | 259 | 0 |
| 31 | * e Vir | PM* | 13 16 46.5148594512 | +09 25 26.960139646 | 5.81 | 4.8 | G0V | 554 | 1 | |||
| 32 | * gam Hya | SB* | 13 18 55.2976891983 | -23 10 17.450424894 | 4.58 | 3.92 | 3.00 | 2.40 | 1.93 | G8IIIa | 180 | 0 |
| 33 | * eta Boo | SB* | 13 54 41.07892 | +18 23 51.7946 | 3.440 | 3.250 | 2.680 | 2.24 | 1.95 | G0IV | 708 | 0 |
| 34 | * ksi Boo | BY* | 14 51 23.37993 | +19 06 01.6994 | 5.618 | 5.370 | 4.593 | 3.91 | 3.48 | G7Ve+K5Ve | 478 | 0 |
| 35 | HD 131117 | PM* | 14 52 33.1012211690 | -30 34 38.121763140 | 6.89 | 6.29 | G0/1V | 117 | 0 | |||
| 36 | * del Boo | PM* | 15 15 30.1628200572 | +33 18 53.392471806 | 5.12 | 4.44 | 3.49 | 2.76 | 2.25 | G8IIIFe-1 | 380 | 0 |
| 37 | * del CrB | RS* | 15 49 35.6469970632 | +26 04 06.214310112 | 5.80 | 5.43 | 4.63 | 4.00 | 3.58 | G5III-IVFe-1 | 205 | 0 |
| 38 | * ome02 Sco | PM* | 16 07 24.3270139738 | -20 52 07.551954425 | 5.68 | 5.17 | 4.33 | 3.68 | 3.25 | G4II-III | 126 | 0 |
| 39 | * eta Dra | PM* | 16 23 59.4863284800 | +61 30 51.155139060 | 4.35 | 3.65 | 2.74 | 2.12 | 1.66 | G8-IIIab | 300 | 0 |
| 40 | * gam Aps | PM* | 16 33 27.0825153352 | -78 53 49.733407072 | 4.783 | 3.854 | G8III | 95 | 0 | |||
| 41 | * mu.01 Her | ** | 17 46 27.5472960785 | +27 43 14.560978925 | 4.56 | 4.17 | 3.42 | 2.89 | 2.51 | G5IV | 695 | 0 |
| 42 | * ksi Her | LP* | 17 57 45.8856741278 | +29 14 52.366005079 | 5.34 | 4.64 | 3.70 | 3.01 | 2.55 | G8.5III | 241 | 0 |
| 43 | HD 166208 | SB* | 18 07 28.7442485448 | +43 27 42.802503948 | 5.915 | 4.997 | G8IIICN-1CH-3 | 155 | 0 | |||
| 44 | * del Dra | PM* | 19 12 33.3013729052 | +67 39 41.539165396 | 4.85 | 4.07 | 3.07 | 2.37 | 1.86 | G9III | 283 | 0 |
| 45 | * b Aql | PM* | 19 24 58.1999714302 | +11 56 39.888480530 | 6.35 | 5.93 | 4.7 | G7IVHdel1 | 492 | 0 | ||
| 46 | * alf Sge | * | 19 40 05.7913315848 | +18 00 50.006621484 | 5.59 | 5.16 | 4.38 | 3.79 | 3.40 | G1II | 207 | 0 |
| 47 | * bet Sge | * | 19 41 02.9389551192 | +17 28 33.752680392 | 6.33 | 5.43 | 4.38 | 3.66 | 3.16 | G8IIIaCN0.5 | 163 | 0 |
| 48 | * 16 Cyg B | PM* | 19 41 51.9726777456 | +50 31 03.089030916 | 7.07 | 6.86 | 6.20 | 5.76 | 5.42 | G3V | 896 | 1 |
| 49 | * bet Aql | PM* | 19 55 18.7928429719 | +06 24 24.351242346 | 5.040 | 4.560 | 3.710 | 3.05 | 2.56 | G8IV | 556 | 0 |
| 50 | * del Pav | PM* | 20 08 43.6088716052 | -66 10 55.442769229 | 4.78 | 4.32 | 3.56 | 2.95 | 2.61 | G8IV | 394 | 0 |
| 51 | * kap Del | PM* | 20 39 07.7867477765 | +10 05 10.291671448 | 5.77 | 4.6 | G2IV | 198 | 0 | |||
| 52 | * iot Cap | BY* | 21 22 14.7959829093 | -16 50 04.358014058 | 5.74 | 5.18 | 4.27 | 3.65 | 3.17 | G7IIIFe-1.5 | 196 | 0 |
| 53 | * mu. Peg | PM* | 22 50 00.1930748087 | +24 36 05.692620534 | 5.10 | 4.42 | 3.48 | 2.80 | 2.33 | G8+III | 297 | 0 |
| 54 | * 104 Aqr | * | 23 41 45.8063762520 | -17 48 59.515007076 | 6.14 | 5.65 | 4.83 | 4.22 | 3.80 | G2Ib/II | 107 | 0 |
To bookmark this query, right click on this link: simbad:objects in 1998ApJ...508..370F and select 'bookmark this link' or equivalent in the popup menu