2018A&A...620A..98H

Query : 2018A&A...620A..98H

2018A&A...620A..98H - Astronomy and Astrophysics, volume 620A, 98-98 (2018/12-1)

Hot bubbles of planetary nebulae with hydrogen-deficient winds. II. Analytical approximations with application to BD + 30°3639.

HELLER R., JACOB R., SCHONBERNER D. and STEFFEN M.

Abstract (from CDS):


Context. The first high-resolution X-ray spectroscopy of a planetary nebula, BD +30° 3639, opened the possibility to study plasma conditions and chemical compositions of X-ray emitting "hot" bubbles of planetary nebulae in much greater detail than before.
Aims. We investigate (i) how diagnostic line ratios are influenced by the bubble's thermal structure and chemical profile, (ii) whether the chemical composition inside the bubble of BD +30° 3639 is consistent with the hydrogen-poor composition of the stellar photosphere and wind, and (iii) whether hydrogen-rich nebular matter has already been added to the bubble of BD +30° 3639 by evaporation.
Methods. We applied an analytical, one-dimensional (1D) model for wind-blown bubbles with temperature and density profiles based on self-similar solutions including thermal conduction. We also constructed heat-conduction bubbles with a chemical stratification. The X-ray emission was computed using the well-documented CHIANTI code. These bubble models are used to re-analyse the high-resolution X-ray spectrum from the hot bubble of BD +30° 3639.
Results. We found that our 1D heat-conducting bubble models reproduce the observed line ratios much better than plasmas with single electron temperatures. In particular, all the temperature- and abundance-sensitive line ratios are consistent with BD +30° 3639 X-ray observations for (i) an intervening column density of neutral hydrogen, NH=0.20–0.10+0.05x1022cm–2, (ii) a characteristic bubble X-ray temperature of TX=1.8±0.1MK together with (iii) a very high neon mass fraction of about 0.05, virtually as high as that of oxygen. For lower values of NH, we cannot exclude the possibility that the hot bubble of BD +30° 3639 contains a small amount of "evaporated" (or mixed) hydrogen-rich nebular matter. Given the possible range of NH, the fraction of evaporated hydrogen-rich matter cannot exceed 3% of the bubble mass.
Conclusions. The diffuse X-ray emission from BD +30° 3639 can be well explained by models of wind-blown bubbles with thermal conduction and a chemical composition equal to that of the hydrogen-poor and carbon-, oxygen-, and neon-rich stellar surface.

Abstract Copyright: © ESO 2018

Journal keyword(s): conduction - planetary nebulae: general - planetary nebulae: individual: BD +30 3639 - stars: abundances - X-rays: stars

Simbad objects: 1

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Number of rows : 1
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 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 952 0

Query : 2018A&A...620A..98H

Basic data :
HD 184738 -- Planetary Nebula
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		* (AG,ALS,...), PN (2013MNRAS,Hen,...), Rad (BWE,87GB,...), EB* (2003AstL), Em* (HBHA,[KW97]), V* (V*,AAVSO), IR (IRAS,RAFGL), AB? (1991A&AS), X (1RXS), NIR (2MASS), MIR (WISE)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		19 34 45.2337620448 +30 30 58.950651240 (Optical) [ 0.0233 0.0251 90 ] A 2020yCat.1350....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		19 32 47.5112644673 +30 24 20.681936983 [ 0.0233 0.0251 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		064.7854153707626 +05.0194092189822 [ 0.0233 0.0251 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		-2.251 -8.807 [0.028 0.028 90] A 2020yCat.1350....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) -232.093994 [0.002894] / z(spectroscopic) -0.000774 [0.000000] / cz -232.00 [0.00]
   (NIR) A 2020AJ....160..120J
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		0.6184 [0.0324] A 2020yCat.1350....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		[WC9] C 2003A&A...403..659A
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		0.10980750 0.10896717 84 (Rad) C 2021MNRAS.503.2887B
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (6) :
B 10.41 [0.03] D 2000A&A...355L..27H
V 10.44 [0.04] D 2000A&A...355L..27H
G 10.336974 [0.003219] C 2020yCat.1350....0G
J 9.306 [0.034] C 2003yCat.2246....0C
H 9.231 [0.038] C 2003yCat.2246....0C
K 8.108 [0.027] C 2003yCat.2246....0C
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME Campbell's star HD 184738 PLX 4591.00 WB 1932+3024
AG+30 1906 Hen 2-438 PN G064.7+05.0 WEB 16884
ALS 10344 HIC 96295 PN ARO 11 WISE J193445.24+303058.9
AP J19344524+3030590 HIP 96295 PN VV' 503 [KW97] 38-16
BD+30 3639 IRAS 19327+3024 PN VV 235 [LFO93] 1932+30
BWE 1932+3024 LF 2 +30 158 PN V-V 503 AAVSO 1930+30B
DO 17895 LS II +30 4 PPM 83157 Gaia DR3 2032744769234150016
87GB 193247.8+302410 2MASS J19344524+3030590 RAFGL 4251 Gaia DR1 2032744867997691008
GCRV 11983 NAME Campbell's Hydrogen Star 1RXS J193445.6+303100 Gaia DR2 2032744769234150016
GSC2 N03010221221 NVSS J193445+303058 TIC 41003672
GSC 02655-04032 PK 064+05 1 TYC 2655-4032-1
HBHA 3202-11 PLX 4591 V* V1966 Cyg

References (952 between 1850 and 2024) (Total 952)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 6    V* : 1    distance : 3    PLX : 5    PM : 5    MK : 15   

   

Observing logs


herschel : 4    ISO : 13    IUE : 18   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : HD 184738

Link by name to the catalogue in VizieR :

AG+30 1906 ALS 10344 AP J19344524+3030590 BD+30 3639 BWE 1932+3024
DO 17895 GSC 02655-04032 HD 184738 HIC 96295 HIP 96295
IRAS 19327+3024 LF 2 +30 158 LS II +30 4 2MASS J19344524+3030590 NVSS J193445+303058
PLX 4591 PN G064.7+05.0 PPM 83157 RAFGL 4251 1RXS J193445.6+303100
TYC 2655-4032-1 V* V1966 Cyg WISE J193445.24+303058.9 Gaia DR3 2032744769234150016 Gaia DR1 2032744867997691008
Gaia DR2 2032744769234150016

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