J/A+A/363/1051 Properties of He-rich stars. III. (Zboril, 2000)
Properties of He-rich stars. III. Model atmospheres and diagnostic tools.
Zboril M.
<Astron. Astrophys. 363, 1051 (2000)>
=2000A&A...363.1051Z 2000A&A...363.1051Z
ADC_Keywords: Models, atmosphere ; Abundances ; Stars, peculiar
Keywords: stars - abundances: atmospheres ; chemically peculiar
Abstract:
We present a study of helium rich atmospheres in the interval He/H
0.1-1.0 as derived from fully consistent model computations for
effective temperature (from 15000K up to 32000K) and surface gravity
(log(g)=3.5 and 4.0).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 91 24 *Atmospheric parameters and evolutionary state
for He-rich stars obtained using Kurucz models.
colors.dat 118 120 Synthetic colors in Johnson, Stroemgren
and Geneva photometric systems.
table1.tex 77 63 LaTeX version of table1
profiles.dat 40 2160 Summary of line profiles stored as individual
files in subdirectories he0, he1, and hgamma
he0/* . 1560 He I line profiles
he1/* . 480 He II line profiles
hgamma/* . 120 1-D hydrogen γ line profiles
models.dat 23 180 List of models in "models" subdirectory
models/* . 180 Model atmospheres for He-rich stars subdirectory
mod.f 65 54 Fortran program for model quantities extraction,
e.g. Teff vs. pressure diagram,
for files in "models" subdirectory
farb.f 62 97 Fortran program for color extraction
farby 55 321 Theoretical colors (input file for farb.f)
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Note on table1.dat: The quantities labelled "new" have been obtained
assuming corrected the photometric Teff , while the others have been
obtained only from the Balmer line profiles.
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See also:
VI/39 : Model Atmospheres (Kurucz, 1979)
J/A+A/324/949 : Properties of He-rich stars I. (Zboril+ 1997)
Byte-by-byte Description of files: he0/* he1/* hgamma/*
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Bytes Format Units Label Explanations
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3- 10 F8.3 0.1nm Lambda Wavelength
15- 25 E11.5 10-2W/m2/nm Flux Flux at stellar surface
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Star identification HD/BD
14- 18 I5 [K] Teff ? Effective temperature
20- 22 F3.1 [cm/s+2] logg ? Decadic logarithm of surface gravity
24- 27 F4.2 [cm/s+2] e_logg ? rms uncertainty on logg
29- 33 I5 [K] Teff:new ? Effective temperature with correction
35- 38 F4.2 [cm/s+2] logg:new ? Decadic logarithm of surface gravity
with correction
40- 43 F4.2 [cm/s+2] e_logg:new ? rms uncertainty on loggc
45- 48 F4.2 --- R*/Rzams ? Stellar radius vs. ZAMS stellar radius
ratio
50- 53 F4.2 --- e_R*/Rzams ? rms uncertainty on R*/Rzams
55 A1 --- l_He/H [~<] Limit flag on He/H
56- 59 F4.2 --- He/H ? Helium abundance (n(H)=1.0)
61- 64 F4.2 --- e_He/H ? rms uncertainty on He/H
65 A1 --- u_He/H [?] Uncertainty flag on He/H
67- 70 F4.2 --- R*/Rz:new ? Stellar radius vs. ZAMS stellar radius
ratio with correction
72- 75 F4.2 --- e_R*/Rz:new ? rms uncertainty on R*/Rzamsc
77 A1 --- l_He/H:new Limit flag on He/Hc
78- 81 F4.2 --- He/H:new ? Helium abundance with correction
83- 86 F4.2 --- e_He/H:new ? rms uncertainty on He/Hc
88- 91 A4 --- Note Emission indication (1)
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Note (1): 'e' in Geneva photometric indexes; 'e(H)' in hydrogen γ profile
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Byte-by-byte Description of file: colors.dat
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Bytes Format Units Label Explanations
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1- 5 I5 K Teff Effective temperature
7- 9 F3.1 [cm/s2] logg [3.5,4] Gravity
11- 13 F3.1 --- He/H He abundance
15- 20 F6.3 mag U-B Johnson color index
22- 27 F6.3 mag B-V Johnson color index
29- 34 F6.3 mag V-R Johnson color index
36- 41 F6.3 mag R-I Johnson color index
43- 48 F6.3 mag u-v Stroemgren color index
50- 55 F6.3 mag v-b Stroemgren color index
57- 62 F6.3 mag b-y Stroemgren color index
64- 69 F6.3 mag c1 Stroemgren color index (u-v) - (v-b)
71- 76 F6.3 mag m1 Stroemgren color index (v-b) - (b-y)
78- 83 F6.3 mag (U-B)g Geneva color index
85- 90 F6.3 mag (B-V)g Geneva color index
92- 97 F6.3 mag V-B1 Geneva color index
99-104 F6.3 mag B1-B2 Geneva color index
106-111 F6.3 mag B2-V1 Geneva color index
113-118 F6.3 mag V1-G Geneva color index
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Byte-by-byte Description of file: profiles.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- FileName Filename (subdir/name)
18- 27 A10 --- Element Line and Element designation (1)
29- 32 I4 K Teff Effective temperature
34- 36 F3.1 [cm/s2] logg Gravity surface
38- 40 F3.1 --- He/H Helium abundance (n(H)=1)
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Note (1): He I lambda, He II lambda, Hgamma
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Byte-by-byte Description of file: models.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- FileName Model file name, in "models" subdirectory
10- 14 I5 K Teff Effective temperature
16- 18 F3.1 [cm/s2] logg [3.5,4] Gravity
20- 22 F3.1 --- He/H He abundance
23 A1 --- Flag [x] indicates a model with HeII photoionisation
taken into account (basically for the hottest
models)
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Acknowledgements: Milan ZBORIL
History:
The file "farby" was expanded into the table "colors.dat"
References:
Zboril et al., Paper I 1997A&A...324..949Z 1997A&A...324..949Z = Cat. J/A+A/324/949
Zboril & North, Paper II 1999A&A...345..244Z 1999A&A...345..244Z
(End) Patricia Bauer [CDS] 29-Sep-2000