J/AZh/75/586 Abundances in solar atmosphere (Boyarchuk+, 1998)
Studies of the Sun as a standard for analysis of stellar atmospheric abundances
Boyarchuk A.A., Antipova L.I., Boyarchuk M.E., Savanov I.S.
<Astron. Zh. 75, 586 (1998)>
=1998AZh....75..586B 1998AZh....75..586B
=1998ARep...42..517B 1998ARep...42..517B
ADC_Keywords: Sun ; Spectroscopy ; Abundances
Abstract:
An analysis of the chemical composition of the solar atmosphere
is performed using spectrograms of the daylight sky obtained on the
ZTS telescope (dispersion 3Å/mm, signal-to-noise ration, S/N>100).
The chemical composition derived in the framework of a Holweger-Muller
atmosphere model are in excellent agreement with the generally
accepted values. Analysis based on the models of Bell et al.
(1976A&AS...23...37B 1976A&AS...23...37B) and Kurucz (1992RMxAA..23..181K 1992RMxAA..23..181K) with Teff=5770K
and logg=4.44 failed to give satisfactory results.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 51 225 Elemental abundances in the solar atmosphere
table1b.dat 42 25 Chemical composition derived in the framework of
Holweger-Muller, Bell et al. and Kurucz
atmosphere models with Teff=5770K and logg=4.44
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See also:
J/AZh/72/864 : Abundances in gamma Sagittae (Boyarchuk+, 1995)
J/AZh/72/855 : Abundances in eta Piscium (Antipova+, 1995)
J/AZh/73/862 : Atmospheres of six red giants (Boyarchuk+, 1996)
J/AZh/77/96 : Abundances in Hyades red giants (Boyarchuk+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- El Element
7- 13 F7.2 0.1nm Lambda Wavelength expressed in angstroem
16- 19 F4.2 eV ExcPot Excitation potentials of the lower level
22- 26 F5.2 --- loggf Oscillator strength (log gf)
29- 33 F5.3 0.1nm EW Equivalent width
36- 39 F4.2 --- logeHM Elemental abundance by HOLMU model (H=12)
42- 45 F4.2 --- logeB Elemental abundance by Bell et al. model (H=12)
48- 51 F4.2 --- logeK Elemental abundance by Kurucz model (H=12)
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Byte-by-byte Description of file: table1b.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- El Element
6- 9 F4.2 --- logeHM Mean elemental abundance by HOLMU model (1)
11- 14 F4.2 --- e_logeHM ? rms uncertainty on logeHM
17- 20 F4.2 --- logeB Mean elemental abundance by Bell et al. (1)
22- 25 F4.2 --- e_logeB ? rms uncertainty on logeB
28- 31 F4.2 --- logeK Mean elemental abundance by Kurucz (1)
33- 36 F4.2 --- e_logeK ? rms uncertainty on logeK
39- 42 F4.2 --- logeS Mean elemental abundance by Anders & Grevesse (1)
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Note (1): References:
HOLMU model: Holweger & Mueller, 1974, Solar Phys. 39, 19
Bell et al. model: 1976A&AS...23...37B 1976A&AS...23...37B
Kurucz model: 1992RMxAA..23..181K 1992RMxAA..23..181K
Anders & Grevesse model : 1989, Cosmochim. Acta 52, 197
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(End) Veta Avedisova [INASAN] 03-Jun-2001