J/AZh/78/1104 Age and metallicity in eclipsing binaries (Kovaleva, 2001)
Age and metallicity estimates of intermediate mass stars in eclipsing binaries.
Kovaleva D.A.
<Astron. Zh. 78, 1104 (2001)>
=2001AZh....78.1104K 2001AZh....78.1104K
=2001ARep...45..972K 2001ARep...45..972K
ADC_Keywords: Binaries, eclipsing ; Stars, ages ; Abundances
Abstract:
Based on the set of high accuracy observational data on the components
of SB2 eclipsing binaries and the grid of stellar models calculated by
Geneva group for the wide range of masses and abundances, we estimate
most probable ages and metallicities for the 43 systems using
constraints arising from common origin of the components.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 35 43 Coordinates for stars
table.dat 175 43 Observational (bibliographic) spectra, masses,
radii, effective temperatures, luminosities, and
calculated ages and metallicities for the 43 SB2
eclipsing systems
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See also:
J/AZh/79/259 : Models for Intermediate-Mass Eclipsing Binaries (Kovaleva, 2002)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Name of the star system
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 22 F5.2 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 35 F5.2 arcsec DEs Declination (J2000)
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Name of the star system
11- 22 A12 --- Ident HD/BD/other identifications
23- 28 A6 --- Sp1 Spectrum of the primary star
29- 35 A7 --- Sp2 Spectrum of the secondary star
36- 40 F5.3 solMass M1 Mass of the primary in solar units
42- 46 F5.3 solMass e_M1 Uncertainty in M1
49- 53 F5.3 solMass M2 Mass of the secondary in solar units
55- 59 F5.3 solMass e_M2 Uncertainty in M2
62- 66 F5.3 solRad R1 Radius of the primary in solar units
68- 72 F5.3 solRad e_R1 Uncertainty in R1
75- 79 F5.3 solRad R2 Radius of the secondary in solar units
81- 85 F5.3 solRad e_R2 Uncertainty in R2
88- 92 F5.3 [K] logTeff1 Log(Teff) of the primary
94- 98 F5.3 [K] e_logTeff1 Uncertainty in logTeff1
101-105 F5.3 [K] logTeff2 Log(Teff) of the secondary
107-111 F5.3 [K] e_logTeff2 Uncertainty in logTeff2
114-118 F5.2 [solLum] logL1 LogL of the primary in solar units
121-124 F4.2 [solLum] e_logL1 Uncertainty in logL1
127-132 F6.3 [solLum] logL2 LogL of the secondary in solar units
134-137 F4.2 [solLum] e_logL2 Uncertainty in logL2
140-144 F5.2 [Sun] [Fe/H] Metallicity of the binary in [Fe/H]
147-150 F4.2 [Sun] e_[Fe/H] Uncertainty in [Fe/H]
154-157 F4.2 [yr] logAge Age of the binary in log(yrs)
160-163 F4.2 [yr] e_logAge Uncertainty in logAge
167-171 F5.3 --- Devi Dimensionless characteristics (1)
174-175 I2 --- Refs [1-10] Reference for masses, radii,
temperatures and luminosities (2)
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Note (1): Dimensionless characteristics of age and metallicity
estimates quality.
Devi > 3 correspond to least reliable estimates
Note (2): References:
1: Malkov, 1993BICDS..42...27M 1993BICDS..42...27M
2: Degirmengi, 1997Ap&SS.253..237D 1997Ap&SS.253..237D
3: Barembaum & Etzel, 1995AJ...109.2680B
4: Nordstrom & Johansen, 1994A&A..282..787N
5: Gimenez & Quintana, 1992A&A..260..227G
6: Clausen, 1991A&A..246..397C
7: Latham et al., 1996A&A..314..864L
8: Holmgren et al., 1991A&A..248..129H
9: Popper, 1997AJ...114.1195P
10: Gimenez et al., 1994A&A...291..795G 1994A&A...291..795G
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(End) Dana Kovaleva, Veta Avedisova [INASAN] 18-Jul-2002