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J/A+A/379/162       Binaries with post-T Tauri secondaries     (Gerbaldi+, 2001)

Binary systems with post-T Tauri secondaries Gerbaldi M., Faraggiana R., Balin N. <Astron. Astrophys. 379, 162 (2001)> =2001A&A...379..162G
ADC_Keywords: Stars, pre-main sequence ; Stars, early-type ; Stars, ages ; Stars, masses ; Effective temperatures ; Photometry, uvby, beta Keywords: binaries: visual - stars: evolution - stars: fundamental parameters (temperature, luminosity, age, mass) - Hertzsprung-Russel (HR) diagram - stars: pre-main sequence Description: File table2 contains the values of the color indices: (b-y), m1, c1, Hβ, from the Stroemgren photometry and the observational errors on these indices as given by the Hauck and Mermiliod (1998, Cat. II/215). The values of Teff and logg are obtained from the Moon & Dworetsky (1985MNRAS.217..305M) calibration to which we have implemented the corrections by Castelli (1991A&A...251..106C). The errors on the parameters Teff and logg, as explained in section 3.3, are the consequence of the observational error on the photometric indices; SigmaTeff is the total error, on Teff, computed as explained in section 3.3. File table5 contains the values of the parallax, the error on the parallax, the Teff and the luminosity for the early-type star and late type star of each visual binary system. The errors on the Teff and on the luminosity are taken into account to compute for each of these parameters its minimum and maximum value. File table7 gives the values of the ages and masses computed for the early-type stars from the Schaller et al. (1993, Cat. J/A+AS/96/269) isochrones and Meynet at al. (1993A&AS...98..477M) models and from the Girardi et al. (2000, Cat. J/A+AS/141/371) models. The errors on the Teff and the luminosity are used to compute the minimum and the maximum values for the age and the mass. The last two columns concern only the primary stars with a Teff greater than 15000K for which we also compute the age and the mass using as Teff value: (Teff-500K); 500K corresponds to the systematic shift between Teff derived by using different photometric system (see Sect. 3.3). File table9 gives the values of the ages and masses computed for the late-type components from the isochrones and evolutionary tracks by D'Antona et al. (1998, web page, http://www.mporzio.astro.it/~dantona/ ) Palla and Stahler (1999ApJ...525..772P), Siess et al. (2000A&A...358..593S) and Tout et al. (1999MNRAS.310..360T). When possible, the minimum and the maximum values of these parameters are given by taking into account the errors on the Teff and on the luminosity. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 84 37 Teff and log g for early-type stars and errors table5.dat 118 39 Teff, luminosity and errors for early and late-type stars table7.dat 113 37 Ages, masses and errors for the early-type stars table9.dat 114 39 Ages, masses and errors for the late-type stars
See also: http://www.mporzio.astro.it/~dantona : Francesca D'Antona Home Page J/A+AS/96/269 : Stellar Models from 0.8 to 120M (Schaller+, 1992) J/A+AS/141/371 : Low-mass stars evolutionary tracks+isochrones (Girardi+ 2000) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number 8- 10 A3 --- Comp1 Early-type star component of the HD binary 12- 17 F6.3 mag b-y (b-y) colour index 19- 23 F5.3 mag e_b-y ? Observational error on (b-y) 25- 29 F5.3 mag m1 m1 colour index 31- 35 F5.3 mag e_m1 ? Observational error on m1 37- 42 F6.3 mag c1 c1 colour index 44- 48 F5.3 mag e_c1 ? Observational error on c1 50- 54 F5.3 mag Beta Beta index 56- 60 F5.3 mag e_Beta ? Observational error on Beta 62- 66 I5 K Teff Effective temperature 68- 70 I3 K e_Teff Error on Teff 72- 74 I3 K SigmaTeff Total error on Teff 76- 79 F4.2 [cm/s2] logg Gravity surface 81- 84 F4.2 [cm/s2] e_logg ? Error on logg
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Identification in Hipparcos Catalogue 8- 12 F5.2 mas Plx Parallax in milliarcsec 14- 17 F4.2 mas e_Plx Error on the parallax in milliarcsec 19- 24 I6 --- HD HD number 26- 28 A3 --- Comp1 Early-type star of the HD binary 30- 34 F5.3 [K] log(Teff)1 Early-type star effective temperature 36- 40 F5.3 [K] log(Teff+E)1 Early-type star Teff plus the total error on it 42- 46 F5.3 [K] log(Teff-E)1 Early-type star Teff minus the total error on it 48- 52 F5.3 [K] log(Teff-500) ? Early-type star Teff minus 500K, 54- 58 F5.3 [solLum] log(L)1 Early-type star luminosity 60- 64 F5.3 [solLum] log(L+E)1 Early-type star luminosity plus the total error on it 66- 70 F5.3 [solLum] log(L-E)1 Early-type star luminosity minus the total error on it 72- 77 I6 --- --- HD number (repetition) 79- 80 A2 --- Comp2 Late-type star of the HD binary 81- 85 F5.3 [K] log(Teff)2 ? Late-type star effective temperature 87- 91 F5.3 [K] log(Teff+E)2 ? Late-type star Teff plus the total error on it 93- 97 F5.3 [K] log(Teff-E)2 ? Late-type star Teff minus the total error on it 99-104 F6.3 [solLum] log(L)2 ? Late-type star luminosity 106-111 F6.3 [solLum] log(L+E)2 ? Late-type star luminosity plus the total error on it 113-118 F6.3 [solLum] log(L-E)2 ? Late-type star luminosity minus the total error on it
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number 8- 10 A3 --- Comp1 Early-type star component of the HD binary 12- 18 E7.1 yr Age1 ? Age from Schaller at al. (1993, Cat. J/A+AS/96/269) isochrones 19 A1 --- n_Age1 [-Z] Note on Age1 (1) 21- 27 E7.1 yr Agemin1 ? Age minimum from Schaller et al. (1993, Cat. J/A+AS/96/269) isochrones 28 A1 --- n_Agemin1 [-Z*] Note on Agemin1 (1) 30- 36 E7.1 yr Agemax1 ? Age maximum from Schaller et al. (1993, Cat. J/A+AS/96/269) isochrones 37 A1 --- n_Agemax1 [-*] Note on Agemax1 (1) 39- 42 F4.1 solMass Mass1 ? Mass, from Meynet et al. (1993A&AS...98..477M) evolutionary tracks 43 A1 --- n_Mass1 [-] Note on Mass1 (1) 45- 48 F4.1 solMass Massmin1 ? Mass minimum, from Meynet et al. (1993A&AS...98..477M) evolutionary tracks 49 A1 --- n_Massmin1 [-*] Note on Massmin1 (1) 51- 54 F4.1 solMass Massmax1 ? Mass maximum, from Meynet et al. (1993A&AS...98..477M) evolutionary tracks 55 A1 --- n_Massmax1 [-*] Note on Massmax1 (1) 57- 63 E7.1 yr Age2 ? Age from Girardi et al. (2000, Cat. J/A+AS/141/371) isochrones 64 A1 --- n_Age2 [-Z] Note on Age2 (1) 66- 72 E7.1 yr Agemin2 ? Age minimum from Girardi et al. (2000, Cat. J/A+AS/141/371) isochrones 73 A1 --- n_Agemin2 [-Z*] Note on Agemin2 (1) 75- 81 E7.1 yr Agemax2 ? Age maximum from Girardi et al. (2000, Cat. J/A+AS/141/371) isochrones 82 A1 --- n_Agemax2 [-Z*] Note on Agemax2 (1) 84- 87 F4.1 solMass Mass2 ? Mass, from Girardi et al. (2000, Cat. J/A+AS/141/371) evolutionary tracks 88 A1 --- n_Mass2 [-] Note on Mass2 (1) 90- 93 F4.1 solMass Massmin2 ? Mass minimum, from Girardi et al. (2000, Cat. J/A+AS/141/371) evolutionary tracks 94 A1 --- n_Massmin2 [-*] Note on Massmin2 (1) 96- 99 F4.1 solMass Massmax2 ? Mass maximum, from Girardi et al. (2000, Cat. J/A+AS/141/371) evolutionary tracks 100 A1 --- n_Massmax2 [-*] Note on Massmax2 (1) 102-108 E7.1 yr Age3 ? Age from Schaller et al. (1993, Cat. J/A+AS/96/269) isochrones with a value of the temperature equal. to (Teff - 500K) 110-113 F4.1 solMass Mass3 ? Mass, from Meynet et al. (1993A&AS...98..477M) evolutionary tracks with a value of the temperature equal. to (Teff - 500K)
Note (1): Notes: Z: ZAMS. The label "ZAMS" indicates a star located at the very beginning of an isochrone, so no age can be given. *: No determined value when the age determination is ambiguous when the star position in the HR diagram corresponds to the end of the main sequence phase and so the star is located in a region where evolutionary tracks overlap. -: No determined value when no age or mass could be given due to the position of the star in the HR diagram.
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number 8 A1 --- Comp2 Late-type star component of the HD binary 10- 16 E7.1 yr Age1 ? Age from D'Antona et al. isochrones (1998, http://www.mporzio.astro.it/~dantona/ ) 17 A1 --- n_Age1 [*] *: No data (1) 19 A1 --- l_Agemin1 Limit flag on Agemin1 20- 26 E7.1 yr Agemin1 ? Age minimum from D'Antona et al. isochrones 1998, http://www.mporzio.astro.it/~dantona/ 27 A1 --- n_Agemin1 [*] *: No data (1) 29- 35 E7.1 yr Agemax1 ? Age maximum from D'Antona et al. isochrones 1998, http://www.mporzio.astro.it/~dantona/ 36 A1 --- n_Agemax1 [M*] M: MS, *: No data (1) 38 A1 --- l_Agemax1 Limit flag on Agemax1 39- 45 E7.1 yr Age2 ? Age from Palla and Stahler (1999ApJ...525..772P) isochrones 46 A1 --- n_Age2 [*M] M: MS, *: No data (1) 48 A1 --- l_Agemin2 Limit flag on Agemin2 49- 55 E7.1 yr Agemin2 ? Age minimum from Palla and Stahler (1999ApJ...525..772P) isochrones 56 A1 --- n_Agemin2 [*] *: No data (1) 58- 64 E7.1 yr Agemax2 ? Age maximum from Palla and Stahler (1999ApJ...525..772P) isochrones 65 A1 --- n_Agemax2 [M*] M: MS, *: No data (1) 67- 73 E7.1 yr Age3 ? Age from Siess et al. (2000A&A...358..593S) isochrones 74 A1 --- n_Age3 [*] *: No data (1) 76- 82 E7.1 yr Age4 ? Age from Tout et al. (1999MNRAS.310..360T) isochrones 83 A1 --- n_Age4 [*] *: No data (1) 85- 88 F4.2 solMass Mass2 ? Mass from Palla and Stahler (1999ApJ...525..772P) evolutionary tracks 89 A1 --- n_Mass2 [*] *: No data (1) 91- 94 F4.2 solMass Massmin2 ? Mass minimum from Palla and Stahler (1999ApJ...525..772P) evolutionary tracks 95 A1 --- n_Massmin2 [*] *: No data (1) 97-100 F4.2 solMass Massmax2 ? Mass maximum from Palla and Stahler (1999ApJ...525..772P) evolutionary tracks 101 A1 --- n_Massmax2 [*] *: No data (1) 103-106 F4.2 solMass Mass3 ? Mass from Siess et al. (2000A&A...358..593S) evolutionary tracks 107 A1 --- n_Mass3 [*] *: No data (1) 109-112 F4.2 solMass Mass4 ? Mass from Tout et al. (1999MNRAS.310..360T) evolutionary tracks 113 A1 --- n_Mass4 [*] *: No data (1)
Note (1): the symbols are: *: No computation could be done, due to the position of the star in the HR diagram. MS: The characters "MS" correspond to a star located on the main sequence or when one of the error bar crosses it.
Acknowledgements: Michele Gerbaldi
(End) Patricia Bauer [CDS] 21-Sep-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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