Binaries with post-T Tauri secondaries Virtual Observatory Resource

Authors
  1. Gerbaldi M.
  2. Faraggiana R.
  3. Balin N.
  4. Published by
    CDS
Abstract

File table2 contains the values of the color indices: (b-y), m1, c1, H{beta}, 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.

Keywords
  1. pre-main-sequence-stars
  2. early-type-stars
  3. stellar-ages
  4. stellar-masses
  5. effective-temperature
  6. visible-astronomy
  7. medium-band-photometry
Bibliographic source Bibcode
2001A&A...379..162G
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/379/162
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/379/162
Document Object Identifer DOI
doi:10.26093/cds/vizier.33790162

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/379/162
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/379/162
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/379/162
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/0?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/379/162/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/379/162/table5?

History

2001-11-11T12:46:06Z
Resource record created
2001-11-11T12:46:06Z
Created
2018-01-10T11:47:12Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr