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UBVRI distances and metallicities for a sample of late-type Hipparcos stars

Published online by Cambridge University Press:  07 August 2017

X. Luri ,
J. Torra  and
F. Figueras
X. Luri
Affiliation:
Departament d'Astronomia i Meteorologia (Universitat de Barcelona) Avinguda Diagonal 647 - 08028 Barcelona (Spain)
J. Torra
Affiliation:
Departament d'Astronomia i Meteorologia (Universitat de Barcelona) Avinguda Diagonal 647 - 08028 Barcelona (Spain)
F. Figueras
Affiliation:
Departament d'Astronomia i Meteorologia (Universitat de Barcelona) Avinguda Diagonal 647 - 08028 Barcelona (Spain)

Abstract

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Using UBVRI photometry and proper motions we have developed a procedure to separate dwarfs and subdwarfs from stars of other luminosity classes. Three independent methods to take into account the effect of metallicity in photometric distance determinations have been applied, giving special attention to the use of infrared colours for stars with (B – V) > 0.8m.

The application of these methods to a sample of 426 stars included in the HIPPARCOS Input Catalogue –for which we have obtained photometric data– allow us to analyze systematic differences.

Keywords

PhotometryMetallicityLuminosity Classes
Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 449
Copyright
Copyright © Kluwer 

References

Luri, X., Figueras, F. and Torra, J.: 1991, Astron. J. , (In preparation).Google Scholar
Luri, X.: 1991, Tesis de licenciatura , Universitat de Barcelona.Google Scholar