Classification of Metal-Deficient Dwarfs in the Vilnius Photometric System

Abstract

Methods used for the quantitative classification of metal-deficient stars in the Vilnius photometric system are reviewed. We present a new calibration of absolute magnitudes for dwarfs and subdwarfs, based on Hipparcos parallaxes. The new classification scheme is applied to a sample of Population II visual binaries.

Keywords

• techniques
• photometric
• stars
• fundamental parameters (classification)
• stars
• population ii