Galactic model parameters for field giants separated from field dwarfs by their 2MASS and V apparent magnitudes


Bilir S. , Karaali S. , Güver T. , Karataş Y. , Ak S.

ASTRONOMISCHE NACHRICHTEN, vol.327, no.1, pp.72-81, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 327 Issue: 1
  • Publication Date: 2006
  • Doi Number: 10.1002/asna.200510480
  • Title of Journal : ASTRONOMISCHE NACHRICHTEN
  • Page Numbers: pp.72-81
  • Keywords: Galaxy : structure, Galaxy : fundamental parameters, stars : giants, STELLAR LUMINOSITY FUNCTION, PROPER-MOTION STARS, RGU PHOTOMETRY, GALAXY MODELS, OLD STARS, KINEMATICS, POPULATION, ABUNDANCE, COUNTS, HALO

Abstract

We present a method which separates field dwarfs and field giants by their 2MASS and V apparent magnitudes. This method is based on spectroscopically selected standards and is hence reliable. We applied it to stars in two fields, SA 54 and SA 82, and we estimated a full set of Galactic model parameters for giants including their total local space density. Our results are in agreement with the ones given in the recent literature.