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Luminosities of FBS late type M stars

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Abstract

A catalog of 995 C and late M type stars is compiled from the First Byurakan Survey of the sky (FBS). The question of effectively separating giants and dwarfs among the stars of spectral class M is examined using data from this catalog, the 2MASS survey, and a number of other catalogs. This has made it possible to determine the luminosity class of 846 class M stars from the FBS survey. In the sample of FBS late M stars, 187 are dwarfs and 659 are giants. The sample of FBS late M stars is compared statistically with the set of known samples of type M stars. The subsample of FBS M-giants is proved to be similar to Stephenson’s standard sample of M-giants. A detailed statistical analysis of these two samples is carried out.

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Authors and Affiliations

  1. V. A. Ambartsumyan Byurakan Astrophysical Observatory, Armenia

    H. V. Abrahamyan

  2. N-Vision Optics LLC, Burlington, MA, USA

    H. V. Abrahamyan

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  1. H. V. Abrahamyan
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Correspondence to H. V. Abrahamyan.

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Translated from Astrofizika, Vol. 50, No. 4, pp. 589–602 (November 2007).

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Abrahamyan, H.V. Luminosities of FBS late type M stars. Astrophysics 50, 488–499 (2007). https://doi.org/10.1007/s10511-007-0045-3

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  • DOI: https://doi.org/10.1007/s10511-007-0045-3

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