Using 2MASS to detect main sequence companions to subdwarf B stars

Details Using 2MASS to detect main sequence companions to subdwarf B stars Using 2MASS to detect main sequence companions to subdwarf B stars

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.291..329r&link_type=abstract

Astrophysics and Space Science, v. 291, Issue 3, p. 329-332 (2004).

Astronomy and Astrophysics

Astrophysics

1

Multicolor Photometry

Scientific paper

We explore the binary fraction of subdwarf B (sdB) stars by using the Two Micron All Sky Survey to search for main sequence companions. We have convolved Kurucz models with appropriate filter bandpasses to examine how various combinations separate single sdB stars from sdB+MS binaries. We notice that the 2MASS magnitude limits greatly increase the fraction of inferred sdB+MS binaries and examine a magnitude-limited sample appropriate for single sdB stars.

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