Fundamental Properties of Eclipsing Binary Stars in the Andromeda Galaxy

Details Fundamental Properties of Eclipsing Binary Stars in the Andromeda Galaxy Fundamental Properties of Eclipsing Binary Stars in the Andromeda Galaxy

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..349..367v&link_type=abstract

Astrophysics of Variable Stars, Pecs, Hungary, 5-10 September 2005, Sterken, C. and Aerts, C. (eds). ASP Conference Series, Vol.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The analysis of light and radial velocity curves yields accurate masses and radii of eclipsing binary systems. In the present paper, this technique has been applied to an eclipsing binary system in the Andromeda Galaxy (M 31), obtaining the first direct determination of masses and radii for individual stars in this galaxy. By combining this method with HST/ACS spectrophotometry for several eclipsing binary systems, we will be able to test, for the first time, evolutionary models in M 31 and to determine its distance with an error of less than%.

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