The distance to the Small Magellanic Cloud from eclipsing binaries
Abstract
A preliminary distance etimate to SMC 108.1.14904, a long-period eclipsing binary in the Small Magellanic Cloud, is presented. The binary system contains two bright, non-active G-type giants. Its orbital period is 185 days and the orbit is circular. Using surface brightness calibration, we obtain a distance modulus to the system of (m-M)= 19.02 +/- 0.04 (statistical) +/- 0.05 (systematic) mag, where the systematic error is dominated by uncertainties in the surface brightness calibration. This is a second eclipsing binary in the SMC analysed by our team.
- Publication:
-
Advancing the Physics of Cosmic Distances
- Pub Date:
- February 2013
- DOI:
- 10.1017/S1743921312021436
- arXiv:
- arXiv:1311.1270
- Bibcode:
- 2013IAUS..289..222G
- Keywords:
-
- binaries: eclipsing;
- galaxies: distances and redshifts;
- galaxies: individual (Small Magellanic Cloud);
- Astrophysics - Cosmology and Extragalactic Astrophysics;
- Astrophysics - Galaxy Astrophysics
- E-Print:
- IAU Symposium 289 contributed talk