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arXiv · 1311.1270

Distance to the SMC from eclipsing binaries

Dariusz Graczyk·Grzegorz Pietrzynski·Bogumił Pilecki·Ian B. Thompson·Wolfgang Gieren·Piotr Konorski·Andrzej Udalski·Igor Soszynski
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Abstract

The preliminary distance to a long period eclipsing binary in the Small Magellanic Cloud SMC108.1.14904 is presented. The binary system contains two non-active G-type bright giants. The orbital period is 185 days and the orbit is circular. Using surface brightness calibration we calculated distance modulus to the system (m-M)= 19.02 +/- 0.04 (stat.) +/- 0.05 (syst.) mag, where systematic error is dominated by uncertainty of surface brightness calibration. This is a second eclipsing binary in the SMC analysed by our team.

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Dariusz Graczyk, Grzegorz Pietrzynski, Bogumił Pilecki, Ian B. Thompson, Wolfgang Gieren, Piotr Konorski, Andrzej Udalski, Igor Soszynski. 2013-11-06. Distance to the SMC from eclipsing binaries. https://doi.org/10.1017/s1743921312021436

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