New distance and depth estimates from observations of eclipsing binaries in the SMC

被引：2

作者：

North, Pierre L. ^{[1
]}

Gauderon, Romain ^{[1
]}

Royer, Frederic ^{[2
]}

机构：

[1] EPFL, Observ Sauverny, CH-1290 Versoix, Switzerland

[2] Observ Paris, GEPI, Sect Meudon, F-92195 Meudon, France

来源：

MAGELLANIC SYSTEM: STARS, GAS, AND GALAXIES | 2009年 / 256期

关键词：

binaries: eclipsing; stars: distances; stars: evolution; stars: fundamental parameters; stars: kinematics; galaxies: distances and redshifts; galaxies: kinematics and dynamics; galaxies: individual (SMC); Magellanic Clouds; distance scale; LARGE-MAGELLANIC-CLOUD; FUNDAMENTAL PROPERTIES; STAR LIGHT; KINEMATICS; PARAMETERS; COMPONENT; MASS; EFFICIENCY;

D O I：

10.1017/S1743921308028263

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A sample of 33 eclipsing binaries observed in a field of the SMC with FLAMES@VLT is presented. The radial velocity curves obtained, together with existing OGLE light curves, allowed the determination of all stellar and orbital parameters of these binary systems. The mean distance modulus of the observed pact; of the SMC is 19.05 mag, based on the 26 roost, reliable, systems. Assuming ail average error of 0.1 mag on the distance modulus to an individual system, and a gaussian distribution of the distance moduli, we obtain a 2-sigma depth of 0.36 mag or 10.6 kpc. Some results on the kinematics of the binary stars and of the H II gas are also given.

引用

页码：57 / +

页数：2

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