XMM-Newton optical monitor observations of LMC X-3

被引：30

作者：

Soria, R

Wu, K

Page, MJ

Sakelliou, I

机构：

[1] UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

[2] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 01期

关键词：

accretion; accretion disks; black hole physics; binaries : general; stars : early type; X-rays : general;

D O I：

10.1051/0004-6361:20000065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the optical counterpart of the black-hole X-ray binary LMC X-3, by using XMM-Newton/OM observations carried out during a low-hard X-ray state. We derive a better constraint for the temperature, mass and radius of the companion star, and we show that the star is likely to be a similar to B5 subgiant filling its Roche lobe. Taking into account the Effect of X-ray irradiation, we suggest a value f(M) approximate to 1.5 M. for the mass function in this system, lower than previously thought; we provide a more accurate lower limit to the mass of the compact object.

引用

页码：L273 / L276

页数：4

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