Variable dust formation by the colliding-wind Wolf-Rayet system HD 36402 in the Large Magellanic Cloud

被引：7
|
作者：
Williams, P. M. [1 ]
Chu, Y. -H. [2 ]
Gruendl, R. A. [2 ]
Guerrero, M. A. [3 ]
机构：
[1] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
[2] Univ Illinois, Dept Astron, Urbana, IL 61801 USA
[3] CSIC, IAA, E-18008 Granada, Spain
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 431卷 / 02期
基金：
美国国家航空航天局;
关键词：
stars: individual: HD 36402; stars:; winds; outflows; stars: Wolf-Rayet; infrared: stars; X-rays: binaries; POINT-SOURCE CATALOG; X-RAY; MASS-LOSS; O-STARS; WR; 140; BINARIES; STELLAR; DENIS; LMC; ULTRAVIOLET;
D O I：
10.1093/mnras/stt237
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Infrared photometry of the probable triple WC4(+ O?)+ O8I: Wolf-Rayet system HD 36402 (= BAT99-38) in the Large Magellanic Cloud shows emission characteristic of heated dust. The dust emission is variable on a time-scale of years, with a period near 4.7 yr, possibly associated with orbital motion of the O8 supergiant and the inner P similar or equal to 3.03- dWC4+O binary. The phase of maximum dust emission is close to that of the X-ray minimum, consistent with both processes being tied to colliding wind effects in an elliptical binary orbit. It is evident that Wolf-Rayet dust formation occurs also in metal-poor environments.
引用
收藏
页码：1160 / 1166
页数：7
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