Colliding winds in three Magellanic-Cloud WR binaries

被引：0
|
作者：
St-Louis, N. [1 ]
Moffat, A. F. J. [1 ]
Marchenko, S. [2 ]
Pittard, J. M. [3 ]
Boisvert, P. [1 ]
机构：
[1] Univ Montreal, Dept Phys, CP 6128,Succ Ctr Ville, Montreal, PQ H3C 3J7, Canada
[2] Western Kentucky Univ, Dept Phys & Astron, Bowling Green, KY 42101 USA
[3] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
来源：
ASTROPHYSICS IN THE FAR ULTRAVIOLET: FIVE YEARS OF DISCOVERY WITH FUSE | 2006年 / 348卷
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a preliminary analysis of FUSE observations for three Wolf-Rayet (WR) binaries in the Magellanic Clouds: Sand I (SMC), Brey 22 (LMC) and Brey 32 (LMC). Phase-dependent variability is detected for these systems which we attribute to selective wind eclipses and excess emission from the shock cone that is formed when the two massive winds in the system collide. For Sand 1, profile fits yield an orbital inclination of i similar to 40 degrees, a total cone opening-angle of similar to 80-90 degrees and a streaming velocity along the shock cone of similar to 3000 kms(-1). For Brey 22 and Brey 32, two systems with almost the same spectral type, similar changes are observed but because the orbital periods are very different for these two binaries, some notable differences in their variability patterns are found.
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页码：121 / +
页数：2
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