An IRAS/ISSA Survey of Bow Shocks Around Runaway Stars

An IRAS/ISSA Survey of Bow Shocks Around Runaway Stars
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IRAS/ISSA 对失控恒星周围弓形激波的调查

DOI:
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发表时间:
1995
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影响因子:
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通讯作者:
D. Buren
D. Buren
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文献类型:
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作者:
D. Buren

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我们在183颗逃逸恒星的位置附近寻找类似弓形激波的物体,就像已知的蛇夫座和凸轮周围的物体一样。主要基于超过60微米发射的存在和形态,我们确定了56个新的候选弓形激波,并确定了它们的光度和形态参数。此前,人们只知道十几个这样的人。在25颗恒星附近存在分辨率良好的结构。红外星云的对称轴分布与其自身运动矢量的分布比较表明,这两个方向是非常显著的对齐。观测到的排列强烈地表明,我们所看到的结构来自恒星风与星际介质的相互作用,这证明了这些远红外物体是恒星风弓激波。
We searched for bow shock-like objects like those known around Oph and a Cam near the positions of 183 runaway stars. Based primarily on the presence and morphology of excess 60 micron emission we identify 56 new candidate bow shocks, for which we determine photometric and morphological parameters. Previously only a dozen or so were known. Well resolved structures are present around 25 stars. A comparison of the distribution of symmetry axes of the infrared nebulae with that of their proper motion vectors indicates that these two directions are very significantly aligned. The observed alignment strongly suggests that the structures we see arise from the interaction of stellar winds with the interstellar medium, justifying the identification of these far-infrared objects as stellar wind bow shocks.