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arXiv 0905.0756astro-ph.GA
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从AKARI和Spitzer看星风与星际介质相互作用的三维动力学

3-D Dynamics of Interactions between Stellar Winds and the Interstellar Medium as Seen by AKARI and Spitzer

Toshiya Ueta, Hideyuki Izumiura, Issei Yamamura, Robert E. Stencel, Yoshikazu Nakada, Mikako Matsuura, Yoshifusa Ita, Toshihiko Tanabe, Hinako Fukushi, Noriyuki… 展开作者

Toshiya Ueta, Hideyuki Izumiura, Issei Yamamura, Robert E. Stencel, Yoshikazu Nakada, Mikako Matsuura, Yoshifusa Ita, Toshihiko Tanabe, Hinako Fukushi, Noriyuki Matsunaga, Hiroyuki Mito, Angela K. Speck

摘要:

AKARI红外天文卫星和斯皮策太空望远镜最近对质量损失恒星的远红外测绘表明,远红外弓形激波结构可能在这些质量损失恒星周围无处不在,特别是当这些恒星具有高自行时。这样的远红外弓形激波的更高的空间分辨率数据现在允许详细的拟合产生的弓形激波锥的方向相对于日心空间运动矢量的中心恒星,使用这些弓形激波的动量守恒的假设下,在物理薄界面之间的恒星风和星际介质(ISM)的解析解。对所观察到的弓形激波结构的拟合分析将能够确定环境ISM流矢量,从而建立一种新技术来探测这些相互作用系统的局部3-D ISM动力学。在这篇评论中,我们将展示这种新技术的三个特殊情况下,参宿四,R长蛇座,和R仙后座。

英文摘要:

Recent far-infrared mapping of mass-losing stars by the AKARI Infrared Astronomy Satellite and Spitzer Space Telescope have suggested that far-infrared bow shock structures are probably ubiquitous around these mass-losing stars, especially when these stars have high proper motion. Higher spatial resolution data of such far-infrared bow shocks now allow detailed fitting to yield the orientation of the bow shock cone with respect to the heliocentric space motion vector of the central star, using the analytical solution for these bow shocks under the assumption of momentum conservation across a physically thin interface between the stellar winds and interstellar medium (ISM). This fitting analysis of the observed bow shock structure would enable determination of the ambient ISM flow vector, founding a new technique to probe the 3-D ISM dynamics that are local to these interacting systems. In this review, we will demonstrate this new technique for three particular cases, Betelgeuse, R Hydrae, and R Cassiopeiae.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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