Star Formation in the Orion Nebula I: Stellar Content
Star Formation in the Orion Nebula I: Stellar Content
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猎户座星云 I 中的恒星形成：恒星含量
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
T. Preibisch
中科院分区：
文献类型：
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作者：
August Muench;K. Getman;L. Hillenbrand;T. Preibisch
猎户座星云是附近（<1千秒差距）恒星形成区域中最常被观测到的区域之一，因此也是大量观测和解释参考文献的主题。本章的总结在空间上以泡状 HII 区域为边界，中央星云以外的源是本书其他章节中介绍的相同动态聚类的一部分。本文讨论了对大质量 OB 星、一般金牛座 T 族、猎户座星云内的亚恒星源和变星的全色观测。首先，介绍 400 年来星云观测的简史。由于每个新技术时代所提供的启示都清楚地标志着这段历史，因此最近对大型双星系统和射电星的超深 X 射线巡天和高分辨率多历元监测在本次综述中受到特别关注。讨论的主题包括前主序星群的运动学、多重性、质量分布、旋转和星周特征。还深入讨论了猎户座星云团距离的历史和当前限制；长期存在的 10-20% 的不确定性直到最近才开始收敛到接近 400 秒差距的值。对当前恒星族群回顾的补充是一个姊妹篇，回顾了分子云、电离氢离子区和最年轻的原恒星源。
The Orion Nebula is one of the most frequently observed nearby (<1 kiloparsec) star forming regions and, consequently, the subject of a large bibliography of observations and interpretation. The summary in this chapter is bounded spatially by the blister HII region, with sources beyond the central nebula that are part of the same dynamical clustering covered in other chapters in this book. Herein are discussed panchromatic observations of the massive OB stars, the general T Tauri population, the sub-stellar sources and variable stars within the Orion Nebula. First, a brief history of 400 years of observation of the Nebula is presented. As this history is marked clearly by revelations provided in each age of new technology, recent ultra-deep X-ray surveys and high resolution multi-epoch monitoring of massive binary systems and radio stars receive special attention in this review. Topics discussed include the kinematics, multiplicity, mass distribution, rotation, and circumstellar characteristics of the pre-main sequence population. Also treated in depth are historical and current constraints on the distance to the Orion Nebula Cluster; a long standing 10-20% uncertainty has only recently begun to converge on a value near ~400 parsecs. Complementing the current review of the stellar population is a companion chapter reviewing the molecular cloud, ionized HII region and the youngest protostellar sources.