The discovery of a low-mass, pre-main-sequence stellar association around γ Velorum
The discovery of a low-mass, pre-main-sequence stellar association around γ Velorum
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发现 γ Velorum 周围存在低质量前主序星关联
DOI：
10.1046/j.1365-8711.2000.03455.x
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发表时间：
2000
影响因子：
4.8
通讯作者：
M. Kenyon
中科院分区：
文献类型：
--
作者：
M. Pozzo;R. Jeffries;T. Naylor;E. Totten;S. Harmer;M. Kenyon
我们报告了在沃尔夫-拉叶/O-星双星系统伽马(2) Vel 和 Vela OB2 星团方向上偶然发现的一群低质量前主序 (PMS) 恒星。我们认为 gamma(2) Vel 和低质量恒星确实相关并且近似同时存在，并且两者的距离都在 360 到 490 pc 之间，在 2 sigma 水平上与最近的 gamma(2) Vel 的依巴谷视差不一致，但与旧的距离估计一致。我们的结果显然对 gamma(2) Vel 系统的物理参数有影响，但也提供了一个令人兴奋的机会来研究大质量恒星对其较低质量 PMS 兄弟的质量函数和星周盘寿命的影响。
We report the serendipitous discovery of a population of low-mass, pre-main-sequence (PMS) stars in the direction of the Wolf-Rayet/O-star binary system gamma(2) Vel and the Vela OB2 association. We argue that gamma(2) Vel and the low-mass stars are truly associated and approximately coeval, and that both are at distances between 360 and 490 pc, disagreeing at the 2 sigma level with the recent Hipparcos parallax of gamma(2) Vel, but consistent with older distance estimates. Our results clearly have implications for the physical parameters of the gamma(2) Vel system, but also offer an exciting opportunity to investigate the influence of high-mass stars on the mass function and circumstellar disc lifetimes of their lower mass PMS siblings.
影响因子：
3.2
作者：
V. Mannings;A. Boss;S. Russell
通讯作者：
V. Mannings;A. Boss;S. Russell