A low-temperature companion to a white dwarf star
A low-temperature companion to a white dwarf star
复制标题
DOI：
10.1038/336656a0
复制
发表时间：
1988-12
期刊：
影响因子：
64.8
通讯作者：
E. Becklin;B. Zuckerman
中科院分区：
文献类型：
--
作者：
E. Becklin;B. Zuckerman
我们发现了一个距白矮星 GD165 约 120 个天文单位的红外天体。除了我们去年报道过的可能是 Giclas 29-38 的褐矮星伴星1之外，GD165 的伴星是迄今为止报道过的最冷（2,100 K）矮星，根据一些理论模型，它应该是一颗质量在 0.06 到 0.08 个太阳质量之间的亚恒星褐矮星。这些结果，加上新发现的白矮星低质量伴星，改变了对极低质量恒星的研究，从研究少数偶然天体转变为研究统计分布。特别是，质量非常低的恒星甚至棕矮星在我们的银河系中似乎很常见。
We have discovered an infrared object located about 120 AU from the white dwarf GD165. With the exception of the possible brown dwarf companion to Giclas 29–38 which we reported last year1, the companion to GD165 is the coolest (2,100 K) dwarf star ever reported and, according to some theoretical models, it should be a sub-stellar brown dwarf with a mass between 0.06 and 0.08 solar masses. These results, together with newly discovered low-mass stellar companions to white dwarfs, change the investigation of very low-mass stars from the study of a few chance objects to that of a statistical distribution. In particular, it appears that very low-mass stars and perhaps even brown dwarfs could be quite common in our Galaxy.