WD 0346+246: A Very Low Luminosity, Cool Degenerate in Taurus

WD 0346+246: A Very Low Luminosity, Cool Degenerate in Taurus
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WD 0346 246:金牛座的光度非常低,冷堕落

DOI:
10.1086/316797
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发表时间:
1997
期刊:
The Astrophysical Journal Letters
影响因子:
--
通讯作者:
S. Hodgkin
S. Hodgkin
中科院分区:
--
文献类型:
--
作者:
N. Hambly;S. Smartt;S. Hodgkin

文献摘要

被引文献

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我们报告一个新的,非常低的光度,冷简并在金牛座地区的偶然发现。该天体是在英国施密特望远镜的七个I波段底片上发现的,是一颗自行速度非常快的星星(μ = 1.“3 yr-1),时间从1987年到1994年,是通过新型、快速、高精度显微密度计SuperCOSMOS进行数字化扫描发现的。光度测量和分光光度测量表明,该物体的温度与目前已知的少数最冷的白色矮星的温度相当(T~3900 K)。我们讨论了这一发现的相关性,目前的研究有关银河系的结构和演化。
We report the serendipitous discovery of a new, very low luminosity, cool degenerate in the region of Taurus. The object was found as a very high proper-motion star (μ = 1.″3 yr-1) on seven I-band UK Schmidt Telescope plates, dating from 1987 to 1994, via digitized scans from the new, fast, high-precision microdensitometer SuperCOSMOS. Photometry and spectrophotometry indicate that the object has a temperature comparable to those of the handful of coolest white dwarfs currently known (T~3900 K). We discuss the relevance of this discovery to current research concerning Galactic structure and evolution.