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:
影响因子:
--
通讯作者:
S. Hodgkin
中科院分区:
文献类型:
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作者:
N. Hambly;S. Smartt;S. Hodgkin
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.