WD 0346+246: A very low luminosity, cool degenerate in Taurus

被引：51

作者：

Hambly, NC

Smartt, SJ

Hodgkin, ST

机构：

[1] ISAAC NEWTON GRP TELESCOPES,SANTA CRUZ PALMA 38780,LA PALMA,SPAIN

[2] UNIV LEICESTER,DEPT PHYS & ASTRON,ASTRON GRP,LEICESTER LE1 7RH,LEICS,ENGLAND

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 489卷 / 02期

关键词：

Galaxy; stellar content; stars; individual; (WD; 0346+246); white dwarfs;

D O I：

10.1086/316797

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 (mu = 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 similar to 3900 K). We discuss the relevance of this discovery to current research concerning Galactic structure and evolution.

引用

页码：L157 / L160

页数：4

共 27 条

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ALCOCK C, 1997, UNPUB APJ

[2]

BEARD SM, 1990, MON NOT R ASTRON SOC, V247, P311

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