BVRI PHOTOMETRY OF CANDIDATE EUV ROSAT SOURCES

被引：14
|
作者：
SCHWARTZ, RD
DAWKINS, D
FINDLEY, D
CHEN, DL
机构：
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1995年 / 107卷 / 713期
关键词：
D O I：
10.1086/133606
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report BVRI photometry of stars in 12 selected extreme ultraviolet ROSAT fields with the goal of obtaining firm identifications of the optical counterparts to the ROSAT sources. We present BVRI magnitudes and finder charts for 10 optical counterparts identified previously in a spectroscopic survey. Among the 10 sources are 7 probable white dwarfs, 2 dwarf Ke stars, and one cataclysmic variable. One of the white-dwarf sources (RE J2207+252) appears to reside in a visual binary system with a K4V companion. Two sources (RE J1853+503 and RE J2117+484) have yet to be identified with visible stars, although our photometry suggests some candidates for future spectroscopic investigation.
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收藏
页码：667 / 671
页数：5
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