New massive x-ray binary candidates from the rosat galactic plane survey I - results from a cross-correlation with ob star catalogues
New massive x-ray binary candidates from the rosat galactic plane survey I - results from a cross-correlation with ob star catalogues
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发表时间：
1996-11
影响因子：
6.5
通讯作者：
C. Motch;F. Haberl;K. Dennerl;M. Pakull;E. Janot-Pacheco
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作者：
C. Motch;F. Haberl;K. Dennerl;M. Pakull;E. Janot-Pacheco
我们报告发现了几个新的OB/X射线加速器二元候选者。这些大质量系统是通过在位置SIMBAD OB星星星表中与位于低银河系纬度（jb j20）的ROSAT全天空巡天部分进行交叉相关，并选择在“正常”恒星水平上显示出最显著X射线发射特征的早期类型恒星而发现的。目前的搜索仅限于恒星早于B6和X射线光度10 - 31尔格1。后续的光学和X射线观测消除了错误识别的OB星以及与闯入者X射线发射器（主要是活跃的日冕）的虚假匹配，留下了很可能是新的大质量X射线联星：O 7星星LS 5039和Be星BSD 24- 491、LS 992、LS 1698和LS I +61 235。LS 1698可能是硬X射线瞬变4U 1036-56的光学对应物。
WereportthediscoveryofseveralnewOB/X-rayac- creting binary candidates. These massive systems were found by cross-correlating in position SIMBAD OB star catalogues withthepartoftheROSATall-skysurveylocatedatlowgalactic latitudes(jb j20)andselectingtheearlytypestarswhichap- parentlydisplayedthemostsignicantexcessofX-rayemission over the 'normal' stellar level. The present search is restricted to stars earlier than B6 and X-ray luminosities 10 31 ergs 1 . Follow-up optical and X-ray observations allowed to remove misidentied OB stars and spurious matches with interloper X-ray emitters (mostly active coronae) leaving ve very likely new massive X-ray binaries: the O7 star LS 5039 and the Be stars BSD 24- 491, LS 992, LS 1698 and LS I +61 235. This lattersourcewasalreadymentionedinanearlierpaper.LS 1698 is the probable optical counterpart of the hard X-ray transient 4U 1036-56.