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arXiv 0910.3229astro-ph.HEastro-ph.SR
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XID II:ROSAT亮源表X射线源与2 MASS点源表近红外源的统计交叉关联

XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources

Christian Bernt Haakonsen, Robert E. Rutledge

摘要:

18806 ROSAT全天巡天亮源目录(RASS/BSC)X射线源与来自2微米全天巡天点源目录(2 MASS/PSC)的近红外(NIR)源定量交叉关联。给出了关联目录,列出了每个RASS/BSC源的最可能对应物、NIR源和X射线源唯一关联的概率Pid以及2 MASS/PSC源都不与X射线源关联的概率Pnoid。该目录包括3853个高质量(Pid>0.98)X射线-NIR匹配,2280个中等质量(0.98>Pid>0.9)匹配和4153个低质量(0.9>Pid>0.5)匹配。在高质量匹配中,1418个是未在SIMBAD数据库中列出的关联,并且在先前的工作中没有为RASS/BSC源呈现与USNO-A2光源的高质量匹配。目前的工作提供了大量的新协会与RASS/BSC对象,将需要光学/近红外光谱分类。例如,在协会目录中列出的6133 Pid>0.9 2 MASS/PSC对应物中,2411在SIMBAD数据库中没有列出分类。这些2 MASS/PSC源可能包括科学上有用的X射线发射源类别(白矮星、日冕活动恒星、活动星系核),但也可能包含以前未知的源类别。我们确定RASS/BSC中的所有日冕活动星在2 MASS/PSC中都应该有对应的星,因此这些RASS/BSC源与它们的NIR对应源的独特关联是有限的。

英文摘要:

The 18806 ROSAT All Sky Survey Bright Source Catalog (RASS/BSC) X-ray sources are quantitatively cross-associated with near-infrared (NIR) sources from the Two Micron All Sky Survey Point Source Catalog (2MASS/PSC). An association catalog is presented, listing the most likely counterpart for each RASS/BSC source, the probability Pid that the NIR source and X-ray source are uniquely associated, and the probability Pnoid that none of the 2MASS/PSC sources are associated with the X-ray source. The catalog includes 3853 high quality (Pid>0.98) X-ray--NIR matches, 2280 medium quality (0.98>Pid>0.9) matches, and 4153 low quality (0.9>Pid>0.5) matches. Of the high quality matches, 1418 are associations that are not listed in the SIMBAD database, and for which no high quality match with a USNO-A2 optical source was presented for the RASS/BSC source in previous work. The present work offers a significant number of new associations with RASS/BSC objects that will require optical/NIR spectroscopy for classification. For example, of the 6133 Pid>0.9 2MASS/PSC counterparts presented in the association catalog, 2411 have no classification listed in the SIMBAD database. These 2MASS/PSC sources will likely include scientifically useful examples of known source classes of X-ray emitters (white dwarfs, coronally active stars, active galactic nuclei), but may also contain previously unknown source classes. It is determined that all coronally active stars in the RASS/BSC should have a counterpart in the 2MASS/PSC, and that the unique association of these RASS/BSC sources with their NIR counterparts thus is confusion limited.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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