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arXiv 0803.0357astro-ph
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X射线源的中红外特性

The Mid-Infrared Properties of X-ray Sources

V. Gorjian, M. Brodwin, C. S. Kochanek, S. Murray, D. Stern, K. Brand, P. R. Eisenhardt, M. L. N. Ashby, P. Barmby, M. J. I. Brown, A. Dey, W. Forman, B. T. Jan… 展开作者

V. Gorjian, M. Brodwin, C. S. Kochanek, S. Murray, D. Stern, K. Brand, P. R. Eisenhardt, M. L. N. Ashby, P. Barmby, M. J. I. Brown, A. Dey, W. Forman, B. T. Jannuzi, C. Jones, A. T. Kenter, M. A. Pahre, J. C. Shields, M. W. Werner, S. P. Willner

摘要:

我们将斯皮策IRAC浅层巡天和钱德拉XBootes巡天的结果结合起来,对NOAO深宽视场巡天的8.5平方度Bootes场进行了中红外和X射线源的最大对比。比较仅限于在0.5-7.0 keV范围内X射线通量> 8x 10 -15 erg cm-2s-1的源和通量大于18.4 mag(12.3 uJy)的3.6 um中红外源。在这个最敏感的IRAC波段中,3086个X射线源中的85%具有基于贝叶斯匹配技术的80%置信水平的中红外对应物。根据目视检查,只有2.5%的样品根本没有IRAC对应物。即使是在同一领域的一个较小的,但一个显着更深的钱德拉调查,IRAC浅层调查恢复了大部分的X射线源。在所有四个IRAC波段中检测到的大多数(65%)Chandra源占据了IRAC [3.6] - [4.5] vs [5.8] - [8.0]颜色-颜色空间的明确区域。这些X射线源很可能是红外发光的、未被遮蔽的I型活动星系核,活动星系核宿主星系贡献的中红外通量很少。剩下的钱德拉源中,大多数是低光度的I型和II型活动星系核,其中红外辐射主要由宿主星系控制,而大约5%是银河系恒星或非常本地的星系。

英文摘要:

We combine the results of the Spitzer IRAC Shallow Survey and the Chandra XBootes Survey of the 8.5 square degrees Bootes field of the NOAO Deep Wide- Field Survey to produce the largest comparison of mid-IR and X-ray sources to date. The comparison is limited to sources with X-ray fluxes >8x10-15 erg cm-2s-1 in the 0.5-7.0 keV range and mid-IR sources with 3.6 um fluxes brighter than 18.4 mag (12.3 uJy). In this most sensitive IRAC band, 85% of the 3086 X-ray sources have mid-IR counterparts at an 80% confidence level based on a Bayesian matching technique. Only 2.5% of the sample have no IRAC counterpart at all based on visual inspection. Even for a smaller but a significantly deeper Chandra survey in the same field, the IRAC Shallow Survey recovers most of the X-ray sources. A majority (65%) of the Chandra sources detected in all four IRAC bands occupy a well-defined region of IRAC [3.6] - [4.5] vs [5.8] - [8.0] color-color space. These X-ray sources are likely infrared luminous, unobscured type I AGN with little mid-infrared flux contributed by the AGN host galaxy. Of the remaining Chandra sources, most are lower luminosity type I and type II AGN whose mid-IR emission is dominated by the host galaxy, while approximately 5% are either Galactic stars or very local galaxies.

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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