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arXiv 1507.06302astro-ph.HE
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IGR J17463-2854,一个可能的银河系中心区共生双星系统

IGR J17463-2854, a Possible Symbiotic Binary System in the Galactic Center Region

D. I. Karasev, S. S. Tsygankov, A. A. Lutovinov

摘要:

本文致力于确定位于银河核球附近的硬X射线源IGR J17463-2854的性质。使用INTEGRAL和钱德拉X射线天文台的数据,我们表明,在2-10千电子伏的能量带中的5个点的X射线源与近似相同的通量被检测到的对象的误差圆的研究。此外,在所有这些来源的光谱中已经检测到低能量下的显著吸收。基于VVV(VISTA/ESO)红外银河系膨胀巡天的数据,我们已经明确地确定了五个源中的三个,确定了相应恒星的J,H和K等,并获得了其余两个源的通量上限。对颜色-星等图的分析表明,这些天体中的一个很可能属于一类很少遇到的天体,共生双星系统(有几十个是确定的),即,由一颗白矮星和一颗红巨星组成的低质量双星系统。请注意,我们所有的结果都是使用改进的吸收值和在这个方向上不同于标准的消光定律获得的。

英文摘要:

This paper is devoted to determining the nature of the hard X-ray source IGR J17463-2854 located toward the Galactic bulge. Using data from the INTEGRAL and Chandra X-ray observatories, we show that five point X-ray sources with approximately identical fluxes in the 2-10 keV energy band are detected in the error circle of the object under study. In addition, significant absorption at low energies has been detected in the spectra of all these sources. Based on data from the VVV (VISTA/ESO) infrared Galactic Bulge Survey, we have unambiguously identified three of the five sources, determined the J, H and K magnitudes of the corresponding stars, and obtained upper limits on the fluxes for the remaining two sources. Analysis of the color-magnitude diagrams has shown that one of these objects most likely belongs to a class of rarely encountered objects, symbiotic binary systems (several tens are known with certainty), i.e., low-mass binary systems consisting of a white dwarf and a red giant. Note that all our results were obtained using improved absorption values and an extinction law differing in this direction from the standard one.

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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