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arXiv 1304.6364astro-ph.SRastro-ph.HE
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在银河系膨胀巡天中识别5颗相互作用双星

Identification of 5 Interacting Binaries in the Galactic Bulge Survey

C. T. Britt, M. A. P. Torres, R. I. Hynes, P. G. Jonker, T. J. Maccarone, S. Greiss, D. Steeghs, P. Groot, C. Knigge, A. Dieball, G. Nelemans, V. J. Mikles, L. Gossen

摘要:

我们介绍了钱德拉银河系膨胀巡天[CXOGBS J174009.1-284725(CX 5),CXOGBS J173935.7-272935(CX 18),CXOGBS J173946.9-271809(CX 28),CXOGBS J173729.1-292804(CX 37),CXOGBS J174607.6-261547(CX561)]。这些物体是根据明亮的光学对应物选择的,这些光学对应物很快就被发现在其光谱中有发射线。本文介绍了GBS光学跟踪,瞄准发射线对象的说明。在这五个天体中,有四个在斯隆r'波段表现出光度变化。CX 5显示了2.1小时的暂定时间,显然是一个中间极性(IP)。CX 28和CX 37都表现出无清除周期的闪烁。建议两者也是IP。CX 18被观测到经历了两次矮新星爆发。最后,CX 561没有表现出可探测的变化,尽管它的特征与静止的低质量X射线双星或激变变星一致。

英文摘要:

We present optical lightcurves, spectroscopy, and classification of five X-ray sources in the Chandra Galactic Bulge Survey [CXOGBS J174009.1-284725 (CX5), CXOGBS J173935.7-272935 (CX18), CXOGBS J173946.9-271809 (CX28), CXOGBS J173729.1-292804 (CX37), CXOGBS J174607.6-261547 (CX561)]. These objects were selected based on bright optical counterparts which were quickly found to have emission lines in their optical spectra. This paper presents an illustration of GBS optical follow-up, targeting emission line objects. Of these five objects, four exhibit photometric variability in the Sloan r' band. CX5 shows a tentative period of 2.1 hours and is clearly an Intermediate Polar (IP). CX28 and CX37 both exhibit flickering with no clear period. Both are suggested to also be IPs. CX18 was observed to undergo 2 dwarf nova outbursts. Finally, CX561 shows no detectable variability, although its characteristics would be consistent with either a quiescent Low Mass X-ray Binary or Cataclysmic Variable.

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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