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arXiv 0707.0624astro-ph
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低质量X射线双星GR Mus(XB1254-690)的运动学研究

Kinematical Studies of the Low Mass X-Ray Binary GR Mus (XB1254-690)

A. D. Barnes, J. Casares, R. Cornelisse, P. A. Charles, D. Steeghs, R. I. Hynes, K. O'Brien

摘要:

我们提出了同时高分辨率光谱和X射线数据的X射线二元系统GR Mus(XB 1254 -690),获得了在整个范围内的轨道相位。X射线观测被用来重新建立该源的轨道星历。光学数据包括该系统中供体星的第一次光谱检测,通过使用鲍文荧光混合物(~4630-4650 A)的多普勒断层扫描技术。结合利用He II 4686发射线的机翼对致密天体轨道参数的估计,导出中子星的动力学质量约束为1.20 < M_X/ M_{sun} < 2.64,伴星的动力学质量约束为0.45 < M_2/ M_{sun} < 0.85。

英文摘要:

We present simultaneous high-resolution optical spectroscopy and X-ray data of the X-ray binary system GR Mus (XB1254-690), obtained over a full range of orbital phases. The X-ray observations are used to re-establish the orbital ephemeris for this source. The optical data includes the first spectroscopic detection of the donor star in this system, through the use of the Doppler Tomography technique on the Bowen fluorescence blend (~4630-4650 A). In combination with an estimate for the orbital parameters of the compact object using the wings of the He II 4686 emission line, dynamical mass constraints of 1.20 < M_X/M_{sun} < 2.64 for the neutron star and 0.45 < M_2/M_{sun} < 0.85 for the companion are derived.

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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