首页> 外文期刊>The Astrophysical journal >JOINT Hα AND X-RAY OBSERVATIONS OF MASSIVE X-RAY BINARIES. Ⅰ. THE B SUPERGIANT SYSTEM LS I +65 010 = 2S 0114+650
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JOINT Hα AND X-RAY OBSERVATIONS OF MASSIVE X-RAY BINARIES. Ⅰ. THE B SUPERGIANT SYSTEM LS I +65 010 = 2S 0114+650

机译:大量X射线双星的联合Hα和X射线观察。 Ⅰ。 B超系统LS I +65 010 = 2S 0114 + 650

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摘要

We report on a 3 yr spectroscopic monitoring program of the Ha emission in the massive X-ray binary LS I +65 010 = 2S 0114+650, which consists of a B supergiant and a slowly rotating X-ray pulsar. We present revised orbital elements that yield a period of P = 11.5983 ± 0.0006 days and confirm that the orbit has a nonzero eccentricity e = 0.18 ± 0.05. The Hα emission profile is formed in the base of the wind of the B supergiant primary, and we show how this spectral feature varies on timescales that are probably related to the rotational period of the B supergiant. We also examine the X-ray fluxes from the Rossi X-ray Timing Explorer All-Sky Monitor instrument, and we show that the X-ray orbital light curve has a maximum at periastron and a minimum at the inferior conjunction of the B supergiant. We also show that the wind emission strength and the high-energy X-ray flux appear to vary in tandem on timescales of approximately 1 yr.
机译:我们报告了大规模X射线二进制LS I +65 010 = 2S 0114 + 650中Ha发射的3年光谱监控程序,该程序由B超巨星和缓慢旋转的X射线脉冲星组成。我们提出修正后的轨道要素,其周期为P = 11.5983±0.0006天,并确认该轨道具有非零的离心率e = 0.18±0.05。 Hα的发射曲线是在B超巨星初级风的基础上形成的,我们展示了这种频谱特征如何随可能与B超巨星旋转周期相关的时标变化。我们还检查了来自Rossi X射线定时资源管理器“全天候监视”仪器的X射线通量,结果表明,X射线轨道光曲线在周星体中具有最大值,在B超巨星的次合点处具有最小值。我们还显示,风发射强度和高能X射线通量似乎在大约1年的时间尺度上串联变化。

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