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arXiv 1105.1677astro-ph.CO
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从混响映射计算Seyfert 1.5星系H 0507+164中黑洞的质量

Mass of the black hole in the Seyfert 1.5 galaxy H 0507+164 from reverberation mapping

C. S. Stalin, S. Jeyakumar, R. Coziol, R. S. Pawase, S. S. Thakur

摘要:

我们提出了我们的X射线源H 0507+164,一个低光度塞弗特1.5星系在红移z = 0.018的光学监测活动的结果。光谱观测在2007年11月21日至12月26日的22个夜晚进行。在同一时期还获得了13个夜晚的R波段光度观测。在我们的监测期间,发现银河系的连续谱和宽线通量发生了变化。R波段相对于伴星的微分光变曲线也显示出类似的变化。使用互相关分析,我们估计的时间延迟为3.01天(在休息帧),在5100埃的光学连续谱中的变化的宽H-β线通量的响应。利用这个时间延迟和H β谱线的宽度,我们估计宽线区(BLR)的半径为2.53 x 10^{-3}秒差距,黑洞的质量为9.62 x 10^{6}太阳质量。

英文摘要:

We present the results of our optical monitoring campaign of the X-ray source H 0507+164, a low luminosity Seyfert 1.5 galaxy at a redshift z = 0.018. Spectroscopic observations were carried out during 22 nights in 2007, from the 21 of November to the 26 of December. Photometric observations in the R-band for 13 nights were also obtained during the same period. The continuum and broad line fluxes of the galaxy were found to vary during our monitoring period. The R-band differential light curve with respect to a companion star also shows a similar variability. Using cross correlation analysis, we estimated a time delay of 3.01 days (in the rest frame), of the response of the broad H-beta line fluxes to the variations in the optical continuum at 5100 angstroms. Using this time delay and the width of the H-beta line, we estimated the radius for the Broad Line Region (BLR) of 2.53 x 10^{-3} parsec, and a black hole mass of 9.62 x 10^{6} solar mass.

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