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arXiv 2201.08007astro-ph.GA
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从PanSTARRS的观点看窄线Seyfert 1星系的光变

The Variability of the Narrow-line Seyfert 1 Galaxies from the PanSTARRS's View

Hongtao Wang, Yanping Su, Xue Ge, Yongyun Chen, Xiaoling Yu

摘要:

利用Pan-STARRAS 1巡天的观测数据,系统地研究了迄今为止最大的NLS 1星系样本的光变特征与物理参数之间的关系。研究结果如下:(1).我们发现在g、r、i、z和y波段的变率振幅和绝对星等之间存在显著的反相关,这与前人的研究结果一致。(2)光学波段的变化幅度与许多物理参数(如,λL(5100 Ω)、黑洞质量、爱丁顿比、R4570和R5007)。结果表明,变异幅度与L(5100 Ω)、MBH、爱丁顿比和R4570呈显著反相关,而与R5007呈正相关。这种关系可用简单的标准吸积盘模型来解释。(3)我们进一步研究了光变与射电光度/射电响度之间的关系。结果表明,在g和r波段上呈弱正相关,而在i、z和y波段上相关性不显著。主星系在i、z和y波段的近似分数的较大误差可能导致不显著的相关性。

英文摘要:

By means of the data sets from the Pan-STARRAS1 survey, we have systematically examined the relationship between the variability characteristics and the physical parameters of the largest NLS1 galaxy sample up to now. The results are summarized as follows: (1). We find significant anti-correlations between variability amplitude and absolute magnitude in g, r, i, z and y bands, which are consistent with the results in previous works. (2) The correlations between the variability amplitude in optical band and many physical parameters (e.g., λL(5100 Å), black hole mass, Eddington ratio, R4570 and R5007) are investigated. The results show the variability amplitude is significantly anti-correlated with L(5100 Å), MBH, Eddington ratio and R4570, but positively correlated with R5007. The relation could be explained by the simple standard accretion disk model. (3) We further investigate the relationship between optical variability and radio luminosity/radio-loudness. The results present weak positive correlation in g and r bands, but insignificant correlation in i, z and y bands. The large error of the approximate fraction of the host galaxy in i, z and y bands may lead to insignificant correlations.

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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