Seyfert1星系黑洞质量与辐射压的研究

摘要

从斯隆数字巡天（SDSS）收集了214个Seyfert1星系，其中147个窄线的Seyfert1星系（NLSls），67个宽线的Seyfert1星系（BLSls），对其黑洞质量、核球速度弥散、爱丁顿比、5100A光度、红移进行了研究，得到以下结论：1）在进行黑洞质量估算时，应考虑辐射压的影响，特别是窄线Seyfert1星系；2）在考虑辐射压的情况下，窄线Seyfert1星系满足近距正常星系的MBH一盯关系，其吸积未超爱丁顿极限吸积；3）在大样本下Seyfert1星系从窄线Seyfert1星系到宽线Seyfert1星系演化，与他人用其他方法获得的结果是一致的．%We collect 214 Seyfert 1 galaxies (147 narrow line Seyfert 1 and 67 broad line Seyfert 1) and research black hole mass, bulge velocity dispersion, Eddington ratio, luminosity at 5100A and red'shift. Our conclusions are follows: (1) when computing black hole mass, we should consider the effect of radiation pressure, especially for the narrow line Seyfert 1 galaxies; (2) when the effect of radiation pressure is considered, narrow line Seyfert 1 galaxies meet MBH-Cr relation of normal galaxies and are in sub-Eddington accretion; (3) in a large samples, the evolution of Seyfert 1 galaxies is from narrow line Seyfert 1 galaxies to broad line Seyfert 1 galaxies, which is consistent with other results obtained in different ways.