arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.1445astro-ph.CO
收藏

经典凸、伪凸和超大质量黑洞的共存

The Coexistence of Classical Bulges, Pseudobulges, and Supermassive Black Holes

Peter Erwin

摘要:

一些S 0和早期类型的螺旋星系拥有“复合凸起”;在这些星系中,光度凸起-超过盘光的中央恒星光-由“(盘状)伪凸起”组成,具有扁平的盘状形态和相对较冷的恒星运动学,以及嵌入其中的圆形,运动学热的“经典凸起”。我推测,在这样的星系中的超大质量黑洞(SMBH)可能只与经典的凸起组件,而不是与pseudoclull组件;与SMBH质量的初步比较似乎支持这一假设。

英文摘要:

Some S0 and early-type spiral galaxies possess "composite bulges"; in these galaxies, the photometric bulge -- the central stellar light in excess of the disk light -- is composed of both a "(disky) pseudobulge", with a flattened, disklike morphology and relatively cool stellar kinematics, and a rounder, kinematically hot "classical bulge" embedded within. I speculate that supermassive black holes (SMBH) in such galaxies may correlate with the classical-bulge component only, and not with the pseudobulge component; preliminary comparisons with SMBH masses appear to support this hypothesis.

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。

↑