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arXiv 1004.0137astro-ph.CO
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早型星系中心超大质量黑洞与球状星团系统的关联

A correlation between central supermassive black holes and the globular cluster systems of early-type galaxies

Andreas Burkert, Scott Tremaine

摘要:

椭圆星系、透镜星系和早型旋涡星系在其中心超大质量黑洞(SMBH)的质量M_BH和球状星团的数量N_GC之间表现出非常紧密的幂律相关:M_BH=m*N_GC^(1.08+/-0.04),m=1.7*10^5太阳质量。因此,SMBH的质量近似等于球状星团的总质量。基于有限的13个星系的样本,这个关系似乎是一个更好的预测SMBH质量(均方根散射0.2 dex)比SMBH质量和速度色散σ之间的M_BH-σ关系。小的散射反映了这样一个事实,即具有高球状星团比频率S_N的星系倾向于拥有比M_BH-σ关系所预期的更大质量的SMBH。

英文摘要:

Elliptical, lenticular, and early-type spiral galaxies show a remarkably tight power-law correlation between the mass M_BH of their central supermassive black hole (SMBH) and the number N_GC of globular clusters: M_BH=m*N_GC^(1.08+/-0.04) with m=1.7*10^5 solar masses. Thus, to a good approximation the SMBH mass is the same as the total mass of the globular clusters. Based on a limited sample of 13 galaxies, this relation appears to be a better predictor of SMBH mass (rms scatter 0.2 dex) than the M_BH-sigma relation between SMBH mass and velocity dispersion sigma. The small scatter reflects the fact that galaxies with high globular cluster specific frequency S_N tend to harbor SMBHs that are more massive than expected from the M_BH-sigma relation.

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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