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一个超大质量的黑洞在紧的晶状星系NGC 1277中
Remco C E van den Bosch1, Karl Gebhardt, Kayhan Gültekin
1Max-Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany. bosch@mpia.de
Nature
|November 30, 2012
概括
天文学家在银河系NGC 1277中发现了一个超大质量黑洞,占其膨胀质量的59%,挑战了当前的银河系进化模型. 这一发现表明,一些星系可能不遵循典型的黑洞质量缩放关系.
科学领域:
- 天体物理学 天体物理学
- 银河系的进化 银河系的进化
- 黑洞物理学 黑洞物理学
背景情况:
- 大型星系通常是超大质量黑洞 (SMBH) 的宿主,其质量与宿主星系的膨胀相关.
- 这些缩放关系的现有理论包括星系合并和黑洞-星系反.
- SMBH质量通常为恒星膨胀质量的0.1%,NGC 4486B此前的记录为11%.
研究的目的:
- 为了研究紧镜状星系NGC 1277中的中央黑洞的质量.
- 为了确定NGC 1277和类似的紧星系是否偏离已建立的SMBH-星系缩放关系.
- 为完善星系演变的理论模型提供观测数据.
主要方法:
- 对NGC 1277进行了恒星运动观测.
- 根据动力学数据计算了中央超大质量黑洞的质量.
- 观测到其他五个紧的星系,其属性与NGC 1277相似.
主要成果:
- 确定NGC 1277的中心黑洞质量为1.7×10^10太阳质量.
- 在NGC 1277中,SMBH占其膨胀质量的59%,大大超过了以前已知的分数.
- 另外五个紧的星系表现出属性,表明它们也可能是超大质量黑洞的宿主.
结论:
- 与其膨胀相比,NGC 1277拥有一个非常庞大的黑洞,挑战了标准的SMBH星系质量相关性.
- 这些发现表明,紧的星系或盘状星系可能不符合典型的缩放关系.
- 需要进一步的研究来确定这些星系是否代表分布的极端尾部或单独的群体.
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