从NGC452626中的分子气体动力学测量黑洞质量
Timothy A Davis1, Martin Bureau, Michele Cappellari
1European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching-bei-München, Germany. tdavis@eso.org
Nature
|February 1, 2013
概括
研究人员开发了一种使用分子气体动态测量超大质量黑洞质量的新方法. 这种技术准确地估计了黑洞的质量,扩大了可用于共同进化研究的星系数量.
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:
- 超大质量黑洞 (SMBH) 的质量与星系属性相关,这表明共进化.
- 目前测量SMBH质量的方法数量和范围有限,阻碍了共同进化研究.
- 现有的技术包括恒星和电离气体动力学,以及巨星辐射,这些技术并不普遍适用.
研究的目的:
- 开发和验证一种用于准确估计SMBH质量的新方法.
- 扩大可以可靠测量SMBH质量的星系样本.
- 为了研究星系及其中心黑洞的共同进化.
主要方法:
- 模拟中央黑洞对分子气体运动学的引力影响.
- 使用这种动态模型,对一氧化碳 (CO) 排放进行插入式干扰测量观测.
- 将该方法应用于早期类型星系NGC 4526以获得其中心黑洞质量.
主要成果:
- 该研究成功估计了NGC 4526中的SMBH质量为4.5(+4.2)(-3.1) ×10^8太阳质量.
- 分子气体动力学方法提供了准确的黑洞质量估计.
- 未来使用下一代干扰仪进行观测,可以在几个小时内测量数百个本地星系的质量.
结论:
- 分子气体动力学为估计SMBH质量提供了一个强大的新工具.
- 这种技术显著增加了可用于研究黑洞-星系共同进化的星系数量.
- 该方法有望推动我们对整个局部宇宙银河系和黑洞演变的理解.
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