• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >A black-hole mass measurement from molecular gas kinematics in NGC4526
【24h】

A black-hole mass measurement from molecular gas kinematics in NGC4526

机译：NGC4526中基于分子气体运动学的黑洞质量测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The masses of the supermassive black holes found in galaxy bulges are correlated with a multitude of galaxy properties, leading to suggestions that galaxies and black holes may evolve together. The number of reliably measured black-hole masses is small, and the number of methods for measuring them is limited, holding back attempts to understand this co-evolution. Directly measuring black-hole masses is currently possible with stellar kinematics (in early-type galaxies), ionized-gas kinematics (in some spiral and early-type galaxies) and in rare objects that have central maser emission. Here we report that by modelling the effect of a black hole on the kinematics of molecular gas it is possible to fit interferomet-ric observations of CO emission and thereby accurately estimate black-hole masses. We study the dynamics of the gas in the early-type galaxy NGC 4526, and obtain a best fit that requires the presence of a central dark object of 4.5_(-3.1)~(+4.2) × 10~8 solar masses (3σ confidence limit). With the next-generation millimetre-wavelength interferometers these observations could be reproduced in galaxies out to 75 megaparsecs in less than 5 hours of observing time. The use of molecular gas as a kinematic tracer should thus allow one to estimate black-hole masses in hundreds of galaxies in the local Universe, many more than are accessible with current techniques.
机译：在星系凸起中发现的超大质量黑洞的质量与众多星系性质相关，从而导致有人提出星系和黑洞可能一起进化的建议。可靠测量的黑洞质量数量很少，并且测量黑洞质量的方法数量有限，这阻碍了人们理解这种共同进化的尝试。目前，可以通过恒星运动学（在早期类型的星系中），电离气体运动学（在某些螺旋形和早期类型的星系中）以及在具有中心maser发射的稀有物体中直接测量黑洞质量。在这里，我们报告说，通过对分子气体运动学中黑洞的影响进行建模，可以拟合二氧化碳排放的干涉测量结果，从而准确估算黑洞质量。我们研究了早期型星系NGC 4526中的气体动力学，并获得了一个最佳拟合，该拟合要求存在中心暗物体4.5 _（-3.1）〜（+4.2）×10〜8太阳质量（3σ置信限）。使用下一代毫米波干涉仪，这些观测结果可以在不到5个小时的观察时间内再现到75兆秒的星系中。因此，将分子气体用作运动学示踪剂，应该可以使人们估算出本地宇宙中数百个星系中的黑洞质量，而黑洞质量远远超过了目前的技术。

著录项

  • 来源
    《Nature》 |2013年第7437期|328-330|共3页
  • 作者

    Timothy A. Davis; Martin Bureau; Michele Cappellari; Marc Sarzi; Leo Blitz;

  • 作者单位

    European Southern Observatory, Ka rl-Schwarzschild-Strasse 2,85748 Garching-bei-Munchen, Germany;

    Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford 0X1 3RH, UK;

    Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford 0X1 3RH, UK;

    Centre for Astrophysics Research, University of Hertfordshire, Hatfield, Herts AL1 9AB, UK;

    Department of Astronomy, University of California, Berkeley, California 94720, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号