The supermassive black hole in NGC 4486a detected with SINFONI at the Very Large Telescope

The supermassive black hole in NGC 4486a detected with SINFONI at the Very Large Telescope
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甚大望远镜用 SINFONI 探测到 NGC 4486a 中的超大质量黑洞

DOI:
10.1111/j.1365-2966.2007.11949.x
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发表时间:
2007
影响因子:
4.8
通讯作者:
Davies
Davies
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Saglia;Thomas;Bender;Pannella;Gebhardt;Davies

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欧洲南方天文台甚大望远镜的近红外积分场摄谱仪SINFONI为研究中心超大质量黑洞打开了一扇新的窗口。凭借与哈勃太空望远镜类似的近红外空间分辨率和穿透尘埃的能力,它提供了探索低质量黑洞的可能性,到目前为止,很少有黑洞质量是用恒星动力学测量的。利用SINFONI在K波段以≈0.1 arcsec的空间分辨率观测了低亮度椭圆星系NGC 4486a的中心区域。用最大惩罚似然法测量了恒星的运动学,考虑了CO吸收带头周围的区域。我们使用史瓦西轨道叠加法确定了黑洞质量M•=(1.25+ 0.75−0.79)× 107 M⊙(90%置信限),包括完整的二维空间信息。这一质量与该关系的预测一致,加强了其在σ下端的有效性。
The near-infrared (IR) integral field spectrograph SINFONI at the European Southern Observatory Very Large Telescope opens a new window for the study of central supermassive black holes. With a near-IR spatial resolution similar to Hubble Space Telescope optical and the ability to penetrate dust, it provides the possibility to explore the low-mass end of the relation where so far very few black hole masses were measured with stellar dynamics. With SINFONI, we observed the central region of the low-luminosity elliptical galaxy NGC 4486a at a spatial resolution of≈ 0.1 arcsec in the K band. The stellar kinematics were measured with a maximum penalized likelihood method considering the region around the CO absorption band heads. We determined a black hole mass of M•=(1.25+ 0.75− 0.79)× 107 M⊙(90 per cent confidence limit) using the Schwarzschild orbit superposition method including the full two-dimensional spatial information. This mass agrees with the predictions of the relation, strengthening its validity at the lower σ end.
DOI: 10.1086/425651
发表时间: 2004-09
期刊: The Astrophysical Journal
影响因子: --
作者:
D. Pierini;K. Gordon;A. Witt;G. J. M. Mpe;Garching;Germany;S. Observatory;Tucson;Az;
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DOI: 10.1007/b82980
发表时间: 2003
期刊: The Astronomical Journal
影响因子: --
作者:
P. Shaver;L. Dilella;Á. Giménez
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DOI: 10.1111/j.1365-2966.2004.08072.x
发表时间: 2004-06
影响因子: 4.8
作者:
J. Thomas;R. Saglia;R. Bender;D. Thomas;K. Gebhardt;J. Magorrian;D. Muenchen;Mpe Garching;U. T. A. Austin;U. Oxford;U. Michigan
通讯作者: J. Thomas;R. Saglia;R. Bender;D. Thomas;K. Gebhardt;J. Magorrian;D. Muenchen;Mpe Garching;U. T. A. Austin;U. Oxford;U. Michigan