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HD 253


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Stellar dynamics in the nuclei of M31 and M32 - Evidence for massive black holes?
New kinematic data based on the calcium IR triplet lines are presentedthat define rotation and velocity disersion profiles for the nuclei ofM31 and M32 with high accuracy. New dynamical models are used todetermine the mass distribution of the centers of these galaxies withmuch greater reliability than in the past. The results demonstrate thatthe nuclei rotate very rapidly and have very large mass-to-light ratios,recalling model A of Ostriker and Tremaine (1982) in the case of M31.The results strongly suggest the presence of massive black holes in thenuclei of both galaxies.

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观测天体数据

星座:雙魚座
右阿森松:00h07m19.44s
赤纬:+01°39'54.3"
视星:8.949
距离:121.507 天文距离
右阿森松适当运动:-84.1
赤纬适当运动:-4.8
B-T magnitude:9.714
V-T magnitude:9.013

目录:
适当名称   (Edit)
HD 1989HD 253
TYCHO-2 2000TYC 1-1339-1
USNO-A2.0USNO-A2 0900-00029320
HIPHIP 604

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