| タイトル | Evidence for a supermassive object in the nucleus of the galaxy M87 from SIT and CCD area photometry |
| 著者（英） | Wilson, C. P.; Westphal, J. A.; Kristian, J.; Young, P. J.; Landauer, F. P. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|Hale Observatories |
| 発行日 | 1978-05-01 |
| 言語 | eng |
| 内容記述 | Results are presented for broadband three-color (BVR) photometric observations of the peculiar elliptical radio galaxy M87, which were obtained with digital two-dimensional SIT and CCD detector systems on the Palomar 60-in. and 200-in. telescopes. The observations and the reduction procedures for the digital data are outlined, the luminosity profile of M87 is given, and a nuclear luminosity spike is found to be centered within 0.02 arcsec of the center of M87. Attempts are made to fit various theoretical models to the luminosity profile, and a satisfactory fit is obtained between the observed profile and a model involving a massive black hole in the galactic nucleus. A model-independent dynamical analysis of the central regions is performed which indicates that the nucleus of M87 contains a supermassive object of about 5 billion solar masses with a radius of no more than 100 pc and an M/L ratio of at least 60. The possible nature of this object is considered, and it is concluded that M87 is probably the most plausible candidate for a massive black hole in a galactic nucleus. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 78A33930 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/432964 |
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