|Observation data (J2000 epoch)|
|Right ascension||3h 19m 51.5s|
|Declination||+41° 34′ 25″|
|Type||Lenticular galaxy, peculiar galaxy|
|Apparent magnitude (V)||14.7|
|PGC 012434, LGG 088|
|See also: Galaxy, List of galaxies|
NGC 1277 is a lenticular galaxy in the constellation of Perseus. It is located approximately 220 million light years from the Milky Way and has a visual magnitude of 14.7. It was discovered on December 4, 1875 by Lawrence Parsons, 4th Earl of Rosse.
Supermassive black hole?
According to one group, who made observations using the Hobby-Eberly Telescope at Texas's McDonald Observatory, the motions of the stars near the center of this galaxy imply the presence of a black hole with a mass of about 17 billion solar masses, equivalent to 14% of the total stellar mass of the galaxy. This would make the black hole in NGC 1277 one of the largest known, in relation to the mass of its host galaxy.
A second study, based on the same data and published the following year, reached a very different conclusion: the black hole is not overmassive, and indeed models with no black hole at all were found to provide reasonably good fits to the data.
- "NASA/IPAC Extragalactic Database". Results for NGC 1277. Retrieved November 29, 2012.
- van den Bosch, Remco C. E. et al. (29 Nov 2012). "An over-massive black hole in the compact lenticular galaxy NGC 1277". Nature 491 (7426): 729–731. arXiv:1211.6429. Bibcode:2012Natur.491..729V. doi:10.1038/nature11592. Retrieved 29 Nov 2012.
- Emsellem, Eric (Aug 2013). "Is the black hole in NGC 1277 really overmassive?". Monthly Notices of the Royal Astronomical Society 433 (3): 1862–1870. arXiv:1305.3630. Bibcode:2013MNRAS.433.1862E. doi:10.1093/mnras/stt840.