| Markarian 231 | |
|---|---|
.jpg) Hubble Space Telescope image of Markarian 231 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 12h 56m 14.23410s[1] |
| Declination | +56° 52′ 25.2386″[1] |
| Redshift | 0.04147[2] |
| Heliocentric radial velocity | 12173 km/s[2] |
| Distance | 581 Mly, 178 Mpc |
| Apparent magnitude (V) | 13.84[3] |
| Characteristics | |
| Type | Sc/quasar |
| Other designations | |
| UGC 8058, Mrk 231, Mkn 231, Markarian 231, MCG+10-19-004, ZW VII 490, PGC 44117 | |
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Markarian 231 (UGC 8058) is a Type-1 Seyfert galaxy that was discovered in 1969 as part of a search of galaxies with strong ultraviolet radiation. It contains the nearest known quasar.[4] Markarian 231 is located about 581 million light years away from Earth, in the constellation of Ursa Major.
- ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b "Markarian 231". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-30.
- ^ Véron-Cetty, M.-P.; Véron, P. (2010). "A catalogue of quasars and active nuclei". Astronomy and Astrophysics. 518 (13th ed.): A10. Bibcode:2010A&A...518A..10V. doi:10.1051/0004-6361/201014188.
- ^ Veilleux, S.; Meléndez, M.; Tripp, T. M.; Hamann, F.; Rupke, D. S. N. (2016-06-27). "THE COMPLETE ULTRAVIOLET SPECTRUM OF THE ARCHETYPAL "WIND-DOMINATED" QUASAR MRK 231: ABSORPTION AND EMISSION FROM A HIGH-SPEED DUSTY NUCLEAR OUTFLOW". The Astrophysical Journal. 825 (1): 42. arXiv:1605.00665. Bibcode:2016ApJ...825...42V. doi:10.3847/0004-637x/825/1/42. ISSN 0004-637X.