3C 285
3C 285 | |
---|---|
Distance | 323 megaparsecs (1.05×109 ly) h−1 0.73[2] |
Apparent magnitude (V) | 16.23[1] |
Characteristics | |
Type | rG, Rad, AGN, G, GiG, QSO[1] G, FR II[2] |
Apparent size (V) | 0.417' x 0.242'[1] |
Other designations | |
DA 343, LEDA 46625, 3C 285, 4C +42.37, 2MASX J13211781+4235153 |
3C 285 is a
3C 285 is the brightest member of a small galaxy group. Its morphology is peculiar, with an S-shaped envelope that points to another galaxy of the group, located to the northwest. A gas filament 26 arcseconds long extends towards that galaxy.[4] In optical and ultraviolet observations the galaxy features dust lanes, two across the galaxy and one perpendicular to them that also obscures part of the nucleus. Along the edges of the dust lanes knots of elevated ultraviolet emission indicate locations of where new stars are formed.[5] In the centre of 3C 285 lies a supermassive black hole whose mass is estimated to be 107.70±0.10 (40-63 million) M☉ based on stellar velocity dispersion.[6]
When observed in radiowaves, 3C 285 has two lobes with filamentary structures in them, and a
Gallery
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3C 285 by the Hubble Space Telescope
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3C 285 with its galaxy group
References
- ^ Centre de Données astronomiques de Strasbourg. Retrieved 2 June 2015.
- ^ a b c d "NED results for object 3C 285". NASA/IPAC Extragalactic Database. Retrieved 2 June 2015.
- doi:10.1086/517997.
- doi:10.1086/191301.
- doi:10.1086/338823.
- .
- doi:10.1086/173103.
- .
External links