| 3C 171 | |
|---|---|
 3C 171 by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Lynx |
| Right ascension | 06h 55m 14.7s[1] |
| Declination | +54° 08′ 89″[1] |
| Redshift | 0.238400[2] |
| Distance | 930 megaparsecs (3.0×109 ly) h−1 0.73[2] |
| Apparent magnitude (V) | 19.08[1] |
| Characteristics | |
| Type | Sy2, Rad, AGN, QSO, G[1] G, FR II, Sy 2[2] |
| Other designations | |
| LEDA 2817570, 3C 171, 4C +54.11, QSO B0651+542 | |
3C 171 is a Seyfert galaxy located in the constellation Lynx, classfied as a radio galaxy, containing an extended emission-line region.[3][4] It is also a relatively isolated galaxy, not belonging to any other rich galaxy clusters.[5]
The inner regions of 3C 171 is said to be similar to an ordinary Fanaroff-Riley Class 2, but instead of radio lobes, it contains low-surface brightness plumes.[4] Using the multi-radio-frequency study, the plumes of 3C 171 are shown to flow in a reverse direction from both the primary and secondary hotspots, found separated. In one of the plumes located north-west, the region shows enhanced brightness, making it a quasi-hotspot.[6] Further evidence also points the emission lines in 3C 171 are made up of plasma, hinting the gas might be cooling.[7]
- ^ a b c d "Query : 3C 171". Simbad. Centre de Données astronomiques de Strasbourg. Retrieved 2 June 2015.
- ^ a b c "NED results for object 3C 171". NASA/IPAC Extragalactic Database. Retrieved 2 June 2015.
- ^ Clark, N. E.; Axon, D. J.; Tadhunter, C. N.; Robinson, A.; O'Brien, P. (1998-02-01). "Jet-induced Shocks in 3C 171: An Intermediate-Redshift Analog of High-Redshift Radio Galaxies". The Astrophysical Journal. 494 (2): 546–566. Bibcode:1998ApJ...494..546C. doi:10.1086/305225. ISSN 0004-637X.
- ^ a b Hardcastle, M. J. (2003-02-21). "Probing the extended emission-line region in 3C 171 with high-frequency radio polarimetry". Monthly Notices of the Royal Astronomical Society. 339 (2): 360–366. arXiv:astro-ph/0209612. Bibcode:2003MNRAS.339..360H. doi:10.1046/j.1365-8711.2003.06102.x. ISSN 0035-8711.
- ^ McNamara, B. R.; Sarazin, C. L.; Jannuzi, B. T. (1994-12-01). "Radio-Aligned Blue Lobes in the Nearby Radio Galaxy 3C 171". American Astronomical Society Meeting Abstracts. 185: 109.09. Bibcode:1994AAS...18510909M.
- ^ Blundell, Katherine M. (1996-11-01). "Evidence for widely separated primary and secondary hotspots in 3C 171". Monthly Notices of the Royal Astronomical Society. 283 (2): 538–542. Bibcode:1996MNRAS.283..538B. doi:10.1093/mnras/283.2.538. ISSN 0035-8711.
- ^ Heckman, T. M.; van Breugel, W. J. M.; Miley, G. K. (1984-11-01). "Emission-line gas associated with the radio lobes of the high-luminosity radiosource 3C 171". The Astrophysical Journal. 286: 509–516. Bibcode:1984ApJ...286..509H. doi:10.1086/162626. hdl:1887/6468. ISSN 0004-637X.