Astronomy:3C 401
| 3C 401 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Draco |
| Right ascension | 19h 40m 25.1s[1] |
| Declination | +60° 41′ 35″[1] |
| Redshift | 0.201100[1] |
| Distance | 2.348 billion light-years (720 megaparsecs)h−10.73 |
| Apparent magnitude (V) | 17.13[1] |
| Characteristics | |
| Type | G, FR II[1] |
| Other designations | |
| LEDA 2605547, 3C 401, 4C 60.29, 6C 193938+603431, 8C 1939+605 | |
3C 401 is a powerful radio galaxy located in the constellation Draco. It is near the center of a rich cluster of galaxies and dominates the cluster. That is, it is the type-cD galaxy of its cluster. It has a double nucleus, indicating that it is merging with another galaxy.[2]
3C 401 is classified as a Fanaroff and Riley class II radio source (FR II),[1] but has characteristics of both types of sources. FR II radio sources are brightest at the ends of their radio lobes while FR I sources are brightest toward their centers. 3C 401 has hot spots at the ends of its two extended radio lobes, but also has a bright one-sided jet like a FR I source.[3] The spectra of this jet is also intermediate between the spectra of jets in the two types of sources.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "NED results for object 3C 401". NASA/IPAC Extragalactic Database. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=3C401&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ Roche, Nathan; Stephen A. Eales (September 2000). "Optical/ultraviolet morphology and alignment of low-redshift radio galaxies". Monthly Notices of the Royal Astronomical Society 317 (1): 120–140. doi:10.1046/j.1365-8711.2000.03684.x. Bibcode: 2000MNRAS.317..120R. http://resolver.scholarsportal.info/resolve/00358711/v317i0001/120_omaaolrg. Retrieved 30 March 2012.
- ↑ Leahy, J. P.; A. H. Bridle. "3CRR Atlas: 3C 401". An Atlas of DRAGNs. Jodrell Bank Centre for Astrophysics. http://www.jb.man.ac.uk/atlas/object/3C401.html.
- ↑ Chiaberg, Marco (August 10, 2005). "The Infrared-dominated Jet of 3C 401". The Astrophysical Journal 629 (1): 100–107. doi:10.1086/431236. Bibcode: 2005ApJ...629..100C.
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