3C 401

3C 401
3C 401
	3C 401 captured by SDSS
Observation data (J2000 epoch)
Constellation	Draco
Right ascension	19h 40m 25.1s
Declination	+60° 41′ 35″
Redshift	0.201100
Distance	2.348 billion light-years (720 megaparsecs)h−1; 0.73
Apparent magnitude (V)	17.13
Characteristics
Type	G, FR II
Other designations
	LEDA 2605547, 3C 401, 4C 60.29, 6C 193938+603431, 8C 1939+605

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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

^ ^a ^b ^c ^d ^e ^f "NED results for object 3C 401". NASA/IPAC Extragalactic Database. Retrieved 29 March 2012.
^ 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. Bibcode:2000MNRAS.317..120R. doi:10.1046/j.1365-8711.2000.03684.x. Retrieved 30 March 2012.
^ Leahy, J. P.; A. H. Bridle & R. G. Strom. "3CRR Atlas: 3C 401". An Atlas of DRAGNs. Jodrell Bank Centre for Astrophysics. Retrieved 30 March 2012.
^ Chiaberg, Marco; et al. (August 10, 2005). "The Infrared-dominated Jet of 3C 401". The Astrophysical Journal. 629 (1): 100–107. arXiv:astro-ph/0505034. Bibcode:2005ApJ...629..100C. doi:10.1086/431236. S2CID 39185781.

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[ned-1] ^ ^a ^b ^c ^d ^e ^f "NED results for object 3C 401". NASA/IPAC Extragalactic Database. Retrieved 29 March 2012.

[2] 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. Bibcode:2000MNRAS.317..120R. doi:10.1046/j.1365-8711.2000.03684.x. Retrieved 30 March 2012.

[3] Leahy, J. P.; A. H. Bridle & R. G. Strom. "3CRR Atlas: 3C 401". An Atlas of DRAGNs. Jodrell Bank Centre for Astrophysics. Retrieved 30 March 2012.

[4] Chiaberg, Marco; et al. (August 10, 2005). "The Infrared-dominated Jet of 3C 401". The Astrophysical Journal. 629 (1): 100–107. arXiv:astro-ph/0505034. Bibcode:2005ApJ...629..100C. doi:10.1086/431236. S2CID 39185781.

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