3C 401 Explained

3C 401
Epoch:J2000
Type:G, FR II[1]
Dist Ly:2.348e9ly
Z:0.201100
Appmag V:17.13
Constellation Name:Draco
Names: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), 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]

Notes and References

  1. Web site: NED results for object 3C 401. NASA/IPAC Extragalactic Database. 29 March 2012.
  2. Roche. Nathan. Stephen A. Eales. Optical/ultraviolet morphology and alignment of low-redshift radio galaxies. Monthly Notices of the Royal Astronomical Society. September 2000. 317. 1. 120–140. 30 March 2012. 2000MNRAS.317..120R . 10.1046/j.1365-8711.2000.03684.x . free.
  3. Web site: Leahy. J. P.. 3CRR Atlas: 3C 401. An Atlas of DRAGNs. Jodrell Bank Centre for Astrophysics. 30 March 2012. A. H. Bridle. R. G. Strom. amp.
  4. Chiaberg. Marco. The Infrared-dominated Jet of 3C 401. The Astrophysical Journal. August 10, 2005. 629. 1 . 100–107. 10.1086/431236. astro-ph/0505034 . 2005ApJ...629..100C . 39185781 . etal.