- Source: NGC 4869
NGC 4869 is an elliptical galaxy located in the constellation of Coma Berenices. It is located 343 million light years from Earth. The galaxy was discovered by William Herschel in April 1785 but also observed by both John Herschel and Heinrich d'Arrest, in March 1827 and May 1863 respectively. It is a member of the Coma Cluster with a small companion galaxy at a position angle of 325°.
Characteristics
NGC 4869 is classified as a radio galaxy with a faint radio core with two oppositely directed radio jets and a lengthy low-surface brightness tail. It has an estimated γ-ray luminosity of Lγ ≤ 4 x 1039 erg s-1 like NGC 4874. There is also an elongated absorption feature in the galaxy, possibly representing an edge on disk.
NGC 4869 contains a narrow angle tailed radio source. The source is found lying towards the central region of the Coma Cluster by 111 kpc. It shows a mean fractional polarization of 18% at 4.535 GHz and 21% at 8.465 GHz and a large-scale structure that is almost 200 kpc. A characteristic feature of the source, is a sharp bend towards a north direction at 3’5 from the host galaxy's position.
According to a Chandra X-ray image of NGC 4869, a straight collimated jet is seen flaring when traversing a surface brightness edge.
Supermassive black hole
The supermassive black hole in NGC 4869 is estimated to be 1.32 x 108 Mʘ (108.12 Mʘ) based on a study made by Jong-Hak Woo and Urry in 2002.
References
External links
NGC 4869 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
NGC 4869 on SIMBAD