Astronomy:NGC 4839
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Short description: Galaxy in the constellation Coma
| NGC 4839 | |
|---|---|
 The cD galaxy NGC 4839. | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 12h 57m 24.361s |
| Declination | +27° 29′ 52.14″ |
| Redshift | 0.02448 |
| Helio radial velocity | 7913 km/s |
| Distance | 380.7 Mly (116.71 Mpc)[1] |
| Apparent magnitude (B) | 13.02 [2] |
| Characteristics | |
| Type | cD [1] |
| Other designations | |
| UGC 8070, MCG-05-31-025[2] | |
NGC 4839 is a type-cD galaxy located within the rich Coma cluster of galaxies.[1] The galaxy is part of the NGC 4839 galaxy group of which it is the brightest galaxy.[3]
The NGC 4839 group appears to be merging with the Coma cluster.[3] However it is unclear if the group is on its initial infall or if it has passed through the cluster once already.[3] A 2023 paper argued that the distribution of globular clusters within the galaxy supported the galaxy being on its second infall.[3]
References
- ↑ 1.0 1.1 1.2 "Results for object NGC 4839 (NGC 4839)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%204839&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1.
- ↑ 2.0 2.1 "NGC 4839". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4839.
- ↑ 3.0 3.1 3.2 3.3 Oh , Seong-A ; Lee , Myung Gyoon; Jang , In Sung (13 February 2023 ). "Globular Clusters in NGC 4839 Falling into Coma: Evidence for the Second Infall?". The Astrophysical Journal 944 (1 ). doi:10.3847/1538-4357/acb1b1.
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