NGC 4839

NGC 4839
The cD galaxy NGC 4839.
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 57m 24.361s
Declination+27° 29′ 52.14″
Redshift0.02448
Heliocentric radial velocity7913 km/s
Distance380.7 Mly (116.71 Mpc)[1]
Apparent magnitude (B)13.02 [2]
Characteristics
TypecD [1]
Other designations
2MASX J12572435+2729517, UGC 8070, MCG -05-31-025, PGC 44298, CGCG 160-039[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]

NGC 4839 was discovered on April 11, 1785, by William Herschel, but also observed by John Herschel on April 19, 1827, and by Heinrich d'Arrest on May 18, 1862.[4] It is classified as a radio galaxy presenting radio waves.[1]

References

  1. ^ a b c d "Results for object NGC 4839 (NGC 4839)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 25 May 2023.
  2. ^ a b "NGC 4839". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 27 May 2023.
  3. ^ a b c d 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). arXiv:2301.05269. doi:10.3847/1538-4357/acb1b1.
  4. ^ "New General Catalog Objects: NGC 4800 - 4849". cseligman.com. Retrieved 2024-04-28.


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