NGC 4697 (also known as Caldwell 52) is an elliptical galaxy some 40 to 50 million light-years away in the constellation Virgo. It is a member of the NGC 4697 Group, a group of galaxies also containing NGC 4731 and several generally much smaller galaxies [3] This group is about 55 million light-years away; it is one of the many Virgo II Groups, which form a southern extension of the Virgo Supercluster of galaxies.[3]

NGC 4697
NGC 4697 HST 10003 R850 B475.png
NGC 4697 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 12h 48m 35.9s[1]
Declination−05° 48′ 03″[1]
Redshift1241 ± 1 km/s[1]
Distance~ 38 Mly[1] / ~ 50 Mly[2]
Apparent magnitude (V)10.97[1]
Characteristics
TypeE6[1]
Apparent size (V)4′.4 × 2′.8[2]
Other designations
Caldwell 52, UGCA 300, MCG -01-33-010, PGC 043276[1]
See also: Galaxy, List of galaxies

The distance to NGC 4697 is not known with high precision: measurements vary from 28 to 76 million light-years.[1] According to the NASA Extra-galactic Database, the average is about 38 million light-years;[1] according to SIMBAD, about 50 million light-years.[2]

The supermassive black hole at the core of NGC 4697 has a mass of 1.3+0.18
−0.17
×108 M
as measured from Atacama Large Millimeter Array observations of the rotation of the central gas disk.[4]

ReferencesEdit

  1. ^ a b c d e f g h i "NED results for object NGC 4697". NASA/IPAC Extragalactic Database. Retrieved 2010-11-28.
  2. ^ a b c "NGC 4697". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-11-28.
  3. ^ a b "The Virgo II Groups". Atlas of the Universe. Retrieved 2010-11-28.
  4. ^ Davis, T. A.; Bureau, M.; Onishi, K.; Cappellari, M.; Iguchi, S.; Sarzi, M. (2017). "WISDOM Project - II. Molecular gas measurement of the supermassive black hole mass in NGC 4697". Monthly Notices of the Royal Astronomical Society. 468 (4): 4675. arXiv:1703.05248. Bibcode:2017MNRAS.468.4675D. doi:10.1093/mnras/stw3217.

External linksEdit