Astronomy:NGC 4697
| NGC 4697 | |
|---|---|
 NGC 4697 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 48m 35.9s[1] |
| Declination | −05° 48′ 03″[1] |
| Redshift | 1241 ± 1 km/s[1] |
| Distance | ~ 38 Mly[1] / ~ 50 Mly[2] |
| Apparent magnitude (V) | 10.97[1] |
| Characteristics | |
| Type | E6[1] |
| Apparent size (V) | 4.4′ × 2.8′[2] |
| Other designations | |
| Caldwell 52, UGCA 300, MCG -01-33-010, PGC 043276[1] | |
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]
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]
One supernova has been observed in NGC 4697: SN 2018imd (type Ia, mag. 15.5).[5]
Gallery
NGC 4697 by the Sloan Digital Sky Survey
NGC 4697 from the Hubble Space Telescope.
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References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NED results for object NGC 4697". NASA/IPAC Extragalactic Database. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+4697&extend=no.
- ↑ 2.0 2.1 2.2 "NGC 4697". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4697.
- ↑ 3.0 3.1 "The Virgo II Groups". Atlas of the Universe. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+4697.
- ↑ 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. doi:10.1093/mnras/stw3217. Bibcode: 2017MNRAS.468.4675D.
- ↑ Transient Name Server entry for SN 2018imd. Retrieved 23 March 2023.
External links
- NGC 4697 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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