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NGC 2708

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(Redirected from NGC 2727) Galaxy in the constellation Hydra
NGC 2708
The spiral galaxy NGC 2708
Observation data (J2000 epoch)
ConstellationHydra
Right ascension08 56 08.0688
Declination−03° 21′ 36.467″
Redshift0.006698
Heliocentric radial velocity2008 ± 5 km/s
Distance111.4 ± 7.9 Mly (34.15 ± 2.41 Mpc)
Group or clusterNGC 2708 Group (LGG 164)
Apparent magnitude (V)12.0
Characteristics
TypeSAB(s)b pec?
Size~98,800 ly (30.29 kpc) (estimated)
Apparent size (V)2.7′ × 1.4′
Other designations
IRAS 08535-0309, 2MASX J08560804-0321363, NGC 2727, MCG +00-23-015, PGC 25097, CGCG 005-034

NGC 2708 is a spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 2315 ± 22 km/s, which corresponds to a Hubble distance of 34.15 ± 2.41 Mpc (∼111 million light-years). It was discovered by German-British astronomer William Herschel on 6 January 1785. This galaxy was also observed by British astronomer John Herschel on 12 March 1826, and later listed as NGC 2727.

The SIMBAD database lists NGC 2708 as a Seyfert II galaxy, i.e. a galaxy with a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.

One supernova has been observed in NGC 2708: SN 2023bee (type Ia, mag. 17.2621) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 1 February 2023.

NGC 2708 Group

According to A.M. Garcia, NGC 2708 is the namesake of the four member NGC 2708 group (also known as LGG 164). The other three galaxies are: NGC 2695, NGC 2699, and NGC 2706.

See also

References

  1. ^ "Results for NGC 2708". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 8 August 2024.
  2. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 2708". Celestial Atlas. Retrieved 10 September 2024.
  3. "NGC 2708". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 September 2024.
  4. "SN 2023bee". Transient Name Server. IAU. Retrieved 10 September 2024.
  5. Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.

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