NGC 2708
In this article, we will explore the topic of NGC 2708 from different perspectives, with the aim of providing a broader and more complete vision of its importance and impact on our environment. We will learn about its history, its implications in today's society, as well as its possible future developments. From a multidisciplinary approach, we will approach NGC 2708 from different angles, including cultural, economic, technological and scientific aspects. Through a detailed and exhaustive analysis, we hope to offer the reader a comprehensive view of NGC 2708, inviting them to reflect and participate in the discussion on this fascinating topic.
| NGC 2708 | |
|---|---|
 The spiral galaxy NGC 2708 | |
| Observation data (J2000 epoch) | |
| Constellation | Hydra |
| Right ascension | 08h 56m 08.0688s[1] |
| Declination | −03° 21′ 36.467″[1] |
| Redshift | 0.006698 [1] |
| Heliocentric radial velocity | 2008 ± 5 km/s[1] |
| Distance | 111.4 ± 7.9 Mly (34.15 ± 2.41 Mpc)[1] |
| Group or cluster | NGC 2708 Group (LGG 164) |
| Apparent magnitude (V) | 12.0[1] |
| Characteristics | |
| Type | SAB(s)b pec?[1] |
| Size | ~98,800 ly (30.29 kpc) (estimated)[1] |
| Apparent size (V) | 2.7′ × 1.4′[1] |
| Other designations | |
| IRAS 08535-0309, 2MASX J08560804-0321363, NGC 2727, MCG +00-23-015, PGC 25097, CGCG 005-034[1] | |
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).[1] It was discovered by German-British astronomer William Herschel on 6 January 1785.[2] This galaxy was also observed by British astronomer John Herschel on 12 March 1826, and later listed as NGC 2727.[2]
The SIMBAD database lists NGC 2708 as a Seyfert II galaxy,[3] 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.[4]
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.[5]
See also
References
- ^ a b c d e f g h i j k "Results for NGC 2708". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 8 August 2024.
- ^ a b Seligman, Courtney. "New General Catalogue Objects: NGC 2708". Celestial Atlas. Retrieved 10 September 2024.
- ^ "NGC 2708". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 September 2024.
- ^ "SN 2023bee". Transient Name Server. IAU. Retrieved 10 September 2024.
- ^ 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.
External links
Media related to NGC 2708 at Wikimedia Commons- NGC 2708 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
