Astronomy:NGC 3974
| NGC 3974 | |
|---|---|
 NGC 3974 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Crater |
| Right ascension | 11h 55m 40.174s[1] |
| Declination | −12° 01′ 38.431″[1] |
| Redshift | 0.019133[1] |
| Helio radial velocity | 5736 ± 32 km/s[1] |
| Distance | 293.4 ± 20.7 Mly (89.96 ± 6.34 Mpc)[1] |
| Apparent magnitude (V) | 13.4[1] |
| Characteristics | |
| Type | (R')SB0/a?(r)[1] |
| Size | ~80,500 ly (24.67 kpc) (estimated)[1] |
| Apparent size (V) | 1.2′ × 1.1′[1][1] |
| Other designations | |
| MCG-02-31-001, PGC 37452[1] | |
NGC 3974 is a lenticular galaxy in the constellation of Crater. Its velocity with respect to the cosmic microwave background is 6099 ± 41 km/s, which corresponds to a Hubble distance of 89.96 ± 6.34 Mpc (~293 million light-years).[1] However, one non-redshift measurement gives a much closer distance of 56.6 Mpc (185 Mly).[2] It was discovered by British astronomer John Herschel on 9 March 1828.[3]
NGC 3974 is possibly a LINER galaxy, i.e. it has a type of nucleus that is defined by its spectral line emission which has weakly ionized or neutral atoms, while the spectral line emission from strongly ionized atoms is relatively weak.[1]
One supernova has been observed in NGC 3974: SN 2024gra (Type Ia, mag. 18.8625) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 16 April 2024.[4]
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 "Results for object NGC 3974". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3974.
- ↑ "Distance Results for NGC 3974". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3974.
- ↑ Celestial Atlas entry for NGC 3974. Retrieved 4 August 2024.
- ↑ "SN 2024gra". IAU. https://www.wis-tns.org/object/2024gra.
External links
- NGC 3974 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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