| NGC 7124 | |
|---|---|
 The spiral galaxy NGC 7124 | |
| Observation data (J2000 epoch) | |
| Constellation | Indus |
| Right ascension | 21h 48m 05.3679s[1] |
| Declination | −50° 33′ 53.979″[1] |
| Redshift | 0.017251[1] |
| Heliocentric radial velocity | 5172 ± 8 km/s[1] |
| Distance | 240.0 ± 16.8 Mly (73.57 ± 5.16 Mpc)[1] |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | SB(rs)bc[1] |
| Size | ~206,200 ly (63.21 kpc) (estimated)[1] |
| Apparent size (V) | 2.8′ × 1.1′[1] |
| Other designations | |
| IRAS 21447-5047, 2MASX J21480540-5033549, PGC 67375, ESO 237- G 002[1] | |
NGC 7124 is a large spiral galaxy in the constellation of Indus. Its velocity with respect to the cosmic microwave background is 4988 ± 15 km/s, which corresponds to a Hubble distance of 240.0 ± 16.8 Mly (73.57 ± 5.16 Mpc).[1] However, nine non-redshift measurements give a much closer distance of 191.56 ± 4.26 Mly (58.733 ± 1.306 Mpc).[2] It was discovered by British astronomer John Herschel on 8 July 1834.[3]
NGC 7124 is classified as 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 7124: SN 2023pwl (type Ia, mag 16.7) was discovered by ATLAS on 19 August 2023.[4]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k l "Results for object NGC 7124". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 6 August 2024.
- ^ "Distance Results for NGC 7124". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 15 December 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7124". Celestial Atlas. Retrieved 15 December 2024.
- ^ "SN 2023pwl". Transient Name Server. IAU. Retrieved 15 December 2024.
External links
[edit]
Media related to NGC 7124 at Wikimedia Commons- NGC 7124 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
