NGC 4273 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2727 ± 24 km/s, which corresponds to a Hubble distance of 131.2 ± 9.3 Mly (40.23 ± 2.84 Mpc).[1] However, 20 non-redshift measurements give a distance of 94.72 ± 4.68 Mly (29.040 ± 1.435 Mpc).[2] It was discovered by German-British astronomer William Herschel on 17 April 1786.[3]
| NGC 4273 | |
|---|---|
 Barred spiral galaxy NGC 4273 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 19m 56.0407s[1] |
| Declination | +05° 20′ 36.497″[1] |
| Redshift | 0.007942[1] |
| Heliocentric radial velocity | 2381 ± 2 km/s[1] |
| Distance | 94.72 ± 4.68 Mly (29.040 ± 1.435 Mpc)[1] |
| Group or cluster | NGC 4235 group |
| Apparent magnitude (V) | 11.9[1] |
| Characteristics | |
| Type | SB(s)c[1] |
| Size | ~68,900 ly (21.12 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.5′[1] |
| Other designations | |
| IRAS 12173+0537, 2MASX J12195606+0520361, UGC 7380, MCG +01-32-008, PGC 39738, CGCG 042-028[1] | |
According to A.M. Garcia, NGC 4273 is one of the galaxies in the NGC 4235 group (also known as LGG 281). This galaxy group contains at least 29 members, of which 18 appear in the New General Catalogue and 4 in the Index Catalogue.[4]
Supernovae
editTwo supernovae have been observed in NGC 4273. SN 1936A (type II, mag. 14.5) was discovered by Edwin Hubble and Glenn Moore on 21 January 1936.[5] [Note: Many sources incorrectly cite the discovery date of SN 1936A as 2 January 1936.] SN 2008N (type II, mag. 17.8) was discovered by Alex Filippenko, D. Winslow, and W. Li on 17 January 2008.[6]
See also
editReferences
edit- ^ a b c d e f g h i j k "Results for object NGC 4273". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 22 November 2024.
- ^ "Distance Results for NGC 4273". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 22 November 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 4273". Celestial Atlas. Retrieved 22 November 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.
- ^ Hubble, E.; Moore, G. (1936). "A Super-Nova in the Virgo Cluster". Publications of the Astronomical Society of the Pacific. 48: 108. doi:10.1086/124669.
- ^ "SN 2008N". Transient Name Server. IAU. Retrieved 22 November 2024.
External links
edit
Media related to NGC 4273 at Wikimedia Commons- NGC 4273 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
