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| NGC 5605 | |
|---|---|
 Intermediate spiral galaxy NGC 5605 | |
| Observation data (J2000 epoch) | |
| Constellation | Libra |
| Right ascension | 14h 25m 07.57s[1] |
| Declination | −13° 09′ 46.8″[1] |
| Redshift | 0.011294[1] |
| Heliocentric radial velocity | 3386 ± 3 km/s[1] |
| Distance | 174.9 ± 12.3 Mly (53.61 ± 3.76 Mpc)[1] |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | (R')SAB(rs)c pec?[1] |
| Size | ~119,000 ly (36.50 kpc) (estimated)[1] |
| Apparent size (V) | 1.5′ × 1.3′[1] |
| Other designations | |
| IRAS 14223-1256, 2MASX J14250757-1309467, MCG -02-37-003, PGC 51492[1] | |
NGC 5605 is an intermediate spiral galaxy in the constellation of Libra. Its velocity with respect to the cosmic microwave background is 3635 ± 18 km/s, which corresponds to a Hubble distance of 174.9 ± 12.3 Mly (53.61 ± 3.76 Mpc).[1] In addition, three non redshift measurements give a distance of 194.72 ± 0.68 Mly (59.700 ± 0.208 Mpc).[2] The galaxy was discovered by German-British astronomer William Herschel on 11 May 1784.[3]
The SIMBAD database lists NGC 5605 as a Seyfert II Galaxy, i.e. it has 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.[4]
Unique Trio of Supernovae
[edit]NGC 5605 is the only galaxy known where three supernovae were visible at the same time.[5][6] The first was SN 2022bn (type Ib, mag. 18.6),[7] discovered on 5 January 2022. The second supernova, SN 2022ec (type II, mag 18.8),[8] was reported on 7 January. The third, SN 2022pv (type II, mag 19.1),[9] was discovered on 13 January.
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 5605". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 1 September 2024.
- ^ "Distance Results for NGC 5605". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 1 September 2024.
- ^ Seligman, Courtney. "NGC 5605". Celestial Atlas. Retrieved 1 September 2024.
- ^ "NGC 5605". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 1 September 2024.
- ^ Bishop, David. "Multiple Supernovae in the same galaxy". Rochester Astronomy. Retrieved 1 September 2024.
- ^ Plait, Phil (12 April 2022). "For the first time, three supernovae are seen at the same time in a single galaxy!". SYFY. NBCUniversal. Retrieved 1 September 2024.
- ^ "SN 2022bn". Transient Name Server. IAU. Retrieved 1 September 2024.
- ^ "SN 2022ec". Transient Name Server. IAU. Retrieved 1 September 2024.
- ^ "SN 2022pv". Transient Name Server. IAU. Retrieved 1 September 2024.
External links
[edit]
Media related to NGC 5605 at Wikimedia Commons- NGC 5605 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
