NGC 1448
Galaxy in the constellation Horologium
From Wikipedia, the free encyclopedia
NGC 1448 is an unbarred spiral galaxy seen nearly edge-on in the constellation Horologium. It is at a distance of 55 million light years from Earth. It was discovered by British astronomer John Herschel on 24 October 1835.[2] Herschel observed the galaxy again on 14 December 1835, resulting in it being listed twice in the New General Catalogue, as NGC 1448 and as NGC 1457.[2]
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| NGC 1448 | |
|---|---|
NGC 1448 by the Very Large Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Horologium |
| Right ascension | 03h 44m 31.8804s[1] |
| Declination | −44° 38′ 41.15″[1] |
| Redshift | 0.003896[1] |
| Heliocentric radial velocity | 1,168±2 km/s[1] |
| Distance | 56.5 ± 7.6 Mly (17.3 ± 2.3 Mpc)[1] |
| Apparent magnitude (V) | 10.7 |
| Characteristics | |
| Type | SAcd [1] |
| Size | ~142,800 ly (43.78 kpc) (estimated)[1] |
| Apparent size (V) | 7.6′ × 1.7′[1] |
| Other designations | |
| ESO 249- G 016, IRAS 03428-4448, NGC 1457, MCG -07-08-005, PGC 13727[1] | |
From the spectral analysis of SN 2001el, over a dozen diffuse interstellar bands were discovered in NGC 1448 – one of the few cases that these bands were observed outside of the Milky Way. However, the bands were significantly weaker at SN 2003hn.[3]
In January 2017 it was announced that evidence for a supermassive black hole in NGC 1448 had been found in the center of the galaxy.[4]
The galaxy belongs to the NGC 1433 group,[5] part of the Doradus cloud of galaxies.
Supernovae
Six supernovae have been observed in NGC 1448:
- SN 1983S (Type II, mag. 14.5) was discovered by Robert Evans on 6 October 1983.[6][7]
- SN 2001el (Type Ia, mag. 14.5) was discovered by Berto Monard on 17 September 2001.[8][9] It reached magnitude 12.3, making it the brightest supernova of 2001.[10]
- SN 2003hn (Type II, mag. 14.1) was discovered by Robert Evans on 25 August 2003.[11][12]
- SN 2014df (Type Ib, mag. 14) was discovered by Berto Monard on 3 June 2014.[13][14]
- SN 2020zbv (Type IIP, mag. 18.83) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 10 November 2020.[15]
- SN 2021pit (Type Ia, mag. 13.5) was discovered by ASAS-SN on 10 June 2021.[16]
The galaxy in different wavelengths
NGC 1448 taken by the Hubble Space Telescope's Wide Field Camera 3.[17]
NGC 1448 in optical light and X-rays by NuSTAR and the Chandra X-ray Observatory
NGC 1448 in ultraviolet by GALEX
