NGC 7343
| NGC 7343 | |
|---|---|
 NGC 7343 imaged by the Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Pegasus |
| Right ascension | 22h 38m 37.8618s[1] |
| Declination | +34° 04′ 17.307″[1] |
| Apparent magnitude (V) | 13.5 |
| Apparent magnitude (B) | 14.4 |
| Surface brightness | 13.26 mag/arcsec2 |
| Characteristics | |
| Size | ~90,500 ly (27.75 kpc) (estimated)[1] |
| Other designations | |
| IRAS 22363+3348, UGC 12129, MCG +06-49-059, PGC 69391, CGCG 514-082[1] | |
NGC 7343 is a barred spiral galaxy located in the constellation Pegasus. Its velocity relative to the cosmic microwave background is 7150 ± 24 km/s, which corresponds to a Hubble distance of 105.5 ± 7.4 Mpc (∼344 million ly). NGC 7343 was discovered by American astronomer Truman Safford in 1866. It was independently rediscovered by French astronomer Édouard Stephan on September 27, 1873.
The luminosity class of NGC 7343 is II-III and it has a broad HI line. In addition, it is also a LINER galaxy, a galaxy whose nucleus presents an emission spectrum characterized by broad lines of weakly ionized atoms. To date, eight non-redshift measurements yield a distance of 65.787 ± 44.256 Mpc (∼215 million ly), which is outside the Hubble distance values.[2][3][1][4][5]
Supernova
[edit]The supernova SN 1974J (type Ia, mag. 15.5) was discovered in NGC 7343 on 9 October 1974 by Italian astronomer Leonida Rosino.[6][7]
See also
[edit]References
[edit]- ^ a b c d e "Results for object NGC 7343". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 7 December 2024.
- ^ "Your NED Search Results, Distance Results for NGC 7343". ned.ipac.caltech.edu. Retrieved 2024-08-11.
- ^ "Les données de "Revised NGC and IC Catalog by Wolfgang Steinicke", NGC 7300 à 7399" (in French). Site WEB du cours d'astronomie du Cégep de Valleyfield.
- ^ Courtney Seligman. "Celestial Atlas Table of Contents, NGC 7300 à 7349". Retrieved December 5, 2024..
- ^ "NGC 7343 sur HyperLeda". Retrieved December 5, 2024.
- ^ Rosino, L. (1974). "Supernova in NGC 7343". International Astronomical Union Circular (2707): 1. Bibcode:1974IAUC.2707....1R.
- ^ "SN 1974J". Transient Name Server. IAU. Retrieved 7 December 2024.
