NGC 262
| NGC 262 | |
|---|---|
|
NGC 262 as seen from the CTIO Observatory in Chile taken using three filtered multiwavelength images. The galaxy is the bright object to the left of center. | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| Right ascension | 00h 48m 47.14154s[1] |
| Declination | +31° 57′ 25.08″[1] |
| Distance | 202 million light-years (62 Mpc) |
| Type | S0-a |
| Apparent dimensions (V) | 1,1' × 1,1' |
| Apparent magnitude (V) | 13.1 |
| Other designations | |
| 2MASX J00484711+3157249, UGC 499, Markarian 348 [1] | |
NGC 262 (also known as Markarian 348) is a huge lenticular galaxy in the cluster LGG 14.[1] It is a Seyfert 2 lenticular galaxy (S0a) located 202 million light years away in the constellation Andromeda. It was discovered in September 17, 1885 by Lewis A. Swift.
Size
This galaxy has an apparent diameter of approximately 2.6 million light-years (1.1'). It holds approximately more than 15 trillion stars. NGC 262 was tidally disturbed by the gravitational forces of smaller galaxies, which resulted in its tremendous size.[2]
NGC 262 is very unusual, since it is 10 times larger than a regular spiral galaxy of its type.[3] According to Morris and Wannier, NGC 262 is surrounded by a huge cloud of neutral hydrogen[3] that is probably caused by the tidal stripping of smaller galaxies. The cloud has an apparent mass of approximately 50 billion solar masses[3] at a distance of 88 kiloparsecs (287,000 light years) [3] from the nucleus of NGC 262 and extending up to 300 kiloparsecs (1 million light years) away.[3] The cloud is spiral shaped with at least one arm, and possibly another one extending throughout the galaxy.
References
- 1 2 3 4 "SIMBAD query result". Basic data for NGC 262.
- ↑ "The New York Times". DISTANT GALAXY FOUND TO BE LARGEST KNOWN.
- 1 2 3 4 5 "The optical properties of the unusual galaxy Markarian 348". The Astrophysical Journal 238: 11–12. May 15, 1980. Bibcode:1980ApJ...238L..11H. doi:10.1086/183246.