NGC 1156
Dwarf irregular galaxy in Aries
From Wikipedia, the free encyclopedia
NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type ibm. It is considered a Magellanic-type irregular. The galaxy has a larger than average core, and contains zones of contra-rotating gas. The counter-rotation is thought to be the result of tidal interactions with another gas rich galaxy some time in the past.
| NGC 1156 | |
|---|---|
NGC 1156 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Aries |
| Right ascension | 02h 59m 42.2s[1] |
| Declination | +25° 14′ 14″[1] |
| Redshift | 375 ± 1 km/s[1] |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | IB(s)m[1] |
| Apparent size (V) | 3.3′ × 2.5′[1] |
| Other designations | |
| UGC 2455,[1] PGC 11329[1] | |
It has a H II nucleus.[2]
The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found.
