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] |
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.
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.
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] |
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.
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.