NGC 1156

From Wikipedia, the free encyclopedia
Jump to: navigation, search
NGC 1156
NGC1156-hst-R658GB625.jpg
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]
See also: Galaxy, List of galaxies

NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type ibm. In the Catalogue of Named Galaxies, it is called Germinans Arietis, or the budding galaxy, after its star-forming regions.[2] 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.

The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found.

It has a H II nucleus.[3]

External links[edit]

References[edit]

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 1156. Retrieved 2006-11-27. 
  2. ^ Bodifee, Gerard. "Catalogue of One Thousand Named Galaxies" (PDF). Retrieved 21 May 2017. 
  3. ^ Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement. 112. pp. 315–390. doi:10.1086/313041.