| 词条 | NGC 1156 |
| 释义 |
| image = NGC1156-hst-R658GB625.jpg | image_size = 300px |caption = NGC 1156 imaged by the Hubble Space Telescope | credit= NASA/ESA | name = NGC 1156 | epoch = J2000 | type = IB(s)m[1] | ra = {{RA|02|59|42.2}}[1] | dec = {{DEC|+25|14|14}}[1] | dist_ly = | z = 375 ± 1 km/s[1] | appmag_v = 12.3[1] | size_v = 3′.3 × 2′.5[1] | constellation name = Aries | notes = | names = UGC 2455,[1] PGC 11329[1] }} NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type {{Not a typo|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. 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.[2] External links
References1. ^1 2 3 4 5 6 7 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 1156 | url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+1156#ObjNo1 | accessdate=2006-11-27 }} {{galaxy-stub}}2. ^{{Cite news | last1 = Ho | first1 = Luis C. | last2 = Filippenko | first2 = Alexei V. | last3 = Sargent | first3 = Wallace L. W. | title = A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies | date = October 1997 | periodical = Astrophysical Journal Supplement | volume = 112 | pages = 315–390 | url = http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997ApJS..112..315H | doi = 10.1086/313041 | postscript = |arxiv = astro-ph/9704107 |bibcode = 1997ApJS..112..315H }} 5 : Dwarf irregular galaxies|Aries (constellation)|NGC objects|UGC objects|Principal Galaxies Catalogue objects |
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