NGC 5264

{{Short description|Irregular galaxy in the M83 group of galaxies}} {{Infobox galaxy | name = NGC 5264 | image = NGC 5264 - Potw1634a.tif | image_size = 260px | caption = NGC 5264, imaged by the [[Hubble Space Telescope]] | epoch = [[J2000]] | constellation name = [[Hydra (constellation)|Hydra]] | ra = {{RA|13|41|36.683}}<ref name=2MASS>{{cite journal |bibcode=2003yCat.2246....0C |title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) |journal=CDS/ADC Collection of Electronic Catalogues |pages=II/246 |volume=2246 |last1=Cutri |first1=Roc M. |last2=Skrutskie |first2=Michael F. |last3=Van Dyk |first3=Schuyler D. |last4=Beichman |first4=Charles A. |last5=Carpenter |first5=John M. |last6=Chester |first6=Thomas |last7=Cambresy |first7=Laurent |last8=Evans |first8=Tracey E. |last9=Fowler |first9=John W. |last10=Gizis |first10=John E. |last11=Howard |first11=Elizabeth V. |last12=Huchra |first12=John P. |last13=Jarrett |first13=Thomas H. |last14=Kopan |first14=Eugene L. |last15=Kirkpatrick |first15=J. Davy |last16=Light |first16=Robert M. |last17=Marsh |first17=Kenneth A. |last18=McCallon |first18=Howard L. |last19=Schneider |first19=Stephen E. |last20=Stiening |first20=Rae |last21=Sykes |first21=Matthew J. |last22=Weinberg |first22=Martin D. |last23=Wheaton |first23=William A. |last24=Wheelock |first24=Sherry L. |last25=Zacarias |first25=N. |year=2003 |url=https://vizier.u-strasbg.fr/viz-bin/VizieR?-source=II/246 }}</ref> | dec = {{DEC|-29|54|47.25}}<ref name=2MASS/> | z = 0.001594<ref name=ned>{{cite web|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5264&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|title=NED results for object NGC 5264|access-date=25 February 2017|publisher=[[National Aeronautics and Space Administration]] / [[Infrared Processing and Analysis Center]] }}</ref> | h_radial_v = 478 km/s<ref name=ned/> | dist_ly = {{convert|4.545|+/-|0.258|Mpc|Mly|abbr=on|lk=on|order=flip}}<ref name=ned/> | group_cluster = [[Centaurus A/M83 Group]]<br />(M83 subgroup) | type = IB(s)m<ref name=ned/> | size = 11000 × 6500 [[light year|ly]]<br />(3300 × 2000 [[parsec|pc]])<ref name=Lopez-Sanchez/> | stars = 1 billion<ref name=hubble/> | appmag_v = 12.39<ref name=SIMBAD>{{cite simbad|title=NGC 5264|access-date=25 February 2017}}</ref> | appmag_b = 12.96<ref name=SIMBAD/> | absmag_v = | size_v = 2.5{{prime}} × 1.5{{prime}}<ref name=Lopez-Sanchez>{{cite journal|title=The intriguing H I gas in NGC 5253: an infall of a diffuse, low-metallicity H I cloud?|author1=López-Sánchez, Á. R.|author2=Koribalski, B. S.|author3=van Eymeren, J.|author4=Esteban, C.|author5=Kirby, E.|author6=Jerjen, H.|author7=Lonsdale, N.|journal=Monthly Notices of the Royal Astronomical Society|volume=419|issue=2|pages=1051–1069|date=2012|bibcode=2012MNRAS.419.1051L|doi=10.1111/j.1365-2966.2011.19762.x|doi-access=free |arxiv=1109.0806|s2cid=118503447}}</ref> | notes = | names = [[David Dunlap Observatory Catalogue|DDO]] 242, [[Uppsala General Catalogue Addendum|UGCA]] 370, [[Morphological Catalogue of Galaxies|MCG]]-05-32-066, [[Principal Galaxies Catalogue|PGC]] 48467 }}

'''NGC 5264''', also known as '''DDO 242''', is an [[irregular galaxy]] in the [[constellation]] [[Hydra (constellation)|Hydra]]. It is part of the M83 subgroup of the [[Centaurus A/M83 Group]],<ref name=SIMBAD/> located some 15 million [[light year]]s (4.5 [[megaparsec]]s) away.<ref name=ned/> The galaxy was discovered on 30 March 1835 by [[John Herschel]], and it was described as "very faint, pretty large, round, very little brighter middle" by [[John Louis Emil Dreyer]], the compiler of the [[New General Catalogue]].<ref name=cseligman>{{cite web|url=https://cseligman.com/text/atlas/ngc52a.htm#5264|title=New General Catalogue objects: NGC 5250 - 5299|author=Seligman, Courtney|website=cseligman.com|access-date=25 February 2017}}</ref>

NGC 5264 was imaged by the [[Hubble Space Telescope]] in 2016. The galaxy is relatively small: it is a [[dwarf galaxy]], a type of galaxy much smaller than normal [[spiral galaxies]] and [[elliptical galaxies]]. In fact, it is only 11000 [[light years]] (3300 [[parsecs]]) wide at its widest;<ref name=Lopez-Sanchez/> our own galaxy, [[Milky Way]], in comparison, is about ten times larger.<ref>{{cite web |author=Elizabeth Howell |url=http://www.universetoday.com/75691/how-big-is-the-milky-way/ |title=How Big Is The Milky Way? |date=January 20, 2015 |publisher=[[Universe Today]] |archive-url=https://web.archive.org/web/20141015234530/http://www.universetoday.com/75691/how-big-is-the-milky-way/ |archive-date=October 15, 2014 }}</ref> Dwarf galaxies like these usually have about a billion stars. NGC 5264 also is relatively blue-coloured; this is from it [[interacting galaxy|interacting]] with other galaxies, supplying it with gas for [[star formation]].<ref name=hubble>{{cite web|url=https://www.spacetelescope.org/images/potw1634a/|title=An irregular island <nowiki>|</nowiki> ESA/Hubble|date=2016|website=spacetelescope.org|access-date=25 February 2017}}</ref>

==References== {{reflist}}

==External links== * {{Commons category-inline}}

{{DEFAULTSORT:NGC 5264}} [[Category:NGC objects|5264]] [[Category:Principal Galaxies Catalogue objects|048467]] [[Category:Centaurus A/M83 Group]] [[Category:Dwarf irregular galaxies]] [[Category:Hydra (constellation)]] [[Category:UGCA objects]]