View source for Astronomy:NGC 3312

{{Short description|Spiral galaxy in the constellation Hydra}}
{{Infobox Galaxy
| name = NGC 3312
| image = File:NGC 3312 legacy dr10.jpg
| image_size = 250px
| caption = [[Astronomy:Dark Energy Spectroscopic Instrument#DESI Legacy Imaging Surveys|legacy surveys]] image of NGC 3312
| epoch = [[Astronomy:J2000|J2000]]
| type = SA(s)b pec?, [[Astronomy:Jellyfish galaxy|Jellyfish]], LINER<ref name="ned">{{cite web
  | title=NASA/IPAC Extragalactic Database
  | work=Results for NGC 3312
  | url=http://nedwww.ipac.caltech.edu/
  | access-date=2018-05-29}}</ref>
| ra = {{RA|10|37|02.5}}<ref name="ned" />
| dec = {{DEC|-27|33|54}}<ref name="ned" />
| dist_ly = {{convert|59.4|Mpc|Mly|abbr=on|lk=on|order=flip}}<ref name="ned" />
| group_cluster = [[Astronomy:Hydra Cluster|Hydra Cluster]] 
| h_radial_v = 2886 km/s<ref name="ned" />
| z = 0.009627<ref name="ned" />  
| appmag_v = 12.68<ref name="ned" />
| size_v = 3.3 x 1.3<ref name="ned" />
| constellation name = [[Astronomy:Hydra (constellation)|Hydra]]
| names = IC 629, ESO 501-43, AM 1034-271, IRAS 10346-2718, MCG -4-25-39, PGC 31513<ref name="ned" />
|size=~{{convert|170,000|ly|kpc|abbr=on|lk=on|order=flip}} (estimated)<ref>{{Cite book|url=https://books.google.com/books?id=JY0wDwAAQBAJ&pg=PA281|title=The Cambridge Photographic Atlas of Galaxies|last1=König|first1=Michael|last2=Binnewies|first2=Stefan|date=2017-09-07|publisher=Cambridge University Press|isbn=978-1-107-18948-5|language=en}}</ref> 
}} 
'''NGC 3312''' is a large<ref name=":1" /> and highly inclined<ref name=":2" /> [[Spiral galaxy|spiral galaxy]]<ref>{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+3312&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&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=Your NED Search Results|website=ned.ipac.caltech.edu|access-date=2018-05-31}}</ref> located about 194 million [[Astronomy:Light-year|light-year]]s away<ref>{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3312|title=NED Query Results for NGC 3312|website=ned.ipac.caltech.edu|language=en-US|access-date=2018-05-31}}</ref> in the constellation [[Astronomy:Hydra (constellation)|Hydra]].<ref>{{Cite web|url=http://spider.seds.org/ngc/revngcic.cgi?NGC3312|title=Revised NGC Data for NGC 3312|website=spider.seds.org|access-date=2018-05-31}}</ref> The galaxy was discovered by astronomer [[Biography:John Herschel|John Herschel]] on March 26, 1835. It was later rediscovered by astronomer [[Biography:Guillaume Bigourdan|Guillaume Bigourdan]] on February 26, 1887. NGC 3312 was later listed and equated with IC 629 because the two objects share essentially the same celestial coordinates.<ref>{{Cite web|url=http://www.astronomy-mall.com/Adventures.In.Deep.Space/NGC%203000%20-%203999%20(11-30-17).htm|title=Astronomy-Mall: Adventures In Deep Space NGC objects 3001–3999|last=Gottlieb|first=Steve|website=Astronomy-Mall|access-date=2018-04-27}}</ref><ref>{{Cite web|url=https://cseligman.com/text/atlas/ngc33.htm#3311|title=New General Catalog Objects: NGC 3300 – 3349|website=cseligman.com|language=en-US|access-date=2018-05-04}}</ref> NGC 3312 is the largest [[Spiral galaxy|spiral galaxy]]<ref name=":1">{{Cite journal|last=Huchtmeier|first=W. K.|date=July 1990|title=Detection of CO emission in Hydra 1 cluster galaxies|journal=NASA Conference Publication|volume=3084|pages=386–388|bibcode=1990NASCP3084..386H}}</ref> in the [[Astronomy:Hydra Cluster|Hydra Cluster]]<ref name=":1" /><ref name=":3">{{Cite journal|last=Richter|first=O.-G.|date=February 1989|title=The Hydra I cluster of galaxies. V – A catalogue of galaxies in the cluster area|journal=Astronomy and Astrophysics Supplement Series|volume=77|pages=237–256|bibcode=1989A&AS...77..237R}}</ref> and is also classified as a LINER galaxy.<ref>{{Cite news|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+3312&submit=submit+id|title=NGC 3312|access-date=2018-05-31}}</ref><ref name=":2">{{Cite web|url=http://dc.zah.uni-heidelberg.de/sasmirala/q/prod/qp/NGC%203312|title=Sasmirala object pages|website=dc.zah.uni-heidelberg.de|access-date=2018-05-31}}</ref>

==Physical characteristics==
NGC 3312 appears to be highly distorted with sharp dust lanes. There are sharp filamentary extensions to the north and an internal ringlike structure in the galaxy. The interstellar matter in the galaxy also appears highly disturbed. These features caused astronomer De Vaucouleurs to suggest that NGC 3312 was distorted by the giant [[Astronomy:Elliptical galaxy|elliptical galaxies]] [[Astronomy:NGC 3309|NGC 3309]] and [[Astronomy:NGC 3311|NGC 3311]] which are the dominant ellipticals in the Hydra Cluster. However, NGC 3309 and NGC 3311 are too distant and their relative velocity differences too large for either elliptical to cause the filamentary extensions observed in NGC 3312. It is more likely that NGC 3312 is interacting with the [[Astronomy:Intracluster medium|intracluster medium]] causing ram-pressure stripping which is stripping the [[Astronomy:Interstellar medium|interstellar medium]] of the galaxy. This may have caused the filamentary extensions observed in NGC 3312 as evidenced by the location of the galaxy near the cluster core.<ref name=":0">{{Cite journal|last=Gallagher|first=J. S.|date=July 15, 1978|title=Possible optical evidence for ram-pressure-sweeping in the Hydra I cluster of galaxies|journal=The Astrophysical Journal|language=en|volume=223|pages=386–390|doi=10.1086/156273|issn=0004-637X|bibcode=1978ApJ...223..386G}}</ref> As a result, this galaxy can be considered part of a rare class of galaxies, known as [[Astronomy:Jellyfish galaxy|jellyfish galaxies]].

==Star formation==
Although NGC 3312's morphological structure resembles that of [[Astronomy:Anemic galaxy|anemic galaxies]], its mean surface-brightness profile hints that star formation may be quite active. The northwest filamentary extension from NGC 3312  has high surface brightness and has the knotted texture characteristic of active star-forming regions in spiral arms. Also, the internal dust lane of NGC 3312 is ringed with bright condensations.<ref name=":0" />

==Radio source==
NGC 3312 contains an unresolved strong radio source in its core with a strength of 27 mJy and radio emission in the disk with a strength of 24 mJy mostly being confined to the spiral arms of the galaxy or regions of star formation.<ref>{{Cite journal|last1=McMahon|first1=P. M.|last2=van Gorkom|first2=J. H.|last3=Richter|first3=O.-G.|last4=Ferguson|first4=H. C.|date=February 1992|title=H I imaging of NGC 3312 and NGC 3314a – A foreground group to the Hydra cluster?|journal=The Astronomical Journal|language=en|volume=103|pages=399|doi=10.1086/116068|issn=0004-6256|bibcode=1992AJ....103..399M}}</ref>

== See also ==
* [[Astronomy:List of NGC objects (3001–4000)|List of NGC objects (3001–4000)]]
* [[Astronomy:Messier 90|Messier 90]]
* [[Astronomy:NGC 4921|NGC 4921]]

== References ==
{{reflist}}

==External links==
{{WikiSky}}


{{Catalogs|PGC=31513|NGC=3312}}
{{Sky|10|37|02.5||−27|33|54|190000000}}

{{DEFAULTSORT:NGC 3312}}
[[Category:Hydra Cluster]]
[[Category:Hydra (constellation)]]
[[Category:Peculiar galaxies]]
[[Category:Unbarred spiral galaxies]]
[[Category:NGC objects|3312]]
[[Category:Principal Galaxies Catalogue objects|31513]]
[[Category:IC objects]]

{{Sourceattribution|NGC 3312}}