NGC 3199

{{Short description|H II region in the constellation Carina}}

{{Infobox nebula

|name = NGC 3199

|image = NGC3199 - ESO - Potw1831a.jpg

|caption = VLT Survey Telescope

|credit = ESO

|type = emission

|epoch = J2000

|subtype =

|class =

|ra = {{RA|10|16|32.8}}{{cite simbad|title=NGC 3199|access-date=17 February 2018}}

|dec = {{DEC|-57|56|02}}

|dist_ly =

|dist_pc =

|dist_z =

|appmag_v =

|appdia =

|size_v =

|constellation = Carina

|radius_ly =

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|notes =

|names = GUM 28, RCW 48

}}

NGC 3199{{Cite web |url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+3199 |title=Your NED Search Results |website=nedwww.ipac.caltech.edu |access-date=2018-04-18}}{{Cite web |url=http://spider.seds.org/ngc/revngcic.cgi?NGC3199 |title=Revised NGC Data for NGC 3199 |website=spider.seds.org |access-date=2018-04-18}} is an emission nebula in the constellation Carina. It is commonly known as the Banana Nebula{{cite book |last1=Chadwick |first1=Stephen |last2=Cooper |first2=Ian |title=Imaging the Southern Sky |date=11 December 2012 |publisher=Springer |isbn=978-1461447498 |page=75}} or Carina's Smile.{{cite book|last=Stoyan|first=Ronald|last2=Schurig|first2=Stephan|title=interstellarum Deep Sky Atlas|publisher=Cambridge University Press; Oculum-Verlag GmbH|publication-place=Erlangen|date=2014|isbn=978-1-107-50338-0|oclc=920437579|url=http://www.deep-sky-atlas.com/}} The object was discovered in 1826 by the Scottish astronomer James Dunlop.{{Cite web|url=http://cseligman.com/text/atlas/ngc31a.htm#3199|title=NGC Objects: NGC 3150 - 3199|access-date=14 February 2019|website=cseligman.com|author=Seligman, Courtney}} It was thought to be the bow shock around the central star, WR 18, an especially hot and luminous Wolf–Rayet star; however, it was determined that the nebula formed due to the composition of local space, not because of the star's movement.{{cite journal|bibcode=2017ApJ...846...76T|doi=10.3847/1538-4357/aa8554|arxiv=1708.02177|title=Hot Gas in the Wolf–Rayet Nebula NGC 3199|journal=The Astrophysical Journal|volume=846|issue=1|pages=76|year=2017|last1=Toalá|first1=J. A|last2=Marston|first2=A. P|last3=Guerrero|first3=M. A|last4=Chu|first4=Y.-H|last5=Gruendl|first5=R. A|s2cid=119076796 |doi-access=free }}