NGC 3195
{{short description|Planetary nebula in the constellation Chamaeleon}}
{{Infobox nebula
| image = 300px
| caption = A Hubble Space Telescope (HST) image of NGC 3195.
Credit: HST/NASA/ESA.
| name = NGC 3195
| epoch = J2000
| constellation = Chamaeleon
| type = Planetary
| dist_ly = {{convert|1975|pc|ly|order=flip|abbr=on|lk=on}}
| size_v = {{val|1.33|ul=arcminute}}
| radius_ly =
| absmag_v =
| notes =
| names = Caldwell 109, Hen 2-44, Sa2-57, PK 296-20.1, PN G296.6-20.0, ESO 19-2
}}
NGC 3195 (also known as Caldwell 109) is a planetary nebula located in the southern constellation of Chamaeleon. Discovered by Sir John Herschel in 1835, this 11.6 apparent magnitude planetary nebula is slightly oval in shape, with dimensions of 40×35 arc seconds, and can be seen visually in telescopic apertures of {{Convert|10.5|cm}} at low magnifications.
Spectroscopy reveals that NGC 3195 is approaching Earth at {{Convert|17|km/s}}, while the nebulosity is expanding at around {{Convert|40|km/s}}. The central star is listed as >15.3V or 16.1B magnitude. An analysis of Gaia data suggests that the central star is a binary system.{{cite journal|doi=10.1051/0004-6361/202140288|title=Towards a more complete sample of binary central stars of planetary nebulae with Gaia|year=2021|last1=Chornay|first1=N.|last2=Walton|first2=N. A.|last3=Jones|first3=D.|last4=Boffin|first4=H. M. J.|last5=Rejkuba|first5=M.|last6=Wesson|first6=R.|journal=Astronomy & Astrophysics|volume=648|pages=A95|arxiv=2101.01800|bibcode=2021A&A...648A..95C|s2cid=230770301}} Distance is estimated at 1.7 kpc.
References
{{reflist|refs=
| title=NGC 3195
| access-date=2007-04-17}}
| title=Deep-Sky Companions: The Messier Objects
| first1=Stephen James | last1=O'Meara
| publisher=Cambridge University Press
| year=2014 | isbn=978-1107018372 | page=499
| url=https://books.google.com/books?id=MMfxDAAAQBAJ&pg=PA499 }}
| title=Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates
| last1=Kerber | first1=F. | last2=Mignani | first2=R. P.
| last3=Guglielmetti | first3=F. | last4=Wicenec | first4=A.
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=408 | issue=3 | pages=1029–1035 | date=September 2003
| doi=10.1051/0004-6361:20031046 | doi-access=free
| bibcode=2003A&A...408.1029K }}
| display-authors=1 | last1=Stanghellini | first1=L.
| last2=Shaw | first2=R. A. | last3=Villaver | first3=E.
| title=The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale
| journal=The Astrophysical Journal
| volume=689 | pages=194–202 | year=2008
| issue=1 | arxiv=0807.1129 | bibcode=2008ApJ...689..194S
| doi=10.1086/592395 | s2cid=119257242 }}
| url=https://cseligman.com/text/atlas/ngc31a.htm#3195
| title=New General Catalogue objects: NGC 3150 - 3199
| last=Seligman | first=Courtney | website=cseligman.com
| access-date=27 September 2019 }}
}}
External links
- {{commonscat-inline}}
- [https://web.archive.org/web/20070930031224/http://www.spacetelescope.org/images/html/opo9738c12.html The Hubble European Space Agency Information Centre: pictures and information on NGC 3195]
{{Ngc35}}
{{Caldwell catalogue}}
{{Chamaeleon}}
{{DEFAULTSORT:NGC 3195}}