View source for Astronomy:Arp 271

{{Short description|Interacting galaxies in the constellation Virgo}}
{{ Infobox Galaxy
| image = Arp 271.tif
| image_size = 250px
| caption=NGC 5426 (bottom left) and NGC 5427 (top right)
| credit=ESO
| name = Arp 271
| epoch = [[Astronomy:J2000|J2000]]
| ra = {{RA|14|03|25.5}}<ref name="simbad">{{cite web
  | title=SIMBAD Astronomical Database
  | work=Results for Arp 271
  | url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Arp+271
  | access-date=2018-05-22}}</ref>
| dec = {{DEC|-06|02|59}}<ref name="simbad" />
| dist_ly = 127 million [[Astronomy:Light-year|light-year]]s (39 [[Astronomy:Parsec|Mpc]])
| appmag_v = 11.4<ref name="seds">{{cite web
  | title=The Interactive NGC Catalog Online
  | work=Results for NGC 5427
  | url=http://spider.seds.org/ngc/ngc.cgi?5427
  | access-date=2010-09-22}}</ref>
| size_v = 2.5<ref name="seds" />
| constellation name = [[Astronomy:Virgo (constellation)|Virgo]]
| type = SA(s)c pec<ref name=NED>{{cite web|url=https://ned.ipac.caltech.edu/byname?objname=NGC%205426&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1|title=Results for object NGC 5426 (NGC 5426)|work=NASA/IPAC Extragalactic Database|publisher=California Institute of Technology|accessdate=2021-02-18}}</ref> (NGC 5246)<br />SA(s)c pec<ref name=NED2>{{cite web|url=https://ned.ipac.caltech.edu/byname?objname=NGC%205427&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1|title=Results for object NGC 5427 (NGC 5427)|work=NASA/IPAC Extragalactic Database|publisher=California Institute of Technology|accessdate=2021-02-18}}</ref> (NGC 5247)
| radius_ly = 
| absmag_v = 
| notes = 
| names = NGC 5426 & NGC 5427, LEDA 50084, VV 21a, [VV2000c] J140325.9-060150, AGC 540006, 2MASX J14032604-0601509, VV 21, [VV2003c] J140325.9-060150, APG 271, MCG-01-36-003, [CHM2007] LDC 1026 J140326.04-0601509, [VV2006c] J140325.9-060150, 6dFGS gJ140326.1-060151, NVSS J140326-060149, [CHM2007] HDC 850 J140326.04-0601509, [VV98c] J140325.9-060150, IRAS 14008-0547, UGCA 380, UGCA 381 [HB91] 1400-057.
}}

'''Arp 271''' is a pair of similarly sized [[Astronomy:Interacting galaxies|interacting]] spiral galaxies, '''NGC 5426''' and '''NGC 5427''', in the constellation of [[Astronomy:Virgo (constellation)|Virgo]]. It is not certain whether the galaxies are going to eventually collide or not. They will continue interacting for tens of millions of years, creating new stars as a result of the mutual gravitational attraction between the galaxies, a pull seen in the bridge of stars already connecting the two. Located about 130 million light-years away, the Arp 271 pair is about 130,000 light-years across. It was originally discovered in 1785 by William Herschel. It is speculated,<ref>{{Cite web|url=http://www.nasa.gov/mission_pages/hubble/science/milky-way-collide.html|title = NASA's Hubble Shows Milky Way is Destined for Head-On Collision|date = 15 March 2021}}</ref><ref>{{Cite web |url=http://www.nasa.gov/mp4/654254main_v1220j_H264l.mp4 |title=NASA |access-date=2013-11-28 |archive-date=2020-11-12 |archive-url=https://web.archive.org/web/20201112001135/http://www.nasa.gov/mp4/654254main_v1220j_H264l.mp4 |url-status=dead }}</ref> that the [[Astronomy:Milky Way|Milky Way]] will undergo a similar collision in about five billion years with the neighbouring [[Astronomy:Andromeda Galaxy|Andromeda Galaxy]], which is currently located about 2.6 million light-years away.<ref name="eso">{{Cite web|url=http://www.eso.org/public/images/potw1035a/|title=Arp 271 — galaxies drawn together}}</ref>

==Supernovas in NGC 5426==
Two [[Astronomy:Supernova|supernova]]e have been observed in NGC 5426: SN 1991B ([[Astronomy:Type Ia supernova|type&nbsp;Ia]], mag. 16),<ref>[https://www.wis-tns.org/object/1991B Transient Name Server entry for SN 1991B.] Retrieved 30 March 2023.</ref> and SN 2009mz (type Ia, mag. 15.1).<ref>[https://www.wis-tns.org/object/2009mz Transient Name Server entry for SN 2009mz.] Retrieved 30 March 2023.</ref>

==Supernovas in NGC 5427==
Two supernovae have been observed in NGC 5427:  SN 1976D (type Ia, mag. 14.5)<ref>[https://www.wis-tns.org/object/1976D Transient Name Server entry for SN 1976D.] Retrieved 29 March 2023.</ref> and SN 2021pfs (type Ia, mag. 14).<ref>[https://rochesterastronomy.org/sn2021/sn2021pfs.html Astronomy Section of the Rochester Academy of Sciences.] Retrieved 5 January 2023.</ref>

== Gallery ==
<gallery>
VIMOS's last embrace NGC 5426 and NGC 5427.jpg|Arp 271 taken by the [[Engineering:Visible Multi Object Spectrograph|VIMOS]] instrument on [[Organization:European Southern Observatory|ESO]]'s [[Astronomy:Very Large Telescope|Very Large Telescope]].<ref>{{cite web|title=VIMOS's last embrace|url=https://www.eso.org/public/images/potw1821a/|website=www.eso.org|access-date=21 May 2018}}</ref>
</gallery>

==References==
{{reflist}}

==External links==
* [http://www.eso.org/public/images/potw1035a/ Arp 271 — Galaxies Drawn Together], ESO picture of the week.

{{Virgo}}
{{Catalogs|Arp=271}}
{{Sky|14|00|48.3||-05|47|25|190000000}}

{{DEFAULTSORT:Arp 271}}
[[Category:Interacting galaxies]]
[[Category:Arp objects|271]]
[[Category:NGC objects]]
[[Category:Virgo (constellation)]]
[[Category:UGCA objects]]
[[Category:Unbarred spiral galaxies]]



{{Sourceattribution|Arp 271}}