Astronomy:Arp 273

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Short description: Pair of interacting galaxies in the constellation Andromeda
Arp 273
UGC 1810 and UGC 1813 in Arp 273 (captured by the Hubble Space Telescope).jpg
Image taken by the NASA/ESA Hubble Space Telescope shows Arp 273, a pair of interacting galaxies.
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension 02h 21m 28.703s[1]
Declination+39° 22′ 32.65″[1]
Distance300 million ly
Apparent magnitude (V)13.7[2]
Characteristics
TypeSA(s)b pec[3] + SB(s)a pec[4]
Other designations
Z 523-28, Z 0218.4+3909, CGPG 0218.4+3909, ZW V 223, KPG 64a, UZC J022128.6+392231, Arp 273, UGC 1810, MCG+06-06-023, PGC 8961, VV 323a[1]
The location of Arp 273 (circled in blue)

Arp 273 is a pair of interacting galaxies, 300 million light years away in the constellation Andromeda. It was first described in the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966.[5] The larger of the spiral galaxies, known as UGC 1810, is about five times more massive than the smaller galaxy.[6] It has a disc that is tidally distorted into a rose-like shape by the gravitational pull of the companion galaxy below it, known as UGC 1813. The smaller galaxy shows distinct signs of active star formation at its nucleus,[7] and "it is thought that the smaller galaxy has actually passed through the larger one."[8]

File:Arp 273 Zoom Sequence.ogv

References

  1. 1.0 1.1 1.2 "Arp 273". SIMBAD Astronomical Database. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Arp+273. Retrieved 2011-04-20. 
  2. "NASA/IPAC Extragalactic Database". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=Arp+273&extend=no&list_limit=5#BasicData_0. Retrieved 2018-06-27. 
  3. "Results for object NGC UGC 1810 (UGC 1810)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=UGC%201810&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2021-02-28. 
  4. "Results for object NGC UGC 1813 (UGC 1813)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=UGC%201813&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2021-02-28. 
  5. "Interacting galaxies Arp 273". National Optical Astronomy Observatory. http://www.noao.edu/image_gallery/html/im0011.html. Retrieved 2011-04-21. 
  6. Usher, Oli; Villard, Ray (2011-04-20). "A galactic rose highlights Hubble's 21st anniversary". Archived from the original on 16 May 2011. https://web.archive.org/web/20110516024825/http://spacetelescope.org/news/heic1107/. Retrieved 2011-04-21. 
  7. "NASA's Hubble Celebrates 21st Anniversary with "Rose" of Galaxies". HubbleSite. 2011-04-20. http://hubblesite.org/newscenter/archive/releases/2011/11/video/b/. Retrieved 2011-04-21. 
  8. "A galactic rose highlights Hubble's 21st anniversary". physorg.com. 2011-04-21. http://www.physorg.com/news/2011-04-galactic-rose-highlights-hubble-21st.html. Retrieved 2011-04-21. 

External links