Arp 273

Arp 273
Image taken by the NASA/ESA Hubble Space Telescope shows Arp 273, a pair of interacting galaxies.
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension02h 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, 2MASX J02212870+3922326, Arp 273, UGC 1810, MCG +06-06-023, PGC 8961, VV 323, 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]

Arp 273 zoom sequence.

References

  1. ^ a b c "Arp 273". SIMBAD Astronomical Database. Retrieved 2011-04-20.
  2. ^ "NASA/IPAC Extragalactic Database". Retrieved 2018-06-27.
  3. ^ "Results for object NGC UGC 1810 (UGC 1810)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-28.
  4. ^ "Results for object NGC UGC 1813 (UGC 1813)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-28.
  5. ^ "Interacting galaxies Arp 273". National Optical Astronomy Observatory. 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. Retrieved 2011-04-21.
  7. ^ "NASA's Hubble Celebrates 21st Anniversary with "Rose" of Galaxies". HubbleSite. 2011-04-20. Retrieved 2011-04-21.
  8. ^ "A galactic rose highlights Hubble's 21st anniversary". physorg.com. 2011-04-21. Retrieved 2011-04-21.

External links

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