Astronomy:UGC 1840

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UGC 1840
UGC 1840 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension 02h 23m 08.4268s[1]
Declination+41° 22′ 20.031″[1]
Redshift0.018096
Helio radial velocity5,420 km/s
Distance258.5 Mly (79.1 Mpc)
Characteristics
TypePeculiar
Size~131,100 ly (40.20 kpc) (estimated)
Notable featuresCollisional ring galaxy
Other designations
IRAS 02200+4108, Arp 145, MCG+07-06-002, PGC 9060 & 9062, HFLLZOA F264, V Zw 229

UGC 1840, also known as Arp 145, are a pair of interacting galaxies located 250 million light-years away from the Solar System in the Andromeda constellation.[2] The earliest known reference to the pair of galaxies is in part 2 of the Morphological Catalogue of Galaxies, published in 1964, where it is listed as MCG +07-06-002.[3]

Made up of two galaxies, UGC 1840 NED01 (PGC 9060)[4] and UGC 1840 NED02 (PGC 9062),[5] the two galaxies had recently collided with each other[6] in which the elliptical galaxy has penetrated through the spiral galaxy's nucleus leaving a hole in its middle, thus forming a ring galaxy.[7][8] With a diameter of 1.3 arc minutes, close to 100,000 thousand light-years, they are roughly the same size as the Milky Way.[9] Both galaxies are listed as Arp 145 in the Atlas of Peculiar Galaxies which was created by Halton Arp.[10][11] They fall under the category of objects that have emanating material and both classified as galaxies that have ring systems.

References

  1. ↑ 1.0 1.1 "Results for object NGC UGC 1840 (UGC 1840)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=UGC%201840&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2024-11-13. 
  2. ↑ "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=Arp+145&extend=yes&out_csys=Equatorial&out_equinox=B1950.0&obj_sort=RA+or+Longitude&zv=z&zv_breaker=10000.0. 
  3. ↑ Vorontsov-Vel'Yaminov, B. A.; Arkhipova, V. P. (1964). "Morphological catalogue of galaxies. Part 2". Morphological Catalogue of Galaxies C02. Bibcode: 1964MCG...C02....0V. 
  4. ↑ "NED Search Results for UGC 1840 NED02". https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=267475&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1. 
  5. ↑ "NED Search Results for UGC 1840 NED01". https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=267476&objname=31&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1. 
  6. ↑ "Collisional Ring Galaxies - P.N. Appleton & C. Struck-Marcell". https://ned.ipac.caltech.edu/level5/Sept01/Appleton/frames.html. 
  7. ↑ "Mantrap Skies Astronomical Image Catalog: ARP145". https://images.mantrapskies.com/catalog/ARP-GALAXIES/ARP145/index.htm. 
  8. ↑ Chatterjee, T. K. (1984-11-01). "The Formation of Ring Galaxies". Astrophysics and Space Science 106 (2): 309–339. doi:10.1007/BF00650358. ISSN 0004-640X. Bibcode: 1984Ap&SS.106..309C. https://ui.adsabs.harvard.edu/abs/1984Ap&SS.106..309C. 
  9. ↑ Iovene, Salvatore. "UGC1840 (Arp 145) Irregular galaxy" (in en). https://www.astrobin.com/3cqtep/. 
  10. ↑ "David's Astronomy - ARP Peculiar Galaxy Objects". https://www.astro-richweb.net/astro/arp_objects.htm#ARP_145. 
  11. ↑ Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series 14: 1. doi:10.1086/190147. Bibcode: 1966ApJS...14....1A. 



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