UGC 1840

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UGC 1840
UGC 1840 HST.jpg
UGC 1840 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Andromeda
Right ascension 02h 23m 08.4268s [1]
Declination +41° 22′ 20.031″ [1]
Redshift 0.018096
Heliocentric radial velocity 5,420 km/s
Distance 258.5 Mly (79.1 Mpc)
Characteristics
Type Peculiar
Size~131,100  ly (40.20  kpc) (estimated)
Notable featuresCollisional ring galaxy
Other designations
IRAS 02200+4108, 2MASX J02231142+4122047, Arp 145, MCG +07-06-002, PGC 9060 & 9062, CGCG 538-056, 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] [ unreliable source? ]

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.

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<span class="mw-page-title-main">NGC 3745</span> Galaxy in the constellation Leo

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NGC 5098 are a binary pair of distant galaxies located in Canes Venatici constellation. They are made up of one Type E elliptical galaxy, PGC 46529 or NGC 5098 NED01 located east and one Type ES-0 lenticular galaxy, PGC 46515 or NGC 5098 NED02 located west. Both galaxies are located 559 million light-years away from the Solar System and were discovered on April 29, 1827, by John Herschel.

References

  1. 1 2 "Results for object NGC UGC 1840 (UGC 1840)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2024-11-13.
  2. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-22.
  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". ned.ipac.caltech.edu. Retrieved 2024-04-22.
  5. ↑ "NED Search Results for UGC 1840 NED01". ned.ipac.caltech.edu. Retrieved 2024-04-22.
  6. ↑ "Collisional Ring Galaxies - P.N. Appleton & C. Struck-Marcell". ned.ipac.caltech.edu. Retrieved 2024-04-22.
  7. ↑ "Mantrap Skies Astronomical Image Catalog: ARP145". images.mantrapskies.com. Retrieved 2024-04-22.
  8. ↑ Chatterjee, T. K. (1984-11-01). "The Formation of Ring Galaxies". Astrophysics and Space Science. 106 (2): 309–339. Bibcode:1984Ap&SS.106..309C. doi:10.1007/BF00650358. ISSN   0004-640X.
  9. ↑ Iovene, Salvatore. "UGC1840 (Arp 145) Irregular galaxy". AstroBin. Retrieved 2024-04-22.
  10. ↑ "David's Astronomy - ARP Peculiar Galaxy Objects". www.astro-richweb.net. Retrieved 2024-04-22.
  11. ↑ Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
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