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Arp 87 (also known as NGC 3808) is a pair of two interacting galaxies, NGC 3808A and NGC 3808B. They are situated in the Leo constellation. NGC 3808A, the brighter, is a peculiar spiral galaxy,[2] while NGC 3808B is an irregular galaxy.[3]

NGC 3808A
A visible light image of NGC 3808A (right) and 3808B (left).
Observation data (J2000 epoch)
ConstellationLeo
Right ascension11h 40m 44.4s[1]
Declination+22° 26 16[1]
Redshift0.023726[1]
Helio radial velocity7113 km/s[1]
Apparent magnitude (V)14.1[1]
Characteristics
TypeNGC 3808A: SAB(rs)c? pec[2]
I0? pec[3]
Apparent size (V)2.5′ × 0.8′[1]
Other designations
NGC 3808, UGC 6643[1]
NGC 3808A: MCG +04-28-021, PGC 36227[2]
NGC 3808B: MCG +04-28-020, PGC 36228[3]

The two galaxies were discovered on 10 April 1785 by William Herschel. The two are located about 330 million light-years (100 megaparsecs) away from the Earth.[4] Arp 87 was observed by the Hubble Space Telescope in 2007, which revealed massive clouds of gas and dust flowing from one galaxy to another. Additionally, both galaxies appear to have been distorted.[5]


See also



References


  1. "NED results for object ARP 187". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 21 April 2018.
  2. "NED results for object NGC 3808A". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 21 April 2018.
  3. "NED results for object NGC 3808B". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 21 April 2018.
  4. Seligman, Courtney. "New General Catalogue objects: NGC 3800 - 3849". cseligman.com. Retrieved 21 March 2018.
  5. "Arp 87 | ESA/Hubble". www.spacetelescope.org. 2007. Retrieved 21 March 2018.




На других языках


[de] NGC 3808

NGC 3808 ist eine Balken-Spiralgalaxie mit ausgedehnten Sternentstehungsgebieten vom Hubble-Typ SBc/P im Sternbild Löwe nördlich der Ekliptik. Sie ist schätzungsweise 316 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 150.000 Lichtjahren. Gemeinsam mit PGC 36228 (NGC 3808A) bildet sie das wechselwirkende Galaxienpaar ARP 87 oder KPG 297.
- [en] Arp 87

[es] NGC 3808

NGC 3808A es una galaxia espiral interaccionando con la vecina NGC 3808B, también galaxia espiral. Están situadas en la constelación de Leo, siendo el brillo superficial de NGC 3808 13,6. Fueron descubiertas por William Herschel en 1785 y catalogadas en el Atlas Arp de Galaxias Peculiares como Arp 87 por el astrónomo Halton Arp en los años 60. Se encuentran a 300 millones de años luz de la Tierra.

[ru] NGC 3808

NGC 3808 (другие обозначения — UGC 6643, ARP 87, MCG 4-28-21, VV 300, ZWG 127.25, PRC D-19, KCPG 297A, PGC 36227) — галактика в созвездии Лев.



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