Arp 299

Arp 299 (parts of it are also known as IC 694 and NGC 3690) is a pair of colliding galaxies approximately 134 million light-years away in the constellation Ursa Major. Both of the galaxies involved in the collision are barred irregular galaxies.

Arp 299
HST image of Arp 299 with NGC 3690 (left) & IC 694 (right)
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension11h 28m 33.13s
Declination+58° 33′ 58.0″
Redshift0.010
Distance130 Mly
Apparent magnitude (V)11
Characteristics
TypeSBm pec. / IBm pec.
Apparent size (V)2′.4 × 1′.9
Notable featuresinteracting galaxies
Other designations
IC 694, NGC 3690, VV 118, Mrk 171

It is not completely clear which object is historically called IC 694. According to some sources, the small appendage more than an arcminute northwest of the main pair is actually IC 694, not the primary (eastern) companion.[1][2]

The interaction of the two galaxies in Arp 299 produced young powerful starburst regions similar to those seen in II Zw 96.[3] Nine supernovae have been detected in Arp 299: SN 1992bu, SN 1993G, SN 1998T, SN 1999D, SN 2020fkb, SN 2022gnp were observed in NGC 3690 while SN 2005U, SN 2010O and SN 2010P were observed in IC 694.[4][5]

See also

References
  1. "Who is IC 694?". Retrieved 2010-04-11.
  2. "SEDS: Revised IC Data for IC 694". Archived from the original on 2007-03-21. Retrieved 2012-04-11.
  3. Goldader, Jeffrey D.; Goldader, Deborah L.; Joseph, R. D.; Doyon, Rene; Sanders, D. B. (May 1997). "Heavily Obscured Star Formation in the II ZW 96 Galaxy Merger". Astronomical Journal. 113: 1569–1579. Bibcode:1997AJ....113.1569G. doi:10.1086/118374.
  4. 2010O in NGC 3690 (David Bishop)
  5. Kankare, E; Mattila, S; Ryder, S; Fraser, M; Pastorello, A; Elias-Rosa, N; Romero-Cañizales, C; Alberdi, A; Hentunen, V. -P; Herrero-Illana, R; Kotilainen, J; Pérez-Torres, M. -A; Väisänen, P (2014). "The nature of supernovae 2010O and 2010P in Arp 299 - I. Near-infrared and optical evolution". Monthly Notices of the Royal Astronomical Society. 440 (2): 1052. arXiv:1311.6408. Bibcode:2014MNRAS.440.1052K. doi:10.1093/mnras/stt2289. S2CID 118627973.
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