Arp 299

Arp 299
Arp 299
	HST image of Arp 299 with NGC 3690 (left) & IC 694 (right)
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	11h 28m 33.13s
Declination	+58° 33′ 58.0″
Redshift	0.010
Distance	130 Mly
Apparent magnitude (V)	11
Characteristics
Type	SBm pec. / IBm pec.
Apparent size (V)	2′.4 × 1′.9
Notable features	interacting galaxies
Other designations
	IC 694, NGC 3690, VV 118, Mrk 171

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.

It is not completely clear which object is historically called IC 694. According to some sources, the small appendage more than an arcminute northwest^{[clarification needed]} 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] Eight supernovae have been detected in Arp 299: , , , were observed in NGC 3690 while , , and were observed in IC 694.^[4]

References[]

^ "Who is IC 694?". Retrieved 2010-04-11.
^ "SEDS: Revised IC Data for IC 694". Archived from the original on 2007-03-21. Retrieved 2012-04-11.
^ 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.
^ 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.