Arp 302

Arp 302
Arp 302 consists of a pair of very gas-rich spiral galaxies in their early stages of interaction: VV 340A is seen edge-on at top, and VV 340B face-on below. Composite image of X-ray data from Chandra (purple) and optical data from Hubble (red, green, blue).
Observation data (J2000 epoch)
Constellation	Boötes
Right ascension	14h 56m 54s
Declination	+24° 36.0′ 00″
Redshift	0.034505 (10166 km/s)
Distance	450 Mly (150 Mpc)
Apparent magnitude (V)	11.3 (15.3 + 15.7)
Characteristics
Type	S+S
Apparent size (V)	1′.6 (0′.6 × 0′.6 / 0′.9 × 0′.3)
Other designations
VV 340, IRAS 14547+2448, CGCG 1454.7+2448, APG 302, KPG 446, CGCG 134-58, IRAS F14547+2449, Arp 302, LEDA 53433 / 53432, 2MASX J14570030+2436246 / J14570066+2437026, MCG+04-35-018 / +04-35-019, UGC 9618

Arp 302 (also known as Exclamation Point Galaxy) is a galaxy in the constellation Boötes. Arp 302, also known as VV 340 or UGC 9618 consists of a pair of very gas-rich spiral galaxies in their early stages of interaction. An enormous amount of infrared light is radiated by the gas from massive stars that are forming at a rate similar to the most vigorous giant star-forming regions in our own Milky Way. Arp 302 is 450 million light-years away from Earth, and is the 302nd galaxy in Arp's Atlas of Peculiar Galaxies.

Gallery

• Tour of UGC 9618.
• 
  Hubble image of UGC 9618
• 
  Interacting galaxies: Arp 148, VV 340, Arp 256, NGC 6670, NGC 6240, ESO 593-8, NGC 454, UGC 8335, NGC 6786, NGC 17, ESO 77-14, NGC 6050.

References

• "SCI Website".
• "ALADIN Website".
• "SkyFactory.org".
• "SIMBAD Extragalactic Dabatase".

External links

• Media related to Arp 302 at Wikimedia Commons