NRAO: National Radio Astronomy Observatory

About this Image

This image of the colliding galaxy pair Arp 299 (also known as NGC 3690/IC694) was produced combining radio wavelength observations from the National Radio Astronomy Observatory's Very Large Array with data from the Hubble Space Telescope. Radio emission is shown as red, near-infrared emission as green, and ultraviolet emission as blue. This colliding pair is a region of vigorous star formation which has been investigated in the past. Since 1990, four supernova explosions have been seen optically in Arp 299. Observations with the NRAO's Very Large Array (VLA) showed a region near the nucleus of one of the colliding galaxies which had all the earmarks of prolific star formation. Observations with the VLBA and the GBT in 2002 and 2003 led to the discovery of 5 supernovae concentrated in this region.

Investigator(s):  J. Ulvestad, S. Neff & S. Teng

Alternate Resolutions

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This image is available in the following downloadable versions:

• 529 x 473 low resolution color jpg
• 894 x 800 medium resolution color jpg
• 2039 x 1823 high resolution color tiff

If you would like to obtain a higher resolution version of this image, please contact Pat Smiley.

For More Information

• Read the Press Release
• Read the Journal article
• Read the NRAO Newsletter article
• Up one level for more info on Peculiar galaxies
• For unfamiliar terms, visit the NRAO Radio Astronomy Glossary

Technical Data

Telescope	VLA
Date of Observation	2000-10-24
Type of Observation	Continuum Observations
Band	C
Wavelength	6 cm
Frequency	5.0 GHz
Center of Image	RA: 11:28:33.00, Dec: 58:33:58.00 (J2000)
Field of View	0.0142 x 0.0197 degrees
Technical Caption	The radio emission is continuum emission at a frequency of 5 GHz. The near-infrarred/ultraviolet data are observations made with the Hubble Space Telescope, obtained from the data archive at the STScI. The near-infrared emission is from an HST/WFPC2 observation through the F814 filter, and the ultraviolet emission is from an HST/WFPC2 observation through the F255+F300 filters.



Astronomical database entries for Arp299
• Query NED for images of Arp299
• Query SIMBAD for more Arp299 data

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