NRAO: National Radio Astronomy Observatory

About this Image

Image of Hickson Compact Group 7 depicting neutral hydrogen gas (red) from the VLA and infrared observations from the IRAC instrument on the Spitzer Space Telescope (blue and green). Neutral hydrogen gas tells astronomers about the distribution of the gas (shown here in red) and the dynamics of the group. The infrared observations show stellar light (blue) and warm emission from dust (green)- the signature of stellar formation. Studies of neutral hydrogen and infrared emission in compact groups help astronomers to better understand their evolution and how the dynamical state is linked to the level of star formation activity.

Investigator(s):  Amanda Heiderman, John Hibbard, Kelsey Johnson

Alternate Resolutions

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This image is available in the following downloadable versions:

• 500 x 449 color JPEG
• 919 x 825 color JPEG
• 2400 x 2155 color TIFF

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

For More Information

• Up one level for more info on Clusters
• For unfamiliar terms, visit the NRAO Radio Astronomy Glossary

Technical Data

Telescope	VLA
Date of Observation	1993-12-10
Type of Observation	Spectral Line Observations
Center of Image	RA: 00:39:23.00, Dec: 00:52:41.00 (J2000)
Field of View	0.1667 x 0.1667 degrees
Technical Caption	This image of HCG 7 is composed of VLA HI C+D array configuration data. The Spitzer IRAC bands shown are (3.6, 4.5) microns in blue and (5.8, 8.0) microns in green.



Astronomical database entries for HCG 007
• Query NED for images of HCG 007
• Query SIMBAD for more HCG 007 data

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