NRAO: National Radio Astronomy Observatory

About this Image

A composite of X-ray (blue) emission from the core of the Virgo Cluster as observed with the IPC of the Einstein Observatory and total hydrogen maps of the 10 brightest spirals as observed with the VLA in its most compact D-array configuration (red contours). The X-ray image is a mosaic of many individual non-overlapping observations with a square imaging camera, which leads to the irregular appearence in the image. The angular scale of the individual total HI maps has been magnified with a factor of 11. The anticorrelation between the X-ray emission and neutral hydrogen makes it likely that the HI-deficient spirals have been stripped by the hot X-ray halo of M87, a bright elliptical near the center of the cluster and a bright X-ray source, corresponding to the bright source at the center of the image.

Investigator(s):  C. Jones, W.R. Forman, J.H. van Gorkom, C. Balkowski, and C.G. Kotanyi

Alternate Resolutions

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This image is available in the following downloadable versions:

• 468 x 480 color JPEG
• 900 x 924 color JPEG
• 2100 x 2156 color TIFF

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

For More Information

• Read the Journal article
• Visit related website http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1990AJ....100..604C
• Up one level for more info on Clusters
• For unfamiliar terms, visit the NRAO Radio Astronomy Glossary

Technical Data

Telescope	ALMA
Date of Observation	1982-12-00
Type of Observation	Spectral Line Observations
Wavelength	21 cm
Frequency	1420.4 MHz
Species	HI
Center of Image	RA: 12:26:32.08, Dec: 12:43:23.90
Field of View	10.0000 x 10.0000 degrees
Technical Caption	The VLA was in the D-array configuration.



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

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