NRAO: National Radio Astronomy Observatory

About this Image

A combined optical-radio image of the quasar IRAS 17596+4221 (Z+227-012) and a companion galaxy. The orange areas are the hydrogen gas imaged by the VLA. In the optical image, there is no direct evidence for an interaction between the galaxy hosting the quasar and the companion galaxy. The extensions in the hydrogen gas, however, are a clear indication of disruption resulting from an interaction between the two galaxies.

Investigator(s):  Jeremy Lim and Paul Ho

Alternate Resolutions

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This image is available in the following downloadable versions:

• 360 x 360 color JPEG

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
• Visit related website http://www.nrao.edu/astrores/HIrogues/webGallery/RoguesGallery21.html#roguesQSOs
• Up one level for more info on Quasars
• For unfamiliar terms, visit the NRAO Radio Astronomy Glossary

Technical Data

Telescope	VLA
Date of Observation	1998-00-00
Type of Observation	Spectral Line Observations
Wavelength	21 cm
Frequency	1420.4 MHz
Species	HI
Center of Image	RA: 18:01:9.00, Dec: 42:21:43.00
Field of View	0.0500 x 0.0500 degrees
Technical Caption



Astronomical database entries for Z 227-012
• Query NED for images of Z 227-012
• Query SIMBAD for more Z 227-012 data

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