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Spectra of nearby galaxies measured with a new very broadband receiver

Published online by Cambridge University Press:  01 February 2008

Gopal Narayanan
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA email: gopal@astro.umass.edu
Ronald L. Snell
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA
Neal R. Erickson
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA
Aeree Chung
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA
Mark H. Heyer
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA
Min Yun
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA
William M. Irvine
Affiliation:
Astronomy Department, University of Massachusetts, Amherst, MA 01003USA The Goddard Center for Astrobiology
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Abstract

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Three-millimeter-wavelength spectra of a number of nearby galaxies have been obtained at the Five College Radio Astronomy Observatory (FCRAO) using a new, very broadband receiver. This instrument, which we call the Redshift Search Receiver, has an instantaneous bandwidth of 36 GHz and operates from 74 to 110.5 GHz. The receiver has been built at UMass/FCRAO to be part of the initial instrumentation for the Large Millimeter Telescope (LMT) and is intended primarily for determination of the redshift of distant, dust-obscured galaxies. It is being tested on the FCRAO 14 m by measuring the 3 mm spectra of a number of nearby galaxies. There are interesting differences in the chemistry of these galaxies.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

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