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Deep Searches for High Redshift Molecular Absorption

Published online by Cambridge University Press:  30 March 2016

S. J. Curran ,
J. K. Webb ,
M. T. Murphy  and
N. Kuno
S. J. Curran
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia
J. K. Webb
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia
M. T. Murphy
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, UK
N. Kuno
Affiliation:
Nobeyama Radio Observatory, Nagano 384-1305, Japan

Abstract

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Millimetre-band scans of the frequency space towards optically dim quasars is potentially a highly efficient method for detecting new high red-shift molecular absorption systems. Here we describe scans towards 7 quasars over wide bandwidths (up to 23 GHz) with sensitivity limits sufficient to detect the 4 redshifted absorbers already known. With wider frequency bands, highly efficient searches of large numbers of possibly obscured objects will yield many new molecular absorbers.

Type
I. Joint Discussions
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 845 - 847
Copyright
Copyright © Astronomical Society of Pacific 2005

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