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The Arecibo Galaxy Environment Survey – Potential for finding Dark Galaxies and Results so far

Published online by Cambridge University Press:  01 June 2007

R. F. Minchin ,
R. Auld ,
L. Cortese ,
J. I. Davies ,
E. Momjian ,
R. Taylor ,
B. Catinella ,
P. Henning ,
S. Linder  and
E. Muller
...Show all authors
R. F. Minchin
Affiliation:
Arecibo Observatory, Arecibo, United States, email: rminchin@naic.edu
R. Auld
Affiliation:
Cardiff University, Cardiff, United Kingdom
L. Cortese
Affiliation:
Cardiff University, Cardiff, United Kingdom
J. I. Davies
Affiliation:
Cardiff University, Cardiff, United Kingdom
E. Momjian
Affiliation:
Arecibo Observatory, Arecibo, United States, email: rminchin@naic.edu
R. Taylor
Affiliation:
Cardiff University, Cardiff, United Kingdom
B. Catinella
Affiliation:
Max Planck Institute for Astrophysics, Garching, Germany
P. Henning
Affiliation:
University of New Mexico, Albuquerque, United States
S. Linder
Affiliation:
University of Hamburg, Hamburg, Germany
E. Muller
Affiliation:
Australia Telescope National Facility, Sydney, Australia
K. O'Neil
Affiliation:
National Radio Astronomy Observatory, Green Bank, United States
J. Rosenberg
Affiliation:
Harvard Smithsonian Centre for Astrophysics, Cambridge, United States
S. Sabatini
Affiliation:
Osservatorio Astronomico di Roma, Rome, Italy
S. E. Schneider
Affiliation:
University of Massachusetts, Amhurst, United States
M. Stage
Affiliation:
University of Massachusetts, Amhurst, United States
W. van Driel
Affiliation:
Observatoire de Paris, Paris, France
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Abstract

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The Arecibo Galaxy Environment Survey is a blind neutral hydrogen survey using the ALFA multibeam receiver at Arecibo Observatory to reach unprecedented sensitivities in a number of selected fields in the local Universe. When completed the survey will cover 200 square degrees out to a distance of at least 270 Mpc. If a population of gas-rich dark galaxies exists, then this survey is in a prime position to uncover that population.

So far 20 square degrees have been covered in the regions of Abell 1367, the Virgo Cluster, the NGC 7332/9 galaxy pair and the isolated galaxy NGC 1156. Over 200 sources have been found, including a number that have no obvious optical counterparts. We discuss here the potential of AGES for uncovering more such objects and the characteristics of the dark sources identified to date.

Keywords

surveysgalaxies: distances and redshiftsdark matterradio lines: galaxiesclusters: individual (Abell 1367, Virgo)galaxies: individual (AGES J0256+2546, AGES J0300+2554, AGES J1239+1152, AGES J1245+1148, AGES J2257+2253)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S244: Dark Galaxies and Lost Baryons , June 2007 , pp. 112 - 119
Copyright
Copyright © International Astronomical Union 2008

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