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XMM-Newton Observations of the DLS Shear-Selected Cluster SurveyThe goal of this project continues to be to test the selection effects in cluster surveys by investigating the X-ray properties of the first shear-selected sample of galaxy clusters, the Deep Lens Survey (DLS). Because lensing signal is only sensitive to mass (albeit with projection effects), lensing signal can be used to select a sample that is independent of its X-ray properties. If a lensing-selected sample has very different X-ray properties from an X-ray selected sample, it would have important consequences for evolutionary studies based on existing cluster samples was aimed at refining the lensing-selected sample as part of this continuing study The grant supported a KPNO run to obtain data on another region of the sky to extend the cluster sample, and also the purchase of a disk array for archiving the optical mosaic data (Two terabytes worth) from which the lensing maps are derived As a result of the grant, we have extended the lensing cluster sample to another 4-square degree patch of the sky, adding another three clusters to our sample to be observed While the sample of X-ray observed clusters is too small to derive a firm conclusion yet, our preliminary finding is that the X-ray properties of the observed sample do not differ from those of X-ray selected surveys A paper discussing the first results has been published, and a second paper on the mass differences is still in preparation (with J Hughes as first author)
Document ID
20050196626
Acquisition Source
Headquarters
Document Type
Contractor or Grantee Report
Authors
DellAntonio, Ian
(Brown Univ. Providence, RI, United States)
Date Acquired
August 23, 2013
Publication Date
July 19, 2005
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAG5-13573
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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