The Las Campanas/AAT rich cluster survey - I. Precision and reliability of the photometric catalogue

Pimbblet, K. A., Smail, I., Edge, A. C., Couch, W. J., OHely, E. and Zabludoff, A. I. (2001) The Las Campanas/AAT rich cluster survey - I. Precision and reliability of the photometric catalogue. Monthly Notices of The Royal Astronomical Society, 327 2: 588-600. doi:10.1046/j.1365-8711.2001.04759.x

Author Pimbblet, K. A.
Smail, I.
Edge, A. C.
Couch, W. J.
OHely, E.
Zabludoff, A. I.
Title The Las Campanas/AAT rich cluster survey - I. Precision and reliability of the photometric catalogue
Journal name Monthly Notices of The Royal Astronomical Society   Check publisher's open access policy
ISSN 0035-8711
Publication date 2001
Sub-type Article (original research)
DOI 10.1046/j.1365-8711.2001.04759.x
Open Access Status DOI
Volume 327
Issue 2
Start page 588
End page 600
Total pages 13
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Language eng
Abstract The Las Campanas Observatory and Anglo-Australian Telescope Rich Cluster Survey (LARCS) is a panoramic imaging and spectroscopic survey of an X-ray luminosity-selected sample of 21 clusters of galaxies at 0.07 < z < 0.16. Charge-coupled device (CCD) imaging was obtained in B and R of typically 2 degrees wide regions centred on the 21 clusters, and the galaxy sample selected from the imaging is being used for an on-going spectroscopic survey of the clusters with the 2dF spectrograph on the Anglo-Australian Telescope. This paper presents the reduction of the imaging data and the photometric analysis used in the survey. Based on an overlapping area of 12.3 deg(2) we compare the CCD-based LARCS catalogue with the photographic-based galaxy catalogue used for the input to the 2dF Galaxy Redshift Survey (2dFGRS) from the APM, to the completeness of the GRS/APM catalogue, b(J) = 19.45. This comparison confirms the reliability of the photometry across our mosaics and between the clusters in our survey. This comparison also provides useful information concerning the properties of the GRS/APM. The stellar contamination in the GRS/APM galaxy catalogue is confirmed as around 5-10 per cent, as originally estimated. However, using the superior sensitivity and spatial resolution in the LARCS survey evidence is found for four distinct populations of galaxies that are systematically omitted from the GRS/APM catalogue. The characteristics of the 'missing' galaxy populations are described, reasons for their absence examined and the impact they will have on the conclusions drawn from the 2dF Galaxy Redshift Survey are discussed.
Keyword Astronomy & Astrophysics
Apm Galaxy Survey
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
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Created: Mon, 13 Aug 2007, 12:37:33 EST