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A Survey for Low Surface Brightness Galaxies using Tech Pan Films

Published online by Cambridge University Press:  12 April 2016

Jean Marc Schwartzenberg ,
Steven Phillipps  and
Quentin A. Parker
Jean Marc Schwartzenberg
Affiliation:
Department of Physics and Astronomy, University of Wales College of Cardiff, P.O. Box 913, Cardiff CF2 3YB, U.K.
Steven Phillipps
Affiliation:
Department of Physics and Astronomy, University of Wales College of Cardiff, P.O. Box 913, Cardiff CF2 3YB, U.K.
Quentin A. Parker
Affiliation:
UKST, Anglo-Australian Observatory, Siding Spring Mountain, Coonabarabran, NSW 2357, Australia

Abstract

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We report on a new survey for low surface brightness galaxies using Kodak Tech Pan 4415 film on the UKST, and demonstrate the advantages of this film over conventional IIIa plates when searching for faint, extended objects. Recent experiments with films of the Virgo cluster have shown that the noise per pixel in deep exposures is only 0.7 % of sky, enabling known objects to be traced out to an isophote around 27 Rµ. In addition, a preliminary survey has revealed several new galaxies with central surface brightnesses around 24 Rµ. With the digital coaddition of several films, we expect to be able to measure objects out to the 28 Rµ isophote and detect galaxies with central surface brightnesses as faint as ∼ 25 Rµ, i.e. below 3 % of sky.

Type
XI. Galaxies
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 428 - 431
Copyright
Copyright © Astronomical Society of the Pacific 1995

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