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An Emission-Line Galaxy Survey with the UK Schmidt Telescope

Published online by Cambridge University Press:  04 August 2017

M. Kalafi ,
A. Savage ,
A.R. Good ,
R.D. Cannon  and
M.G. Yates
M. Kalafi
Affiliation:
University of Tabriz, IRAN
A. Savage
Affiliation:
Royal Observatory, Edinburgh, U.K.
A.R. Good
Affiliation:
Royal Observatory, Edinburgh, U.K.
R.D. Cannon
Affiliation:
Royal Observatory, Edinburgh, U.K.
M.G. Yates
Affiliation:
University of Edinburgh, U.K.

Extract

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The use of objective prisms in conjunction with the large area coverage afforded by Schmidt telescopes provides a very powerful means of detecting large numbers of emission-line galaxies, and allows one to study their large scale distribution. An important question that has yet to be fully addressed is the relationship between the number-magnitude distributions of the normal field galaxy and emission-line galaxy populations. A comparison such as this would effectively probe the evolution with time of these active objects. For example, study of the distant (z = 0.458) cluster of galaxies associated with 3C 295 (Dressler & Gunn 1983) indicates that emission-line objects may have been far more numerous in the past than at present. As a preliminary investigation in advance of a larger project, we report here on a search for emission-line galaxies in four United Kingdom 1.2m Schmidt Telescope (UKST) objective prism fields.

Type
I. Surveys of Active Galaxies and QSO's
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 53 - 55
Copyright
Copyright © Reidel 1987 

References

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