Autofib Redshift Survey -- II. Evolution of the galaxy luminosity function by spectral type
- 1 March 1997
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 285 (3) , 613-634
- https://doi.org/10.1093/mnras/285.3.613
Abstract
We determine the evolution of the galaxy luminosity function (LF) as a function of spectral type using the Autofib Redshift Survey, a compendium of over 1700 galaxy redshifts in various magnitude-limited samples spanning bJ = 11.5–24.0. To carry out this analysis we have developed a cross-correlation technique which classifies faint galaxy spectra into one of six types based on local galaxy templates. Tests and simulations show that this technique yields classifications correct to wtihin one type for more than 90 per cent of the galaxies in our sample. We have also developed extensions of the step-wise maximum likelihood method and the Sandage, Tamman & Yahil (STY) parametric method for estimating LFs which are applicable to recovering an evolving LF from multiple samples. We compare these methods to the standard 1/Vmax method used in Paper I.Keywords
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