UBVRI photometry of the Durham-AAT redshift survey
Abstract
Using the PDS microdensitometer at the Royal Greenwich Observatory, we have acquired U, B, V, R and I surface photometry from UK Schmidt photographic plates for all the galaxies with measured redshifts in the Durham-AAT redshift survey. By comparison with CCD photometry we show that such precision photographic photometry of galaxies off IIIa emulsions is capable of an accuracy as good as a few hundredths of a magnitude. We discuss the colour-related properties of these galaxies, and derive luminosity functions in each waveband. We show that when divided by colour, the faint-end slope of the luminosity function of the bluer galaxies is significantly steeper than that for the redder ones.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 1998
- DOI:
- 10.1046/j.1365-8711.1998.01228.x
- Bibcode:
- 1998MNRAS.294..147M
- Keywords:
-
- Astronomical Photometry;
- Red Shift;
- Sky Surveys (Astronomy);
- Photographic Plates;
- Microdensitometers;
- Astronomical Observatories;
- Astronomy;
- GALAXIES: FUNDAMENTAL PARAMETERS;
- GALAXIES: LUMINOSITY FUNCTION;
- MASS FUNCTION;
- GALAXIES: PHOTOMETRY