||Photometry of galaxies in U B V R and I
The catalogue of aperture photometry of galaxies in U B V R and I
The present catalogue continues the
compilations published by G. Longo & A. de Vaucouleurs (1983, 1988
Monographs of University of Austin).
first version (1983)
may be obtained from CDS.
We have updated this catalogue by
scanning the literature and extended it
by adding aperture photometry derived from published surface
We also included our own unpublished measurements.
The catalogue and derived magnitudes
and colours are presented
in Prugniel and Héraudeau 1998, A&AS 128, 299
The catalogue contains 34675 aperture
measurements from diaphragm photometry
and 72336 derived from surface photometry or image analysis on a total
of 7567 galaxies.
The catalogue can be searched through
HyperLeda (search by name or
coordinates, download...), and is
available from CDS.
In the course of producing the global photometric parameters from growth curve fitting (see the corresponding catalogue in HyperLeda), we determined and applied corrections to the observed aperture photometry, to take into account systematic effects, and we determined external errors, in order to weight properly the data.
The dataset parameters table, lists the corrections and weights that we determined (see the paper for more details). The fields are:
- crb crv crr cri cru
- Corrections, in mag, to apply to the measured aperture magnitudes in respectively the B V R I and U bands. Corrected mag = measure - correction.
- Global weight
- Zero-point weight
- Number of galaxies in this dataset
- Density sampling