Definition of the galaxy sample
The sample from which WHISP candidates are being selected consists of
galaxies in the Uppsala General Catalogue of Galaxies (Nilson 1973)
with
- blue major diameters > 1.5 arcmin
- dec.(1950) > 20 degrees
This sample comprises 3148 galaxies in total.
A subsample of 200 galaxies with
- blue major diameters
> 2.0 arcmin
- flux densities at 21-cm larger
than 200 mJy
presently serves as the main observing
list for WHISP. Galaxies satisfying these selection criteria generally
have redshifts less than 2000 km/s.