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)
This sample comprises 3148 galaxies in total.
- blue major diameters > 1.5 arcmin
- dec.(1950) > 20 degrees
A subsample of 200 galaxies with
presently serves as the main observing
list for WHISP. Galaxies satisfying these selection criteria generally
have redshifts less than 2000 km/s.
- blue major diameters
> 2.0 arcmin
- flux densities at 21-cm larger
than 200 mJy