| Abstract | Results are presented for 21-cm line observations of 461 galaxies classified as dwarfs in Nilson's (1973) catalog but not listed in the DDO dwarf catalog. A total of 145 galaxies were detected (31% detection rate), mostly within the velocity search interval from -400 to 3000 km/s. It is found that no Nilson dwarf has a velocity of less than 250 km/s, suggesting that the list of known neutral hydrogen-rich dwarf galaxies is probably complete for distances of no more than 3 Mpc, declinations of at least -2 deg 30 min, galactic latitudes of at least + or - 20 deg, and absolute photographic magnitudes no fainter than -10.5. Neutral hydrogen profiles and masses, redshift, total masses, and estimated apparent photographic magnitudes are provided for the detected galaxies, along with reasons for nondetections. |
