EMISSION-LINE GALAXIES IN THE 3RD LIST OF THE CASE LOW-DISPERSION NORTHERN SKY SURVEY

Spectra have been obtained for 47 galaxies in the third list of the Case Low-Dispersion Northern Sky Survey, which covers an area R.A. = 08h05m-10h10m, Dec. = + 33.0-degrees- + 38.0-degrees. Thirty-five of the galaxies in the sample were selected for the presence of emission lines on the objective prism plates. At the higher spectral dispersion of our data, significant line emission was found in 46 of the 47 galaxies. Twenty-six galaxies are undergoing significant bursts of star formation. Ten additional galaxies may be starburst galaxies with low-excitation spectra. Two galaxies are probably type Seyfert 2. The most distant object, CG 200, at a redshift z = 0.144, has a strong, broad H-alpha emission line, and is probably a Seyfert 1. Seventeen of the galaxies have been detected by IRAS. Eight of the IRAS galaxies have H II region-type spectra and eight have low-ionization starburst spectra. The galaxies represent a mixture of types, ranging from intrinsically faint dwarf galaxies with M(B) = - 16 mag, to powerful galaxies with M(B) = - 23 mag. Galaxies CG 234, CG 235 are interacting, as are galaxies CG 269, CG 270.