The Marseille Schmidt survey for active star-forming galaxies I. Data on 92 emission line objects in two fields

We present data from a moderately deep spectroscopic Schmidt survey (B-lim = 17.5) of "active galaxies" selected by the presence of emission lines in their spectra and/or their UV excess. The redshift, magnitudes, color and diameter reduction methods have been discussed in a previous paper. Here we explain the emission line equivalent width determination method. 92 emission line objects have been found in two adjacent fields (approximately 50 deg(2)) in the direction of the southern extension of the Virgo cluster. We give a catalog containing positions, photographic R and B magnitudes, U-R colors, effective diameters, redshifts, equivalent widths and intensity ratios of the [OIII]lambda lambda 4959, 5007; H-beta and [OII]lambda 3727 emission lines. On these fields, we evaluate the completeness limit of the survey at a pseudo B magnitude value of 15.7. A more elaborate astrophysical analysis will appear in a forthcoming paper.