  We present a systematic spectral analysis of 350 bright GRBs observed with
BATSE, with high spectral and temporal resolution. Our sample was selected from
the complete set of 2704 BATSE GRBs, and included 17 short GRBs. To obtain
well-constrained spectral parameters, four different photon models were fitted
and the spectral parameters that best represent each spectrum were
statistically determined. A thorough analysis was performed on 350
time-integrated and 8459 time-resolved burst spectra. Using the results, we
compared time-integrated and time-resolved spectral parameters, and also
studied correlations among the parameters and their evolution within each
burst. The resulting catalog is the most comprehensive study of spectral
properties of GRB prompt emission to date, and provides constraints with
exceptional statistics on particle acceleration and emission mechanisms in
GRBs.
