The Gas-Phase Metallicity of Star-Forming Galaxies from LAMOST

This dataset is derived from the LAMOST survey and contains gas-phase metallicity information of star-forming galaxies. The table includes the unique identifier for LAMOST spectra (obsid), celestial coordinates (RA and Dec), signal-to-noise ratio in the r-band (snrr), spectral redshift (z), and gas-phase metallicity (Z_pred) predicted by a convolutional neural network (CNN) regression model.The distribution of gas-phase metallicity peaks at approximately 9.0 dex, with most samples ranging from 8.5 to 9.2 dex and an average of about 8.91 dex. This dataset can support studies on galaxy chemical evolution and star formation processes.