Star formation properties of galaxy cluster A1767
  Abell 1767 is a dynamically relaxed, cD cluster of galaxies with a redshift
of 0.0703. Among 250 spectroscopically confirmed member galaxies within a
projected radius of 2.5r_{200}, 243 galaxies (~ 97%) are spectroscopically
covered by the Sloan Digital Sky Survey (SDSS). Based on this homogeneous
spectral sample, the stellar evolutionary synthesis code, STARLIGHT, is applied
to investigate the stellar populations and star formation histories (SFHs) of
cluster galaxies. The star formation properties of galaxies, such as mean
stellar ages, metallicities, stellar masses, and star formation rates (SFRs),
are presented as the functions of local galaxy density. Strong environmental
effect is found in the manner that massive galaxies in the high-density core
region of cluster tend to have higher metallicities, longer mean stellar ages,
and lower specific star formation rates (SSFRs), and their recent star
formation activities have been remarkably suppressed. In addition, the
correlations of the metallicity and SSFR with stellar mass are confirmed.
