Study of Blue Compact Dwarf Galaxies at Redshift 0.2 ~ 0.5 Using SDSS DR7

Details Study of Blue Compact Dwarf Galaxies at Redshift 0.2 ~ 0.5 Using SDSS DR7 Study of Blue Compact Dwarf Galaxies at Redshift 0.2 ~ 0.5 Using SDSS DR7

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011eas....48..127c&link_type=abstract

EAS Publications Series, Volume 48, 2011, pp.127-128

Computer Science

Scientific paper

We present a mass-metallicity (M-Z) relation of 412 blue compact dwarf galaxies at z = 0.2 ~ 0.5 using the Sloan Digital Sky Survey (SDSS) DR7 spectroscopic data. We found a variation of mass-metallicity relations depending on the redshift in which metallicity evolution of low mass galaxies appear to be stronger than that of high mass galaxies. The specific star formation rate (SSFR) shows tight correlation with galaxy mass in the sense that low mass galaxies have substantially high SSFR. We also discuss environmental effect in the SSFR vs galaxy mass relation. At a given mass, merging system shows systematically higher SSFR than isolated one.

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