The Role of Environment in the Mass-Metallicity Relation Export

@misc{citeulike:2985386, abstract = {Using a sample of 57,377 star-forming galaxies drawn from the Sloan Digital Sky Survey, we study the relationship between gas-phase oxygen abundance and environment in the local Universe. We find that there is a strong relationship between metallicity and environment such that more metal-rich galaxies favor regions of higher overdensity. Furthermore, this metallicity-density relation is comparable in strength to the color-density relation along the blue cloud. After removing the mean dependence of environment on color and luminosity, we find a significant residual trend between metallicity and environment that is largely driven by galaxies in high-density regions, such as groups and clusters. We discuss the potential source of this relationship between metallicity and local galaxy density in the context of feedback models, with special attention paid to quantifying the impact of environment on the scatter in the mass-metallicity relation. We find that environment is a non-negligible source of scatter in this fundamental relation, with \> 15\% of the measured scatter correlated with environment.}, archivePrefix = {arXiv}, author = {Cooper, Michael C. and Tremonti, Christy A. and Newman, Jeffrey A. and Zabludoff, Ann I.}, citeulike-article-id = {2985386}, citeulike-linkout-0 = {http://arxiv.org/abs/0805.0308}, citeulike-linkout-1 = {http://arxiv.org/pdf/0805.0308}, day = {2}, eprint = {0805.0308}, keywords = {enviroment, icm, observation, sdss}, month = {May}, posted-at = {2008-07-10 15:55:55}, priority = {2}, title = {The Role of Environment in the Mass-Metallicity Relation}, url = {http://arxiv.org/abs/0805.0308}, year = {2008} }

TY - ELEC ID - citeulike:2985386 L3 - citeulike-article-id:2985386 N2 - Using a sample of 57,377 star-forming galaxies drawn from the Sloan Digital Sky Survey, we study the relationship between gas-phase oxygen abundance and environment in the local Universe. We find that there is a strong relationship between metallicity and environment such that more metal-rich galaxies favor regions of higher overdensity. Furthermore, this metallicity-density relation is comparable in strength to the color-density relation along the blue cloud. After removing the mean dependence of environment on color and luminosity, we find a significant residual trend between metallicity and environment that is largely driven by galaxies in high-density regions, such as groups and clusters. We discuss the potential source of this relationship between metallicity and local galaxy density in the context of feedback models, with special attention paid to quantifying the impact of environment on the scatter in the mass-metallicity relation. We find that environment is a non-negligible source of scatter in this fundamental relation, with > 15% of the measured scatter correlated with environment. TI - The Role of Environment in the Mass-Metallicity Relation KW - enviroment KW - icm KW - observation KW - sdss AU - Cooper, Michael AU - Tremonti, Christy AU - Newman, Jeffrey AU - Zabludoff, Ann PY - 2008/May/02/ UR - http://arxiv.org/abs/0805.0308 ER -