Quenching of Star Formation Export

@article{citeulike:3504016, abstract = {In the last decade we have seen an enormous increase in the size and quality of spectroscopic galaxy surveys, both at low and high redshift. New statistical techniques to analyse large portions of galaxy spectra are now finding favour over traditional index based methods. Here we will review a new robust and iterative Principal Component Analysis (PCA) algorithm, which solves several common issues with classic PCA. Application to the 4000AA break region of galaxies in the VIMOS VLT Deep Survey (VVDS) and Sloan Digital Sky Survey (SDSS) gives new high signal-to-noise ratio spectral indices easily interpretable in terms of recent star formation history. In particular, we identify a sample of post-starburst galaxies at z\~{}0.7 and z\~{}0.07. We quantify for the first time the importance of post-starburst galaxies, consistent with being descendants of gas-rich major mergers, for building the red sequence. Finally, we present a comparison with new low and high redshift "mock spectroscopic surveys" derived from a Millennium Run semi-analytic model.}, archivePrefix = {arXiv}, author = {Wild, Vivienne and Budavari, Tamas and Blaizot, Jeremy and Walcher, Jakob C. and Johansson, Peter H. and Lemson, Gerard and de Lucia, Gabriella and Charlot, Stephane}, citeulike-article-id = {3504016}, citeulike-linkout-0 = {http://arxiv.org/abs/0811.1174}, citeulike-linkout-1 = {http://arxiv.org/pdf/0811.1174}, day = {7}, eprint = {0811.1174}, keywords = {formation, galaxies, post-starburst, star}, month = {Nov}, posted-at = {2008-11-15 22:45:24}, priority = {2}, title = {Quenching of Star Formation}, url = {http://arxiv.org/abs/0811.1174}, year = {2008} }

TY - JOUR ID - citeulike:3504016 L3 - citeulike-article-id:3504016 N2 - In the last decade we have seen an enormous increase in the size and quality of spectroscopic galaxy surveys, both at low and high redshift. New statistical techniques to analyse large portions of galaxy spectra are now finding favour over traditional index based methods. Here we will review a new robust and iterative Principal Component Analysis (PCA) algorithm, which solves several common issues with classic PCA. Application to the 4000AA break region of galaxies in the VIMOS VLT Deep Survey (VVDS) and Sloan Digital Sky Survey (SDSS) gives new high signal-to-noise ratio spectral indices easily interpretable in terms of recent star formation history. In particular, we identify a sample of post-starburst galaxies at z~0.7 and z~0.07. We quantify for the first time the importance of post-starburst galaxies, consistent with being descendants of gas-rich major mergers, for building the red sequence. Finally, we present a comparison with new low and high redshift "mock spectroscopic surveys" derived from a Millennium Run semi-analytic model. TI - Quenching of Star Formation KW - formation KW - galaxies KW - post-starburst KW - star AU - Wild, Vivienne AU - Budavari, Tamas AU - Blaizot, Jeremy AU - Walcher, Jakob AU - Johansson, Peter AU - Lemson, Gerard AU - de Lucia, Gabriella AU - Charlot, Stephane PY - 2008/Nov/07/ UR - http://arxiv.org/abs/0811.1174 ER -