%0 Generic %1 spindler2017sdssiv %A Spindler, Ashley %A Wake, David %A Belfiore, Francesco %A Bershady, Matthew %A Bundy, Kevin %A Drory, Niv %A Law, David R. %A Masters, Karen %A Sánchez-Gallego, José R. %A Thomas, Daniel %A Westfall, Kyle %A Wild, Vivienne %D 2017 %K environment manga mass quenching %T SDSS-IV MaNGA: The Spatial Distribution of Star Formation and its Dependence on Mass, Structure and Environment %U http://arxiv.org/abs/1710.05049 %X We study the spatially-resolved star formation rates of 1494 galaxies in the SDSSIV-MaNGA Survey. Star formation rates are calculated using a two-step process, exploiting H$_\alpha$ in star-forming regions and $D_n4000$ in zones identified as AGN/LI(N)ER or lineless according to the BPT diagram. This enables a complete view of how radial profiles of specific star formation rate depend on stellar mass, galaxy structure and environment, providing valuable clues about the nature of both secular and environmental quenching processes. We report on the existence of `Centrally Suppressed' galaxies, which have lower SSFR in their cores compared to their disks. The profiles of centrally suppressed and unsuppressed galaxies are distributed in a bimodal way, with very few galaxies having intermediate profile shapes. Galaxies with large stellar masses and central velocity dispersions are much more likely to be centrally-suppressed than low-mass galaxies, a result linked to their morphology and the presence of AGN/LI(N)ER like emission. Centrally suppressed galaxies also display lower star formation at all radii compared to unsuppressed galaxies. Independent of galaxy type, galaxies identified as satellites in larger dark matter halos have noticeably lower SSFR at outer radii compared to central galaxies. This uniform suppression could be a signal of the stripping of hot gas reservoirs through a process like strangulation. We find that satellites are not more likely to be suppressed in their cores than centrals, indicating that core suppression is an entirely secular process. We find no secondary correlation between the local environment density and the profiles of star formation rate surface density.

@misc{spindler2017sdssiv, abstract = {We study the spatially-resolved star formation rates of 1494 galaxies in the SDSSIV-MaNGA Survey. Star formation rates are calculated using a two-step process, exploiting H$_\alpha$ in star-forming regions and $D_n4000$ in zones identified as AGN/LI(N)ER or lineless according to the BPT diagram. This enables a complete view of how radial profiles of specific star formation rate depend on stellar mass, galaxy structure and environment, providing valuable clues about the nature of both secular and environmental quenching processes. We report on the existence of `Centrally Suppressed' galaxies, which have lower SSFR in their cores compared to their disks. The profiles of centrally suppressed and unsuppressed galaxies are distributed in a bimodal way, with very few galaxies having intermediate profile shapes. Galaxies with large stellar masses and central velocity dispersions are much more likely to be centrally-suppressed than low-mass galaxies, a result linked to their morphology and the presence of AGN/LI(N)ER like emission. Centrally suppressed galaxies also display lower star formation at all radii compared to unsuppressed galaxies. Independent of galaxy type, galaxies identified as satellites in larger dark matter halos have noticeably lower SSFR at outer radii compared to central galaxies. This uniform suppression could be a signal of the stripping of hot gas reservoirs through a process like strangulation. We find that satellites are not more likely to be suppressed in their cores than centrals, indicating that core suppression is an entirely secular process. We find no secondary correlation between the local environment density and the profiles of star formation rate surface density.}, added-at = {2017-10-17T10:40:00.000+0200}, author = {Spindler, Ashley and Wake, David and Belfiore, Francesco and Bershady, Matthew and Bundy, Kevin and Drory, Niv and Law, David R. and Masters, Karen and Sánchez-Gallego, José R. and Thomas, Daniel and Westfall, Kyle and Wild, Vivienne}, biburl = {https://www.bibsonomy.org/bibtex/21eed14e557efce01c0a053c2c1a73303/miki}, description = {[1710.05049] SDSS-IV MaNGA: The Spatial Distribution of Star Formation and its Dependence on Mass, Structure and Environment}, interhash = {daadefccad2391ccb09a9a301c1fe99d}, intrahash = {1eed14e557efce01c0a053c2c1a73303}, keywords = {environment manga mass quenching}, note = {cite arxiv:1710.05049Comment: 22 pages, 20 figures, 2 tables, Submitted to MNRAS}, timestamp = {2017-10-17T10:40:00.000+0200}, title = {SDSS-IV MaNGA: The Spatial Distribution of Star Formation and its Dependence on Mass, Structure and Environment}, url = {http://arxiv.org/abs/1710.05049}, year = 2017 }