TY - JOUR
T1 - A local leaky-box model for the local stellar surface density gas surface density gas phase metallicity relation
AU - Zhu, Guangtun Ben
AU - Barrera-Ballesteros, Jorge K.
AU - Heckman, Timothy M.
AU - Zakamska, Nadia L.
AU - Zakamska, Nadia L.
AU - Sanchez, Sebastian F.
AU - Yan, Renbin
AU - Brinkmann, Jonathan
N1 - Publisher Copyright:
© 2017 The Authors.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - We revisit the relation between the stellar surface density, the gas surface density and the gas-phase metallicity of typical disc galaxies in the local Universe with the SDSS-IV/MaNGA survey, using the star formation rate surface density as an indicator for the gas surface density. We show that these three local parameters form a tight relationship, confirming previous works (e.g. by the PINGS and CALIFA surveys), but with a larger sample. We present a new local leaky-box model, assuming star-formation history and chemical evolution is localized except for outflowing materials. We derive closed-form solutions for the evolution of stellar surface density, gas surface density and gas-phase metallicity, and show that these parameters form a tight relation independent of initial gas density and time. We show that, with canonical values of model parameters, this predicted relation match the observed one well. In addition, we briefly describe a pathway to improving the current semi-analytic models of galaxy formation by incorporating the local leaky-box model in the cosmological context, which can potentially explain simultaneously multiple properties of Milky Way-type disc galaxies, such as the size growth and the global stellar mass gas metallicity relation.
AB - We revisit the relation between the stellar surface density, the gas surface density and the gas-phase metallicity of typical disc galaxies in the local Universe with the SDSS-IV/MaNGA survey, using the star formation rate surface density as an indicator for the gas surface density. We show that these three local parameters form a tight relationship, confirming previous works (e.g. by the PINGS and CALIFA surveys), but with a larger sample. We present a new local leaky-box model, assuming star-formation history and chemical evolution is localized except for outflowing materials. We derive closed-form solutions for the evolution of stellar surface density, gas surface density and gas-phase metallicity, and show that these parameters form a tight relation independent of initial gas density and time. We show that, with canonical values of model parameters, this predicted relation match the observed one well. In addition, we briefly describe a pathway to improving the current semi-analytic models of galaxy formation by incorporating the local leaky-box model in the cosmological context, which can potentially explain simultaneously multiple properties of Milky Way-type disc galaxies, such as the size growth and the global stellar mass gas metallicity relation.
KW - Galaxies: abundances
KW - Galaxies: evolution
KW - Galaxies: spiral
KW - Galaxies: star formation
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U2 - 10.1093/mnras/stx740
DO - 10.1093/mnras/stx740
M3 - Article
AN - SCOPUS:85027361985
SN - 0035-8711
VL - 468
SP - 4494
EP - 4501
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -