RT Journal Article
T1 Variable metallicity yields as tracers of inflows
A1 Camps Fariña, Artemi
A1 Sánchez Blázquez, Patricia
A1 Roca Fábrega, Santi
A1 Sánchez-Fortún Rodríguez, Sebastián
AB Pristine gas accretion is expected to be the main driver of sustained star formation in galaxies. We measure the required amount of accreted gas at each moment over a galaxy’s history to produce the observed metallicity at that time given its star-forming history. More massive galaxies tend to have higher accretion rates and a larger drop of the accretion rate towards the present time. Within the same mass bin galaxies that are currently star-forming or in the Green Valley have similar, sustained, accretion histories while retired galaxies had a steep decline in the past. Plotting the T80 of the individual accretion histories, a measure of how sustained they are, versus the stellar mass and current sSFR we see a distribution such that currently star-forming galaxies have sustained or recent accretion and retired galaxies have declined accretion histories.
PB Cambridge University Press
SN 1743-9213
YR 2023
FD 2023-06-09
LK https://hdl.handle.net/20.500.14352/102818
UL https://hdl.handle.net/20.500.14352/102818
LA eng
NO Camps-Fariña, A. et al. (2021) ‘Variable metallicity yields as tracers of inflows’, Proceedings of the International Astronomical Union, 17(S373), pp. 246–248. doi:10.1017/S1743921322003982.
NO 2023 Acuerdos transformativos CRUE
DS Docta Complutense
RD 8 abr 2025