The LEGA-C and SAMI galaxy surveys: quiescent stellar populations and the mass–size plane across 6 Gyr

• DOI: 10.1093/mnras/stac705
• Publication Date: 2022-03-14T12:08:13Z
• Authors: Tania M Barone; Francesco D’Eugenio; Nicholas Scott; Matthew Colless; Sam P Vaughan; Arjen van der Wel; Amelia Fraser-McK...; Anna de Graaff; Jesse van de Sande; Po-Feng Wu(吳柏鋒); Rachel Bezanson; Sarah Brough; Eric Bell; Scott M Croom; Luca Cortese; Simon Driver; Anna R Gallazzi; Adam Muzzin; David Sobral; Joss Bland-Hawthorn; Julia J Bryant; Michael Goodwin; Jon S Lawrence; Nuria P F Lorente; Matt S Owers
• Keywords: Stellar mass; Gravitational potential; Stellar population

We investigate the change in mean stellar population age and metallicity ([Z/H]) scaling relations for quiescent galaxies from intermediate redshift ($0.60\leq z\leq0.76$) using LEGA-C Survey, to low ($0.014\leq z\leq0.10$) SAMI Galaxy Survey. find that, similarly their low-redshift counterparts, of at $0.60\leq z\leq 0.76$ closely correlates with $M_*/R_\mathrm{e}$ (a proxy gravitational potential or escape velocity), that deeper wells are more metal-rich. This supports hypothesis relation arises due regulating retention metals, by determining velocity required metal-rich supernova ejecta system avoid being recycled into later generations. On other hand, we no correlation between $M_*/R_\mathrm{e}^2$ (stellar mass surface density $\Sigma$) sample, despite this a strong redshift. consider age--$\Sigma$ context evolution star-forming populations mass--size plane, our results can be explained as consequence forming compactly higher redshifts, remaining compact throughout evolution. Furthermore, appear quench characteristic decreases decreasing The $z\sim 0$ is therefore result building up formed range redshifts so densities.