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تسجيل مستخدم جديدStellar Mass Profiles of Quiescent Galaxies in Different Environments at $zsim0$
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We present the stellar mass profiles of 147 isolated quiescent galaxies in very low-density environments (i.e., void regions) in the local Universe ($0.01<z<0.06$) from the Sloan Digital Sky Survey. These galaxies have stellar masses between $ 9.8lesssim log(M_{ast}/M_{odot})lesssim11.2$ and they represent $sim15%$ of the whole galaxy population in the void regions down to $M_{r} = -19$. We do not find any isolated quiescent galaxies with $log(M_{ast}/M_{odot})gtrsim11.2$. We compare the stellar mass profiles of these isolated quiescent galaxies with the profiles of stellar mass-matched samples of the quiescent galaxies in group and cluster environments. We find that, at fixed mass, quiescent galaxies in voids have similar central ($1$ kpc) mass densities ($Sigma_1$) and central velocity dispersions ($sigma_1$) compared to their counterparts in groups and clusters. We show that quiescent galaxies in voids have at most $10-25%$ smaller half-mass (and half-light) sizes compared to quiescent galaxies in groups and clusters. We conclude that for the intermediate stellar mass range of $10^{10}-10^{11}M_{odot}$ in the local Universe, environmental mechanisms have no significant additional effect on the mass profiles of the quiescent galaxies.
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