Galaxy size at fixed stellar mass encodes the link between long-term gas inflow histories, current inner gas reservoirs, and metallicity via differences in assembly timing.
A catalog of bulge, disk, and total stellar mass estimates for the Sloan Digital Sky Survey
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abstract
We present a catalog of bulge, disk, and total stellar mass estimates for ~660,000 galaxies in the Legacy area of the Sloan Digital Sky Survey Data Release 7. These masses are based on a homogeneous catalog of g- and r-band photometry described by Simard et al. (2011), which we extend here with bulge+disk and Sersic profile photometric decompositions in the SDSS u, i, and z bands. We discuss the methodology used to derive stellar masses from these data via fitting to broadband spectral energy distributions (SEDs), and show that the typical statistical uncertainty on total, bulge, and disk stellar mass is ~0.15 dex. Despite relatively small formal uncertainties, we argue that SED modeling assumptions, including the choice of synthesis model, extinction law, initial mass function, and details of stellar evolution likely contribute an additional 60% systematic uncertainty in any mass estimate based on broadband SED fitting. We discuss several approaches for identifying genuine bulge+disk systems based on both their statistical likelihood and an analysis of their one-dimensional surface-brightness profiles, and include these metrics in the catalogs. Estimates of the total, bulge and disk stellar masses for both normal and dust-free models and their uncertainties are made publicly available here.
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UNVERDICTED 3representative citing papers
New high-redshift quiescent galaxy sample shows size decreasing with redshift and wavelength, with stellar mass plus redshift sufficient to predict size but large residual scatter.
FR0 radio galaxies are abundant compact sources whose small sizes challenge standard evolutionary models, and SKA observations are expected to clarify their jet physics and demographics.
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Beyond the Fundamental Metallicity Relation: galaxy sizes encode the link between inflow and metallicity
Galaxy size at fixed stellar mass encodes the link between long-term gas inflow histories, current inner gas reservoirs, and metallicity via differences in assembly timing.
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Morphology, sizes, and scatter in a large sample of distant quiescent galaxies
New high-redshift quiescent galaxy sample shows size decreasing with redshift and wavelength, with stellar mass plus redshift sufficient to predict size but large residual scatter.
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Compact radio galaxies: the case of FR0s
FR0 radio galaxies are abundant compact sources whose small sizes challenge standard evolutionary models, and SKA observations are expected to clarify their jet physics and demographics.