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The Spitzer Survey of Stellar Structure in Galaxies (SG): Precise Stellar Mass Distributions from Automated Dust Correction at 3.6 microns
M. Querejeta, S. E. Meidt, E. Schinnerer +26
The mid-infrared is an optimal window to trace stellar mass in nearby galaxies and the 3.6 IRAC band has been exploited to this effect, but such mass estimates can be biased by…
The role of bars in AGN fueling in disk galaxies over the last seven billion years
Mauricio Cisternas, Kartik Sheth, Mara Salvato +3
We present empirical constraints on the influence of stellar bars on the fueling of active galactic nuclei (AGNs) out to z=0.84 using a sample of X-ray-selected AGNs hosted in lumi…
IRAC Near-Infrared Features in the Outer Parts of S4G Galaxies
Seppo Laine, Johan H. Knapen, Juan-Carlos Munoz-Mateos +26
We present a catalogue and images of visually detected features, such as asymmetries, extensions, warps, shells, tidal tails, polar rings, and obvious signs of mergers or interacti…
Optical imaging for the Spitzer Survey of Stellar Structure in Galaxies. Data release and notes on interacting galaxies
Johan H. Knapen, Santiago Erroz-Ferrer, Javier Roa +4
(Abridged) The Spitzer Survey for Stellar Structure in Galaxies (S4G) and its more recently approved extension will lead to a set of 3.6 and 4.5 micron images for 2829 galaxies, wh…
The Baryonic Tully-Fisher Relationship for SG Galaxies and the "Condensed" Baryon Fraction of Galaxies
Dennis Zaritsky, Helene Courtois, Juan-Carlos Muñoz-Mateos +20
We combine data from the Spitzer Survey for Stellar Structure in Galaxies (SG), a recently calibrated empirical stellar mass estimator from Eskew et al., and an extensive datab…
Reconstructing the stellar mass distributions of galaxies using S4G IRAC 3.6 and 4.5 micron images: II. The conversion from light to mass
Sharon E. Meidt, Eva Schinnerer, Glenn van de Ven +26
We present a new approach for estimating the 3.6 micron stellar mass-to-light ratio in terms of the [3.6]-[4.5] colors of old stellar populations. Our approach avoids several of th…