Mid-IR galaxy morphology from S^4^G

DOI

Spitzer Space Telescope Infrared Array Camera imaging provides an opportunity to study all known morphological types of galaxies in the mid-IR at a depth significantly better than ground-based near-infrared and optical images. The goal of this study is to examine the imprint of the de Vaucouleurs classification volume in the 3.6um band, which is the best Spitzer waveband for galactic stellar mass morphology owing to its depth and its reddening-free sensitivity mainly to older stars. For this purpose, we have prepared classification images for 207 galaxies from the Spitzer archive, most of which are formally part of the Spitzer Survey of Stellar Structure in Galaxies (S^4^G), a Spitzer post-cryogenic ("warm") mission Exploration Science Legacy Program survey of 2331 galaxies closer than 40Mpc. For the purposes of morphology, the galaxies are interpreted as if the images are blue light, the historical waveband for classical galaxy classification studies. We find that 3.6um classifications are well correlated with blue-light classifications, to the point where the essential features of many galaxies look very similar in the two very different wavelength regimes. We present an atlas of all of the 207 galaxies analyzed here and bring attention to special features or galaxy types, such as nuclear rings, pseudobulges, flocculent spiral galaxies, I0 galaxies, double-stage and double-variety galaxies, and outer rings, that are particularly distinctive in the mid-IR.

Cone search capability for table J/ApJS/190/147/table1 (3.6 micron morphological classifications)

Identifier
DOI http://doi.org/10.26093/cds/vizier.21900147
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJS/190/147
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/190/147
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/190/147
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJS/190/147
Provenance
Creator Buta R.J.; Sheth K.; Regan M.; Hinz J.L.; Gil De Paz A.,Menendez-Delmestre K.; Munoz-Mateos J.-C.; Seibert M.; Laurikainen E.,Salo H.; Gadotti D.A.; Athanassoula E.; Bosma A.; Knapen J.H.; Ho L.C.,Madore B.F.; Elmegreen D.M.; Masters K.L.; Comeron S.; Aravena M.; Kim T.
Publisher CDS
Publication Year 2010
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics