A CLASSICAL MORPHOLOGICAL ANALYSIS OF GALAXIES IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S{sup 4}G)

Journal Article · Wed Apr 15 00:00:00 EDT 2015 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/217/2/32· OSTI ID:22520231

Buta, Ronald J. ^[1]; Sheth, Kartik; Muñoz-Mateos, Juan-Carlos; Kim, Taehyun ^[2]; Athanassoula, E.; Bosma, A. ^[3]; Knapen, Johan H. ^[4]; Laurikainen, Eija; Salo, Heikki; Laine, Jarkko; Comerón, Sébastien ^[5]; Elmegreen, Debra ^[6]; Ho, Luis C. ^[7]; Zaritsky, Dennis; Hinz, Joannah L. ^[8]; Courtois, Helene ^[9]; Regan, Michael W. ^[10]; Gadotti, Dimitri A. ^[11]; Paz, Armando Gil de ^[12]; Menéndez-Delmestre, Karín ^[13] ; others, and

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1. Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487-0324 (United States)
2. National Radio Astronomy Observatory/NAASC, 520 Edgemont Road, Charlottesville, VA 22903 (United States)
3. Aix Marseille Universite, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, F-13388, Marseille (France)
4. Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna (Spain)
5. Division of Astronomy, Department of Physical Sciences, University of Oulu, Oulu, FI-90014 (Finland)
6. Vassar College, Deparment of Physics and Astronomy, Poughkeepsie, NY 12604 (United States)
7. Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)
8. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
9. Université Lyon 1, CNRS/IN2P3, Institut de Physique Nucléaire, Lyon (France)
10. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
11. European Southern Observatory, Casilla 19001, Santiago 19 (Chile)
12. Departmento de Astrofisica, Universidad Complutense de Madrid, E-28040 Madrid (Spain)
13. University of Rio de Janeiro, Observatorio de Valongo, Ladeira Pedro Antonio, 43, CEP 20080-090, Rio de Janeiro (Brazil)

The Spitzer Survey of Stellar Structure in Galaxies (S{sup 4}G) is the largest available database of deep, homogeneous middle-infrared (mid-IR) images of galaxies of all types. The survey, which includes 2352 nearby galaxies, reveals galaxy morphology only minimally affected by interstellar extinction. This paper presents an atlas and classifications of S{sup 4}G galaxies in the Comprehensive de Vaucouleurs revised Hubble-Sandage (CVRHS) system. The CVRHS system follows the precepts of classical de Vaucouleurs morphology, modified to include recognition of other features such as inner, outer, and nuclear lenses, nuclear rings, bars, and disks, spheroidal galaxies, X patterns and box/peanut structures, OLR subclass outer rings and pseudorings, bar ansae and barlenses, parallel sequence late-types, thick disks, and embedded disks in 3D early-type systems. We show that our CVRHS classifications are internally consistent, and that nearly half of the S{sup 4}G sample consists of extreme late-type systems (mostly bulgeless, pure disk galaxies) in the range Scd-Im. The most common family classification for mid-IR types S0/a to Sc is SA while that for types Scd to Sm is SB. The bars in these two type domains are very different in mid-IR structure and morphology. This paper examines the bar, ring, and type classification fractions in the sample, and also includes several montages of images highlighting the various kinds of “stellar structures” seen in mid-IR galaxy morphology.

• OSTI ID: 22520231
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 217, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

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