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dc.contributor.authorSalo, Heikki J.
dc.contributor.authorLaurikainen, Eija
dc.contributor.authorLaine, Jarkko
dc.contributor.authorComerón, Sébastien
dc.contributor.authorGadotti, Dimitri Alexei
dc.contributor.authorButa, Ronald J.
dc.contributor.authorSheth, Kartik
dc.contributor.authorZaritsky, Dennis
dc.contributor.authorHo, Luis
dc.contributor.authorMizusawa, Trisha
dc.date.accessioned2017-10-06T18:12:28Z
dc.date.available2017-10-06T18:12:28Z
dc.date.issued2015-07-20
dc.identifier.citationSalo, H., Laurikainen, E., Laine, J., Comerón, S., Gadotti, D. A., Buta, R., . . . Querejeta, M. (2015). THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S4G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE. Astrophysical Journal, Supplement Series, 219(1)en_US
dc.identifier.urihttp://hdl.handle.net/11141/1828
dc.descriptionfundamental parameters galaxies: kinematics and dynamics galaxies: spiral galaxies: structureen_US
dc.description.abstractThe Spitzer Survey of Stellar Structure in Galaxies (S4G) is a deep 3.6 and 4.5 μm imaging survey of 2352 nearby (<40 Mpc) galaxies. We describe the S4G data analysis pipeline 4, which is dedicated to two-dimensional structural surface brightness decompositions of 3.6 μm images, using GALFIT3.0. Besides automatic 1-component Sérsic fits, and 2-component Sérsic bulge + exponential disk fits, we present human-supervised multi-component decompositions, which include, when judged appropriate, a central point source, bulge, disk, and bar components. Comparison of the fitted parameters indicates that multi-component models are needed to obtain reliable estimates for the bulge Sérsic index and bulge-to-total light ratio (B/T), confirming earlier results. Here, we describe the preparations of input data done for decompositions, give examples of our decomposition strategy, and describe the data products released via IRSA and via our web page (www.oulu.fi/astronomy/S4G-PIPELINE4/MAIN). These products include all the input data and decomposition files in electronic form, making it easy to extend the decompositions to suit specific science purposes. We also provide our IDL-based visualization tools (GALFIDL) developed for displaying/running GALFIT-decompositions, as well as our mask editing procedure (MASK-EDIT) used in data preparation. A detailed analysis of the bulge, disk, and bar parameters derived from multi-component decompositions will be published separately. © 2015. The American Astronomical Society. All rights reserved.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publishers policy. It may be subject to U.S. copyright law. © 2015. The American Astronomical Society. All rights reserved.en_US
dc.rights.urihttps://aas.org/publications/aas-copyright-policyen_US
dc.titleTHE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S4G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASEen_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0067-0049/219/1/4


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