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Date and Time of the Query: 2019-02-18 T03:13:58 PST
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For refcode 2015ApJS..219....4S:
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2015ApJS..219....4S The Spitzer Survey of Stellar Structure in Galaxies (S^4^G): Multi-component Decomposition Strategies and Data Release Salo, Heikki; Laurikainen, Eija; Laine, Jarkko; Comeron, Sebastien; Gadotti, Dimitri A.; Buta, Ron; Sheth, Kartik; Zaritsky, Dennis; Ho, Luis; Knapen, Johan; Athanassoula, E.; Bosma, Albert; Laine, Seppo; Cisternas, Mauricio; Kim, Taehyun; Munoz-Mateos, Juan Carlos; Regan, Michael; Hinz, Joannah L.; Gil de Paz, Armando; Menendez-Delmestre, Karin; Mizusawa, Trisha; Erroz-Ferrer, Santiago; Meidt, Sharon E.; Querejeta, Miguel Abstract. The Spitzer Survey of Stellar Structure in Galaxies (S^4^G) is a deep 3.6 and 4.5 micron imaging survey of 2352 nearby (<40 Mpc) galaxies. We describe the S^4^G data analysis pipeline 4, which is dedicated to two-dimensional structural surface brightness decompositions of 3.6 micron images, using GALFIT3.0. Besides automatic 1-component Sersic fits, and 2-component Sersic 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 Sersic 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. Key words: galaxies: fundamental parameters, galaxies: kinematics and dynamics, galaxies: spiral, galaxies: structure
Retrieve 2352 NED objects in this reference.
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