THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S4G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE

Heikki Salo; Eija Laurikainen; Jarkko Laine; Sebastien Comerón; Dimitri A. Gadotti; Ron Buta; Kartik Sheth; Dennis Zaritsky; Luis Ho; Johan Knapen; E. Athanassoula; Albert Bosma; Seppo Laine; Mauricio Cisternas; Taehyun Kim; Juan Carlos Muñoz-Mateos; Michael Regan; Joannah L. Hinz; Armando Gil De Paz; Karin Menendez-Delmestre; Trisha Mizusawa; Santiago Erroz-Ferrer; Sharon E. Meidt; Miguel Querejeta

doi:10.1088/0067-0049/219/1/4

THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S⁴G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE

Heikki Salo, Eija Laurikainen, Jarkko Laine, Sebastien Comerón, Dimitri A. Gadotti, Ron Buta, Kartik Sheth, Dennis Zaritsky, Luis Ho, Johan Knapen, E. Athanassoula, Albert Bosma, Seppo Laine, Mauricio Cisternas, Taehyun Kim, Juan Carlos Muñoz-Mateos, Michael Regan, Joannah L. Hinz, Armando Gil De Paz, Karin Menendez-DelmestreTrisha Mizusawa, Santiago Erroz-Ferrer, Sharon E. Meidt, Miguel Querejeta

Research output: Contribution to journal › Review article › peer-review

223 Scopus citations

Abstract

The 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.

Original language	English (US)
Article number	4
Journal	Astrophysical Journal, Supplement Series
Volume	219
Issue number	1
DOIs	https://doi.org/10.1088/0067-0049/219/1/4
State	Published - Jul 20 2015

Keywords

fundamental parameters
galaxies: kinematics and dynamics
galaxies: spiral
galaxies: structure

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0067-0049/219/1/4

Cite this

Salo, H., Laurikainen, E., Laine, J., Comerón, S., Gadotti, D. A., Buta, R., Sheth, K., Zaritsky, D., Ho, L., Knapen, J., Athanassoula, E., Bosma, A., Laine, S., Cisternas, M., Kim, T., Muñoz-Mateos, J. C., Regan, M., Hinz, J. L., De Paz, A. G., ... 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), Article 4. https://doi.org/10.1088/0067-0049/219/1/4

Salo, H, Laurikainen, E, Laine, J, Comerón, S, Gadotti, DA, Buta, R, Sheth, K, Zaritsky, D, Ho, L, Knapen, J, Athanassoula, E, Bosma, A, Laine, S, Cisternas, M, Kim, T, Muñoz-Mateos, JC, Regan, M, Hinz, JL, De Paz, AG, Menendez-Delmestre, K, Mizusawa, T, Erroz-Ferrer, S, Meidt, SE & Querejeta, M 2015, 'THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S⁴G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE', Astrophysical Journal, Supplement Series, vol. 219, no. 1, 4. https://doi.org/10.1088/0067-0049/219/1/4

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title = "THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S4G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE",

abstract = "The 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 S{\'e}rsic fits, and 2-component S{\'e}rsic 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 S{\'e}rsic 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.",

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author = "Heikki Salo and Eija Laurikainen and Jarkko Laine and Sebastien Comer{\'o}n and Gadotti, {Dimitri A.} and Ron Buta and Kartik Sheth and Dennis Zaritsky and Luis Ho and Johan Knapen and E. Athanassoula and Albert Bosma and Seppo Laine and Mauricio Cisternas and Taehyun Kim and Mu{\~n}oz-Mateos, {Juan Carlos} and Michael Regan and Hinz, {Joannah L.} and {De Paz}, {Armando Gil} and Karin Menendez-Delmestre and Trisha Mizusawa and Santiago Erroz-Ferrer and Meidt, {Sharon E.} and Miguel Querejeta",

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T2 - MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE

AU - Salo, Heikki

AU - Laurikainen, Eija

AU - Laine, Jarkko

AU - Comerón, Sebastien

AU - Gadotti, Dimitri A.

AU - Buta, Ron

AU - Sheth, Kartik

AU - Zaritsky, Dennis

AU - Ho, Luis

AU - Knapen, Johan

AU - Athanassoula, E.

AU - Bosma, Albert

AU - Laine, Seppo

AU - Cisternas, Mauricio

AU - Kim, Taehyun

AU - Muñoz-Mateos, Juan Carlos

AU - Regan, Michael

AU - Hinz, Joannah L.

AU - De Paz, Armando Gil

AU - Menendez-Delmestre, Karin

AU - Mizusawa, Trisha

AU - Erroz-Ferrer, Santiago

AU - Meidt, Sharon E.

AU - Querejeta, Miguel

PY - 2015/7/20

Y1 - 2015/7/20

N2 - The 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.

AB - The 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.

KW - fundamental parameters

KW - galaxies: kinematics and dynamics

KW - galaxies: spiral

KW - galaxies: structure

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DO - 10.1088/0067-0049/219/1/4

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ER -

THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S⁴G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE

Abstract

Keywords

ASJC Scopus subject areas

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S4G pipeline 4: multi-component decompositions

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THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S4G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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Fingerprint

Datasets

S4G pipeline 4: multi-component decompositions

Cite this

THE SPITZER SURVEY of STELLAR STRUCTURE in GALAXIES (S⁴G): MULTI-COMPONENT DECOMPOSITION STRATEGIES and DATA RELEASE