Journal article
SDSS-IV MaNGA: bulge-disc decomposition of IFU data cubes (BUDDI)
Monthly notices of the Royal Astronomical Society, Vol.465(2), pp.2317-2341
02/21/2017
DOI: 10.1093/mnras/stw2823
Abstract
With the availability of large integral field unit (IFU) spectral surveys of nearby galaxies, there is now the potential to extract spectral information from across the bulges and discs of galaxies in a systematic way. This information can address questions such as how these components built up with time, how galaxies evolve and whether their evolution depends on other properties of the galaxy such as its mass or environment. We present bulge-disc decomposition of IFU data cubes (BUDDI), a new approach to fit the two-dimensional light profiles of galaxies as a function of wavelength to extract the spectral properties of these galaxies' discs and bulges. The fitting is carried out using GALFITM, a modified form of GALFIT which can fit multiwaveband images simultaneously. The benefit of this technique over traditional multiwaveband fits is that the stellar populations of each component can be constrained using knowledge over the whole image and spectrum available. The decomposition has been developed using commissioning data from the Sloan Digital Sky Survey-IV Mapping Nearby Galaxies at APO(MaNGA) survey with redshifts z < 0.14 and coverage of at least 1.5 effective radii for a spatial resolution of 2.5 arcsec full width at half-maximum and field of view of > 22 arcsec, but can be applied to any IFU data of a nearby galaxy with similar or better spatial resolution and coverage. We present an overview of the fitting process, the results from our tests, and we finish with example stellar population analyses of early-type galaxies from the MaNGA survey to give an indication of the scientific potential of applying bulge-disc decomposition to IFU data.
Details
- Title: Subtitle
- SDSS-IV MaNGA: bulge-disc decomposition of IFU data cubes (BUDDI)
- Creators
- Evelyn J. Johnston - University of NottinghamBoris Haeussler - European Southern Observ, Alonso de Cordova 3107,Casilla 19001, Santiago, ChileAlfonso Aragon-Salamanca - University of NottinghamMichael R. Merrifield - University of NottinghamSteven Bamford - University of NottinghamMatthew A. Bershady - University of Wisconsin–MadisonKevin Bundy - The University of TokyoNiv Drory - The University of Texas at AustinHai Fu - University of IowaDavid Law - Space Telescope Science InstituteChristian Nitschelm - University of AntofagastaDaniel Thomas - University of PortsmouthAlexandre Roman Lopes - University of La SerenaDavid Wake - The Open UniversityRenbin Yan - University of Kentucky
- Resource Type
- Journal article
- Publication Details
- Monthly notices of the Royal Astronomical Society, Vol.465(2), pp.2317-2341
- Publisher
- Oxford Univ Press
- DOI
- 10.1093/mnras/stw2823
- ISSN
- 0035-8711
- eISSN
- 1365-2966
- Number of pages
- 25
- Grant note
- University of Notre Dame AST-1517006 / NSF; National Science Foundation (NSF) New York University Universidad Nacional Autonoma de Mexico ACI-1440620 / National Science Foundation; National Science Foundation (NSF) University of Utah Harvard-Smithsonian Center for Astrophysics; Smithsonian Institution World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Lawrence Berkeley National Laboratory; United States Department of Energy (DOE) Ohio State University Vanderbilt University 15K17603 / JSPS KAKENHI; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) Marie Curie Actions of the European Commission (FP7-COFUND) Center for High-Performance Computing at the University of Utah National Astronomical Observatory of China Max-Planck-Institut fur Astronomie (MPIA Heidelberg) Carnegie Institution for Science Chilean Participation Group Alfred P. Sloan Foundation Carnegie Mellon University Max-Planck-Institut fur Astrophysik (MPA Garching) United Kingdom Participation Group University of Washington Instituto de Astrofisica de Canarias University of Wisconsin Max-Planck-Institut fur Extraterrestrische Physik (MPE) ST/N000668/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) ST/N000668/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) US Department of Energy Office of Science; United States Department of Energy (DOE) University of Arizona Yale University New Mexico State University Pennsylvania State University University of Oxford University of Portsmouth Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo Brazilian Participation Group French Participation Group NCC5-626 / National Aeronautics and Space Administration's Earth Science Technology Office 1614326 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) University of Colorado Boulder University of Virginia Leibniz Institut fur Astrophysik Potsdam (AIP) Science and Technology Facilities Council (STFC); UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); Science and Technology Development Fund (STDF) Shanghai Astronomical Observatory Observatario Nacional / MCTI Johns Hopkins University
- Language
- English
- Date published
- 02/21/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428801602771
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