SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI)
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...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
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Oxford University Press
2017
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| Online Access: | https://eprints.nottingham.ac.uk/39628/ |
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| author | Johnston, Evelyn J. Häußler, Boris Aragón-Salamanca, Alfonso Merrifield, Michael R. Bamford, Steven Bershady, Matthew A. Bundy, Kevin Drory, Niv Fu, Hai Law, David Nitschelm, Christian Thomas, Daniel Roman Lopes, Alexandre Wake, David Yan, Renbin |
| author_facet | Johnston, Evelyn J. Häußler, Boris Aragón-Salamanca, Alfonso Merrifield, Michael R. Bamford, Steven Bershady, Matthew A. Bundy, Kevin Drory, Niv Fu, Hai Law, David Nitschelm, Christian Thomas, Daniel Roman Lopes, Alexandre Wake, David Yan, Renbin |
| author_sort | Johnston, Evelyn J. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T19:39:05Z |
| format | Article |
| id | nottingham-39628 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:39:05Z |
| publishDate | 2017 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-396282020-05-04T18:34:00Z https://eprints.nottingham.ac.uk/39628/ SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) Johnston, Evelyn J. Häußler, Boris Aragón-Salamanca, Alfonso Merrifield, Michael R. Bamford, Steven Bershady, Matthew A. Bundy, Kevin Drory, Niv Fu, Hai Law, David Nitschelm, Christian Thomas, Daniel Roman Lopes, Alexandre Wake, David Yan, Renbin 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. Oxford University Press 2017-02-21 Article PeerReviewed Johnston, Evelyn J., Häußler, Boris, Aragón-Salamanca, Alfonso, Merrifield, Michael R., Bamford, Steven, Bershady, Matthew A., Bundy, Kevin, Drory, Niv, Fu, Hai, Law, David, Nitschelm, Christian, Thomas, Daniel, Roman Lopes, Alexandre, Wake, David and Yan, Renbin (2017) SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI). Monthly Notices of the Royal Astronomical Society, 465 (2). pp. 2317-2341. ISSN 0035-8711 galaxies: bulges galaxies: evolution ; galaxies: formation ; galaxies: stellar content ; galaxies: structure http://mnras.oxfordjournals.org/content/465/2/2317 doi:10.1093/mnras/stw2823 doi:10.1093/mnras/stw2823 |
| spellingShingle | galaxies: bulges galaxies: evolution ; galaxies: formation ; galaxies: stellar content ; galaxies: structure Johnston, Evelyn J. Häußler, Boris Aragón-Salamanca, Alfonso Merrifield, Michael R. Bamford, Steven Bershady, Matthew A. Bundy, Kevin Drory, Niv Fu, Hai Law, David Nitschelm, Christian Thomas, Daniel Roman Lopes, Alexandre Wake, David Yan, Renbin SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title | SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title_full | SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title_fullStr | SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title_full_unstemmed | SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title_short | SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) |
| title_sort | sdss-iv manga: bulge–disc decomposition of ifu data cubes (buddi) |
| topic | galaxies: bulges galaxies: evolution ; galaxies: formation ; galaxies: stellar content ; galaxies: structure |
| url | https://eprints.nottingham.ac.uk/39628/ https://eprints.nottingham.ac.uk/39628/ https://eprints.nottingham.ac.uk/39628/ |