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dc.contributor.authorWilkinson, David M.
dc.contributor.authorMaraston, Claudia
dc.contributor.authorThomas, Daniel
dc.contributor.authorCoccato, Lodovico
dc.contributor.authorTojeiro, Rita
dc.contributor.authorCappellari, Michele
dc.contributor.authorBelfiore, Francesco
dc.contributor.authorBershady, Matthew
dc.contributor.authorBlanton, Mike
dc.contributor.authorBundy, Kevin
dc.contributor.authorCales, Sabrina
dc.contributor.authorCherinka, Brian
dc.contributor.authorDrory, Niv
dc.contributor.authorEmsellem, Eric
dc.contributor.authorFu, Hai
dc.contributor.authorLaw, David
dc.contributor.authorLi, Cheng
dc.contributor.authorMaiolino, Roberto
dc.contributor.authorMasters, Karen
dc.contributor.authorTremonti, Christy
dc.contributor.authorWake, David
dc.contributor.authorWang, Enci
dc.contributor.authorWeijmans, Anne-Marie
dc.contributor.authorXiao, Ting
dc.contributor.authorYan, Renbin
dc.contributor.authorZhang, Kai
dc.contributor.authorBizyaev, Dmitry
dc.contributor.authorBrinkmann, Jonathan
dc.contributor.authorKinemuchi, Karen
dc.contributor.authorMalanushenko, Elena
dc.contributor.authorMalanushenko, Viktor
dc.contributor.authorOravetz, Daniel
dc.contributor.authorPan, Kaike
dc.contributor.authorSimmons, Audrey
dc.identifier.citationWilkinson , D M , Maraston , C , Thomas , D , Coccato , L , Tojeiro , R , Cappellari , M , Belfiore , F , Bershady , M , Blanton , M , Bundy , K , Cales , S , Cherinka , B , Drory , N , Emsellem , E , Fu , H , Law , D , Li , C , Maiolino , R , Masters , K , Tremonti , C , Wake , D , Wang , E , Weijmans , A-M , Xiao , T , Yan , R , Zhang , K , Bizyaev , D , Brinkmann , J , Kinemuchi , K , Malanushenko , E , Malanushenko , V , Oravetz , D , Pan , K & Simmons , A 2015 , ' P-MaNGA : full spectral fitting and stellar population maps from prototype observations ' , Monthly Notices of the Royal Astronomical Society , vol. 449 , no. 1 , pp. 328-360 .
dc.identifier.otherPURE: 173639356
dc.identifier.otherPURE UUID: 48f9d9ac-781a-4903-ad20-ec38a1143101
dc.identifier.otherBibCode: 2015arXiv150301124W
dc.identifier.otherScopus: 84929995064
dc.identifier.otherORCID: /0000-0002-5908-6852/work/40233501
dc.identifier.otherWOS: 000355345600025
dc.descriptionMC acknowledges support from a Royal Society University Research Fellowship.en
dc.description.abstractMaNGA (Mapping Nearby Galaxies at Apache Point Observatory) is a 6-yearSDSS-IV survey that will obtain resolved spectroscopy from 3600 Å to10300 Å for a representative sample of over 10,000 nearby galaxies.In this paper, we derive spatially resolved stellar population properties and radial gradients by performing full spectral fitting of observed galaxy spectra from P-MaNGA, a prototype of the MaNGA instrument. These data include spectra for eighteen galaxies, covering a large range of morphological type. We derive age, metallicity, dust and stellar mass maps, and their radial gradients, using high spectral-resolution stellar population models, and assess the impact of varying the stellar library input to the models. We introduce a method to determine dust extinction which is able to give smooth stellar mass maps even in cases of high and spatially non-uniform dust attenuation.With the spectral fitting we produce detailed maps of stellar population properties which allow us to identify galactic features among this diverse sample such as spiral structure, smooth radial profiles with little azimuthal structure in spheroidal galaxies, and spatially distinct galaxy sub-components. In agreement with the literature, we find the gradients for galaxies identified as early-type to be on average flat in age, and negative (- 0.15 dex / Re ) in metallicity,whereas the gradients for late-type galaxies are on average negative in age (- 0.39 dex / Re ) and flat in metallicity. We demonstrate howdifferent levels of data quality change the precision with which radialgradients can be measured. We show how this analysis, extended to thelarge numbers of MaNGA galaxies, will have the potential to shed lighton galaxy structure and evolution.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record: Wilkinson, D. M., Maraston, C., Thomas, D., Coccato, L., et al. (2015). P-MaNGA: full spectral fitting and stellar population maps from prototype observations. Monthly Notices of the Royal Astronomical Society, is available online at:
dc.subjectTechniques: spectroscopicen
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: formationen
dc.subjectGalaxies: generalen
dc.subjectGalaxies: stellar contenten
dc.subjectGalaxies: structureen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleP-MaNGA : full spectral fitting and stellar population maps from prototype observationsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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