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dc.contributor.authorAlonso-García, Javier
dc.contributor.authorSaito, Roberto K.
dc.contributor.authorHempel, Maren
dc.contributor.authorMinniti, Dante
dc.contributor.authorPullen, Joyce
dc.contributor.authorCatelan, Márcio
dc.contributor.authorRamos, Rodrigo Contreras
dc.contributor.authorCross, Nicholas J. G.
dc.contributor.authorGonzalez, Oscar A.
dc.contributor.authorLucas, Philip W.
dc.contributor.authorPalma, Tali
dc.contributor.authorValenti, Elena
dc.contributor.authorZoccali, Manuela
dc.date.accessioned2018-12-21T15:03:33Z
dc.date.available2018-12-21T15:03:33Z
dc.date.issued2018-11-01
dc.identifier.citationAlonso-García , J , Saito , R K , Hempel , M , Minniti , D , Pullen , J , Catelan , M , Ramos , R C , Cross , N J G , Gonzalez , O A , Lucas , P W , Palma , T , Valenti , E & Zoccali , M 2018 , ' Milky Way demographics with the VVV survey. IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk ' , Astronomy and Astrophysics , vol. 619 , A4 . https://doi.org/10.1051/0004-6361/201833432
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 15573143
dc.identifier.otherPURE UUID: 03fdf1f1-c3a2-4190-93b4-8d3b798d1f47
dc.identifier.otherArXiv: http://arxiv.org/abs/1808.06139v1
dc.identifier.otherScopus: 85056090200
dc.identifier.otherORCID: /0000-0002-8872-4462/work/62748852
dc.identifier.urihttp://hdl.handle.net/2299/20898
dc.descriptionAccepted for publication in a forthcoming issue of Astronomy & Astrophysics. Reproduced with permission from Astronomy & Astrophysics. © 2018 ESO.
dc.description.abstractContext. The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHK s near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far.en
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.subjectCatalogs
dc.subjectGalaxy: bulge
dc.subjectGalaxy: disk
dc.subjectGalaxy: stellar content
dc.subjectSurveys
dc.subjectTechniques: photometric
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleMilky Way demographics with the VVV survey. IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disken
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85056090200&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201833432
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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