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dc.contributor.authorSurot, F.
dc.contributor.authorValenti, Elena
dc.contributor.authorHidalgo, S. L.
dc.contributor.authorZoccali, M.
dc.contributor.authorGonzalez, O. A.
dc.contributor.authorSökmen, E.
dc.contributor.authorMinniti, D.
dc.contributor.authorRejkuba, M.
dc.contributor.authorLucas, P. W.
dc.date.accessioned2019-09-10T00:07:51Z
dc.date.available2019-09-10T00:07:51Z
dc.date.issued2019-09-01
dc.identifier.citationSurot , F , Valenti , E , Hidalgo , S L , Zoccali , M , Gonzalez , O A , Sökmen , E , Minniti , D , Rejkuba , M & Lucas , P W 2019 , ' Mapping the stellar age of the Milky Way bulge with the VVV : II. Deep JK s catalog release based on PSF photometry ' , Astronomy & Astrophysics , vol. 629 , A1 . https://doi.org/10.1051/0004-6361/201935730
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 17347607
dc.identifier.otherPURE UUID: 931d5657-d05a-4395-8c4d-511cd48a8c53
dc.identifier.otherArXiv: http://arxiv.org/abs/1907.01972v1
dc.identifier.otherScopus: 85071670974
dc.identifier.otherORCID: /0000-0002-8872-4462/work/62748879
dc.identifier.urihttp://hdl.handle.net/2299/21664
dc.description.abstractContext. The bulge represents the best compromise between old and massive Galactic components, and as such its study is a valuable opportunity to understand how the bulk of the Milky Way formed and evolved. In addition, being the only bulge in which we can individually resolve stars in all evolutionary sequences, the properties of its stellar content provide crucial insights into the formation of bulges. Aims. We are providing a detailed and comprehensive census of the Milky Way bulge stellar populations by producing deep and accurate photometric catalogs of the inner ∼300 deg 2 of the Galaxy. Methods. We performed DAOPHOT/ALLFRAME point spread function (PSF) fitting photometry of multi-epochs J and K s images provided by the VISTA Variables in the Vía Láctea (VVV) survey to obtain deep photometric catalogs. Artificial star experiments have been conducted on all images to properly assess the completeness and the accuracy of the photometric measurements. Results. We present a photometric database containing nearly 600 million stars across the bulge area surveyed by the VVV. Through the comparison of derived color-magnitude diagrams of selected fields representative of different levels of extinction and crowding, we show the quality, completeness and depth of the new catalogs. With the exception of the fields located along the plane, this new photometry samples stars down to ∼1-2 mag below the old main sequence turnoff with unprecedented accuracy. To demonstrate the tremendous potential inherent to this new dataset, we give a few examples of possible applications, including (i) star count studies through the dataset completeness map; (ii) surface brightness map; and (iii) cross-correlation with Gaia DR2. Conclusions. The database presented here represents an invaluable collection for the whole community, and we encourage its exploitation. The photometric catalogs including completeness information are publicly available through the ESO Science Archive as part of the MW-BULGE-PSPHOT release.en
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysics
dc.rightsOpen
dc.subjectastro-ph.GA
dc.subjectTechniques: photometric
dc.subjectGalaxy: stellar content
dc.subjectGalaxy: bulge
dc.subjectCatalogs
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleMapping the stellar age of the Milky Way bulge with the VVV : II. Deep JK s catalog release based on PSF photometryen
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=85071670974&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2019-09-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201935730
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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