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Characterization of the VVV Survey RR Lyrae Population across the Southern Galactic Plane

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contributor authorMinniti, Dante
contributor authorDékány, Istvan
contributor authorMajaess, Daniel
contributor authorPalma, Tali
contributor authorPullen, Joyce
contributor authorRejkuba, Marina
contributor authorAlonso-García, Javier
contributor authorCatelan, Marcio
contributor authorRamos, Rodrigo Contreras
contributor authorGonzalez, Oscar A.
contributor authorHempel, Maren
contributor authorIrwin, Mike
contributor authorLucas, Philip W.
contributor authorSaito, Roberto K.
contributor authorTissera, Patricia
contributor authorValenti, Elena
contributor authorZoccali, Manuela
date accessioned2017-11-14T17:56:23Z
date available2017-11-14T17:56:23Z
date issued2017-03-27
identifier citationMinniti , D , Dékány , I , Majaess , D , Palma , T , Pullen , J , Rejkuba , M , Alonso-García , J , Catelan , M , Ramos , R C , Gonzalez , O A , Hempel , M , Irwin , M , Lucas , P W , Saito , R K , Tissera , P , Valenti , E & Zoccali , M 2017 , ' Characterization of the VVV Survey RR Lyrae Population across the Southern Galactic Plane ' The Astronomical Journal , vol 153 , no. 4 . DOI: 10.3847/1538-3881/aa5be4en
identifier issn0004-6256
identifier otherPURE: 12532729
identifier otherPURE UUID: 180c064e-9068-4e37-8908-984107833815
identifier otherArXiv: http://arxiv.org/abs/1703.01711v1
identifier urihttp://hdl.handle.net/2299/19521
descriptionThis is an author created, un-copyedited version of an article published in The Astronomical Journal. Under embargo. Embargo end date: 27 March 2018. IOP Publishing is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: https://doi.org/10.3847/1538-3881/aa5be4.en
description abstractDeep near-IR images from the VISTA Variables in the Vía Láctea (VVV) Survey were used to search for RR Lyrae stars in the Southern Galactic plane. A sizable sample of 404 RR Lyrae of type ab stars was identified across a thin slice of the fourth Galactic quadrant (295° < ℓ < 350°, −2°.24 < b < −1°.05). The sample’s distance distribution exhibits a maximum density that occurs at the bulge tangent point, which implies that this primarily Oosterhoff type I population of RRab stars does not trace the bar delineated by their red clump counterparts. The bulge RR Lyrae population does not extend beyond ℓ ∼ 340°, and the sample’s spatial distribution presents evidence of density enhancements and substructure that warrants further investigation. Indeed, the sample may be employed to evaluate Galactic evolution models, and is particularly lucrative since half of the discovered RR Lyrae are within reach of Gaia astrometric observations.en
format extent10en
language isoeng
relation ispartofThe Astronomical Journalen
rightsen
subjectastro-ph.GAen
subjectastro-ph.SRen
titleCharacterization of the VVV Survey RR Lyrae Population across the Southern Galactic Planeen
typeArticleen
contributor institutionCentre for Astrophysics Researchen
contributor institutionSchool of Physics, Astronomy and Mathematicsen
identifier doihttp://dx.doi.org/10.3847/1538-3881/aa5be4
description statusPeer revieweden
date embargoedUntil27-03-20


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