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dc.contributor.authorSaito, Roberto K.
dc.contributor.authorMinniti, Dante
dc.contributor.authorIvanov, Valentin D.
dc.contributor.authorMasetti, Nicola
dc.contributor.authorNavarro, Maria Gabriela
dc.contributor.authorFernandes, Roberto Cid
dc.contributor.authorRuschel-Dutra, Daniel
dc.contributor.authorSmith, Leigh C.
dc.contributor.authorLucas, Philip W.
dc.contributor.authorGonzalez-Fernandez, Carlos
dc.contributor.authorRamos, Rodrigo Contreras
dc.date.accessioned2019-10-16T00:10:07Z
dc.date.available2019-10-16T00:10:07Z
dc.date.issued2019-09-20
dc.identifier.citationSaito , R K , Minniti , D , Ivanov , V D , Masetti , N , Navarro , M G , Fernandes , R C , Ruschel-Dutra , D , Smith , L C , Lucas , P W , Gonzalez-Fernandez , C & Ramos , R C 2019 , ' VVV-WIT-04: an extragalactic variable source caught by the VVV Survey ' , Monthly Notices of the Royal Astronomical Society , vol. 490 , no. 1 , pp. 1171-1178 . https://doi.org/10.1093/mnras/stz2631
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 17397117
dc.identifier.otherPURE UUID: a5d548bf-1409-4000-8c05-d7c11721d111
dc.identifier.otherArXiv: http://arxiv.org/abs/1909.07516v1
dc.identifier.otherORCID: /0000-0002-8872-4462/work/63352153
dc.identifier.otherScopus: 85075234215
dc.identifier.urihttp://hdl.handle.net/2299/21745
dc.description8 pages, 5 figures. Accepted for publication in MNRAS
dc.description.abstractWe report the discovery of VVV-WIT-04, a near-infrared (near-IR) variable source towards the Galactic disc located ∼0.2 arcsec apart from the position of the radio source PMN J1515−5559. The object was found serendipitously in the near-IR data of the ESO public survey VISTA Variables in the Vía Láctea (VVV). Our analysis is based on variability, multicolour, and proper motion data from VVV and VVV eXtended surveys, complemented with archive data at longer wavelengths. We suggest that VVV-WIT-04 has an extragalactic origin as the near-IR counterpart of PMN J1515−5559. The K s-band light curve of VVV-WIT-04 is highly variable and consistent with that of an optically violent variable quasar. The variability in the near-IR can be interpreted as the redshifted optical variability. Residuals to the proper motion vary with the magnitude suggesting contamination by a blended source. Alternative scenarios, including a transient event such as a nova or supernova, or even a binary microlensing event, are not in agreement with the available data.en
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.GA
dc.subjectSurveys
dc.subjectInfrared: stars
dc.subjectRadio continuum: galaxies
dc.subjectRadio continuum: general
dc.subjectStars: individual: VVV-WIT-04
dc.subjectCatalogues
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleVVV-WIT-04: an extragalactic variable source caught by the VVV Surveyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85075234215&partnerID=8YFLogxK
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stz2631
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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