VVV-WIT-04: An extragalactic variable source caught by the VVV Survey

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dc.contributor.authorSaito, R K
dc.contributor.authorMinniti, D
dc.contributor.authorIvanov, V D
dc.contributor.authorMasetti, N
dc.contributor.authorNavarro, M G
dc.contributor.authorFernandes, R Cid
dc.contributor.authorRuschel-Dutra, D
dc.contributor.authorSmith, L C
dc.contributor.authorLucas, P W
dc.contributor.authorGonzalez-Fernandez, C
dc.contributor.authorContreras Ramos, R
dc.date.accessioned2021-11-09T15:04:28Z
dc.date.available2021-11-09T15:04:28Z
dc.date.issued2019-11
dc.descriptionIndexación: Scopuses
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 Ks-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. © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Societyes
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/490/1/1171/5572280
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 490, Issue 1, Pages 1171 - 117821 November 2019es
dc.identifier.doi10.1093/mnras/stz2631
dc.identifier.issn0035-8711
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/20807
dc.language.isoenes
dc.publisherOxford University Presses
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectCatalogueses
dc.subjectInfraredes
dc.subjectstarses
dc.subjectRadio continuumes
dc.subjectgalaxieses
dc.subjectRadio continuumes
dc.subjectgenerales
dc.subjectStarses
dc.subjectindividuales
dc.subjectVVV-WIT-04es
dc.subjectSurveyses
dc.titleVVV-WIT-04: An extragalactic variable source caught by the VVV Surveyes
dc.typeArtículoes
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