Searching for extragalactic sources in the VISTA variables in the VÍa láctea survey

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dc.article.number155
dc.catalogadorvzp
dc.contributor.authorBaravalle, Laura D.
dc.contributor.authorVictoria Alonso, M.
dc.contributor.authorCastellón, José Luis Nilo
dc.contributor.authorBeamin Muhlenbrock, Juan Carlos
dc.contributor.authorMinniti, Dante
dc.date.accessioned2024-03-14T18:33:46Z
dc.date.available2024-03-14T18:33:46Z
dc.date.issued2018
dc.description.abstractWe search for extragalactic sources in the VISTA Variables in the Vía Láctea survey that are hidden by the Galaxy. Herein, we describe our photometric procedure to find and characterize extragalactic objects using a combination of SExtractor and PSFEx. It was applied in two tiles of the survey: d010 and d115, without previous extragalactic IR detections, in order to obtain photometric parameters of the detected sources. The adopted criteria to define extragalactic candidates include CLASS-STAR < 0.3; 1.0 < R1 2 < 5.0 arcsec; 2.1 < C < 5; and F > 0.002 and the colors: 0.5 < (J-Ks) < 2.0 mag; 0.0 < (J-H) < 1.0 mag; 0.0 < (H-Ks) < 2.0 mag and (J-H) + 0.9 (H-Ks) > 0.44 mag. We detected 345 and 185 extragalactic candidates in the d010 and d115 tiles, respectively. All of them were visually inspected and confirmed to be galaxies. In general, they are small and more circular objects, due to the near-IR sensitivity to select more compact objects with higher surface brightness. The procedure will be used to identify extragalactic objects in other tiles of the VVV disk, which will allow us to study the distribution of galaxies and filaments hidden by the Milky Way. © 2018. The American Astronomical Society. All rights reserved.
dc.fuente.origenORCID
dc.identifier.doihttps://doi.org/10.3847/1538-3881/aa9ee2
dc.identifier.issn0004-6256
dc.identifier.urihttp://www.scopus.com/inward/record.url?eid=2-s2.0-85040069435&partnerID=MN8TOARS
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/84429
dc.information.autorucInstituto de Física; Beamin Muhlenbrock Juan Carlos; 0000-0002-8409-6534; 154617
dc.issue.numero1
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final14
dc.pagina.inicio1
dc.revistaAstronomical Journal
dc.rightsacceso abierto
dc.rights.licenseAtribución-SinDerivadas 4.0 Internacional (CC BY-ND 4.0)
dc.subjectCatalogs
dc.subjectGalaxies: Fundamental Parameters
dc.subjectGalaxies: Photometry
dc.subjectSurveys
dc.subject.ddc520
dc.subject.deweyAstronomía
dc.titleSearching for extragalactic sources in the VISTA variables in the VÍa láctea survey
dc.typeartículo
dc.volumen155
sipa.codpersvinculados154617
sipa.trazabilidadORCID;2024-03-11
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