Variability and transient search in the SUDARE–VOICE field: a new method to extract the light curves

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dc.contributor.authorLiu, D.
dc.contributor.authorDeng, W.
dc.contributor.authorFan, Z.
dc.contributor.authorFu, L.
dc.contributor.authorCovone, G.
dc.contributor.authorVaccari, M.
dc.contributor.authorRadovich, M.
dc.contributor.authorCapaccioli, M.
dc.contributor.authorDe Cicco, D.
dc.contributor.authorGrado, A.
dc.contributor.authorMarchetti, L.
dc.contributor.authorNapolitano, N.
dc.contributor.authorPaolillo, M.
dc.contributor.authorPignata, Giuliano
dc.contributor.authorRagost, F.
dc.date.accessioned2022-05-24T14:48:09Z
dc.date.available2022-05-24T14:48:09Z
dc.date.issued2020
dc.description.abstractThe VLT Survey Telescope (VST) Optical Imaging of the CDFS and ES1 Fields Survey, in synergy with the SUDARE survey, is a deep optical ugri imaging of the CDFS and ES1 fields using the VST. The observations for the CDFS field comprise about 4.38 deg2 down to r ∼ 26 mag. The total on-sky time spans over 4 yr in this field, distributed over four adjacent sub-fields. In this paper, we use the multiepoch r-band imaging data to measure the variability of the detected objects and search for transients. We perform careful astrometric and photometric calibrations and point spread function modelling. A new method, referring to as differential running-average photometry, is proposed to measure the light curves of the detected objects. With the method, the difference of PSFs between different epochs can be reduced, and the background fluctuations are also suppressed. Detailed uncertainty analysis and detrending corrections on the light curves are performed. We visually inspect the light curves to select variable objects, and present some objects with interesting light curves. Further investigation of these objects in combination with multiband data will be presented in our forthcoming paper.
dc.fuente.origenOUP
dc.identifier.doi10.1093/mnras/staa558
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/staa558
dc.identifier.urihttps://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9111325
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/64270
dc.issue.numero3
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final3837
dc.pagina.inicio3825
dc.revistaMonthly Notices of the Royal Astronomical Society
dc.rightsacceso restringido
dc.subjectMethods: data analysis
dc.subjectMethods: observational
dc.subjectTechniques: image processing
dc.subjectTechniques: photometric
dc.subjectCatalogues
dc.subjectSurveys
dc.titleVariability and transient search in the SUDARE–VOICE field: a new method to extract the light curveses_ES
dc.typeartículo
dc.volumen493
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