J/other/NewA/15.ivo://CDS.VizieR/J/other/NewA/15.108CDSFernandez-Lajus E.Farina C.Calderon J.P.Salerno N.Torres A.F.,Schwartz M.A.von Essen C.Giudici F.Bareilles F.A.2017-06-12T08:25:23Z2009-10-20T10:40:21ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frvariable-starsccd-photometryinfrared-photometryvisible-astronomyWide-band photometryh-alpha-photometryThe periodic events occurring in {eta} Carinae have been widely monitored during the last three 5.5-year cycles. The last one recently occurred in January 2009 and more exhaustive observations have been made at different wavelength ranges. If these events are produced when the binary components approach periastron, the timing and sampling of the photometric features can provide more information about the geometry and physics of the system. Thus, we continued with our ground-based optical photometric campaign started in 2003 to record the behaviour of the 2009.0 event in detail. This time the observation program included a new telescope to obtain information from other photometric bands. The daily monitoring consists of the acquisition of CCD images through standard UBVRI filters and a narrow H{alpha} passband. The subsequent differential photometry includes the central region of the object and the whole Homunculus nebula. The results of our relative UBVRIH{alpha} photometry, performed from November 2008 up to the end of March 2009, are presented in this work, which comprises the totality of the event. The initial rising branch, the maximum, the dip to the minimum and the recovering rising phase strongly resemble a kind of eclipse. All these features happened on time - according to that predicted - although there are some photometric differences in comparison with the previous event. We made a new determination of 2022.8 days for the period value using the present and previous "eclipse-like" event data. These results strongly support the binarity hypothesis for {eta} Car. In this paper, the complete dataset with the photometry of the 2009.0 event is provided to make it readily available for further analysis.2010NewA...15..108Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NewA/15.108CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/304/415 : uvby-Hbeta photometry of Eta Car 1992-94 (van Genderen+, 1995)J/A+A/343/847 : Geneva Photometry of Eta Car (van Genderen+ 1999)J/A+A/419/215 : Emission lines of eta Car (Hartman+, 2004)J/A+A/493/1093 : BVRI light curves of eta Car (Fernandez-Lajus+, 2009)J/AJ/129/2018 : RXTE scaled fluxes of eta Car (Corcoran+, 2005)J/ApJS/71/983 : UV spectrum of eta Car (Viotti+ 1989)J/ApJS/157/138 : UV spectrum of eta Car (Nielsen+, 2005)J/ApJS/163/173 : UV spectrum of eta Car in 2003.5 (Gull+, 2006)J/ApJS/168/289 : NUV spectrum of eta Car in 2003.5 (Nielsen+, 2007)J/A+A/493/1093 : BVRI light curves of eta Car (Fernandez-Lajus+, 2009)J/ApJS/181/473 : Eta Carinae: visible and near-IR analysis (Nielsen+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NewA/15.108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NewA/15.108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NewA/15.108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NewA/15.108https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NewA/15.108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NewA/15.108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/other/NewA/15.108/tableUBVRIH{alpha} light curves of {eta} CarrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian datedtime.epochdoubleBand[UBVRI Ha] Photometric bandinstr.bandpasscharDmag{eta} Car mean differential magnitudemagphot.mag;arith.difffloate_Dmag{eta} Car rms error of the mean magnitudemagstat.error;phot.mag;arith.difffloatDmagT1? CPD-59 2627 (Test1) mean differential magnitudemagphot.mag;arith.difffloatnullablee_DmagT1? CPD-59 2627 rms error of the mean magnitudemagstat.errorfloatnullableDmagT2? CPD-59 2628 (Test2) mean differential magnitudemagphot.mag;arith.difffloatnullablee_DmagT2? CPD-59 2628 rms error of the mean magnitudemagstat.errorfloatnullableFWHMFull width half maximum of HDE303308arcsecspect.line.widthfloatNimagesNumber of images considered for the mean valuesmeta.numberintTel/ObsTelescope and Observatory Ids (1)meta.id;instr.obstychar