J/MNRAS/461/1576ivo://CDS.VizieR/J/MNRAS/461/1576doi:10.26093/cds/vizier.74611576CDSEchevarria J.Ramirez-Torres A.Michel R.Hernandez Santisteban J.V.2024-08-16T20:17:42Z2016-07-19T14:16:57ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starseclipsing-binary-starsA study on the intermediate polar EX Hya is presented, based on simultaneous photometry and high-dispersion spectroscopic observations, during four consecutive nights. The strong photometric modulation related to the 67-min spin period of the primary star is clearly present, as well as the narrow eclipses associated with the orbital modulation. Since our eclipse timings have been obtained almost 91000 cycles since the last reported observations, we present new linear ephemeris, although we cannot rule out a sinusoidal variation suggested by previous authors.2016MNRAS.461.1576Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/461/1576CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/461/1576https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/461/1576http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/461/1576https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/461/1576https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/461/1576http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/461/1576GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/MNRAS/461/1576/table1Mid-eclipse timings of EX HydraeSourceOriginal source of data (1)meta.bibintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochEpoch since first observationtime.epoch;obsintHJDHeliocentric Julian Date of mid eclipsedtime.epochdouble