J/A+A/523/A84ivo://CDS.VizieR/J/A+A/523/A84doi:10.26093/cds/vizier.35230084CDSSzabo G.M.Kiss L.L.Benko J.M.Mezo G.Nuspl J.Regaly Z.,Sarneczky K.Simon A.E.Leto G.Zanmar Sanchez R.Ngeow C.-C.,Kovari Z.Szabo R.2017-06-21T08:21:39Z2010-11-19T09:20:45ZCDS support team

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

cds-question@unistra.frvariable-starssolar-system-planetsccd-photometryA possible transit of HAT-P-13c has been predicted to occur on 2010 April 28. Here we report on the results of a multi-site campaign that has been organised to detect the event. CCD photometric observations have been carried out at five observatories in five countries. We reached 30% time coverage in a 5 days interval centered on the suspected transit of HAT-P-13c. Two transits of HAT-P-13b were also observed. No transit of HAT-P-13c has been detected while the campaign was on. By a numerical experiment with 10^5^ model systems we conclude that HAT-P-13c is not a transiting exoplanet with a significance level from 65% to 72%, depending on the planet parameters and the prior assumptions. We present two times of transit of HAT-P-13b ocurring at BJD 2455141.5522+/-0.0010 and BJD 2455249.4508+/-0.0020. The TTV of HAT-P-13b is consistent with zero within 0.001 days. The refined orbital period of HAT-P-13b is 2.916293+/-0.000010 days.2010A&A...523A..84Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/523/A84CatalogResearchIsServedByTAP VizieR generic servicerelated-toVIII/7 : Hat Creek High-Latitude H I Survey (Heiles+ 1974-76)J/AJ/134/1707 : Six transits of exoplanet HAT-P-1b (Winn+, 2007)J/ApJ/663/573 : Sloan gi light curves of HAT-TR-205-012 (Beatty+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/523/A84https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/523/A84http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/523/A84https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/523/A84https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/523/A84http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/523/A84GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/523/A84/photomTransit RV light curves at JD2455141 and JD 2455249Band[RV] Bandinstr.bandpasscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date referring to the photometry pointdtime.epochdoubleFluxRelative flux in Band (in the unit of out-of-transit flux)phot.flux;arith.ratiofloat