J/A+A/648/A15ivo://CDS.VizieR/J/A+A/648/A15doi:10.26093/cds/vizier.36480015CDSKenworthy M.A.Mellon S.N.Bailey III J.I.Stuik R.Dorval P.,Talens G.-J.J.Crawford S.R.Mamajek E.E.Laginja I.Ireland M.,Lomberg B.Kuhn R.B.Snellen I.Zwintz K.Kuschnig R.Kennedy G.M.,Abe L.Agabi A.Mekarnia D.Guillot T.Schmider F.Stee P.de Pra Y.,Buttu M.Crouzet N.Kalas P.Wang J.J.Stevenson K.de Mooij E.,Lagrange A.-M.Lacour S.Lecavelier des Etangs A.M. Nowak M.,Strom P.A.Hui Z.Wang L.2021-09-16T09:12:31Z2021-04-07T10:36:25ZCDS support team

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

cds-question@unistra.fra-starsvariable-starsccd-photometryPhotometric monitoring of beta Pictoris in 1981 showed anomalous fluctuations of up to 4% over several days, consistent with foreground material transiting the stellar disk. The subsequent discovery of the gas giant planet beta Pictoris b and the predicted transit of its Hill sphere to within 0.1 au projected distance of the planet provided an opportunity to search for the transit of a circumplanetary disk in this 21+/-4Myr-old planetary system. Continuous broadband photometric monitoring of beta Pictoris requires ground- based observatories at multiple longitudes to provide redundancy and to provide triggers for rapid spectroscopic followup. These observatories include the dedicated beta Pictoris monitoring observatory bRing at Sutherland and Siding Springs, the ASTEP400 telescope at Concordia, and observations from the space observatories BRITE and Hubble Space Telescope. We search the combined light curves for evidence of short period transient events caused by rings and for longer term photometric variability due to diffuse circumplanetary material. We find no photometric event that matches with the event seen in November 1981, and there is no systematic photometric dimming of the star as a function of the Hill sphere radius. We conclude that the 1981 event was not caused by the transit of a circumplanetary disk around beta Pictoris b. The upper limit on the long term variability of beta Pictoris places an upper limit of 1.8x10^22^g of dust within the Hill sphere. Circumplanetary material is either condensed into a non-transiting disk, is condensed into a disk with moons that has a small obliquity, or is below our detection threshold. This is the first time that a dedicated international campaign has mapped the Hill sphere transit of a gas giant extrasolar planet at 10 au.2021A&A...648A..15Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/648/A15CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/299/557 : Light variations on beta Pic (Lecavelier des Etangs+, 1995)J/A+A/542/A18 : {beta}Pic Harps radial velocity data (Lagrange+, 2012)J/ApJ/823/108 : A dust model for bet Pic from 0.58 to 870um (Ballering+, 2016)J/A+A/607/A25 : beta Pic HARPS spectrum (Vidal-Madjar+, 2017)J/A+A/627/A28 : beta Pic BRITE, bRing, SMEI light curves (Zwintz+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/648/A15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/648/A15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/648/A15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/648/A15https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/648/A15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/648/A15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/648/A15/astep1Photometry from ASTEP 400recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeObservation date (MJD)dtime.epoch;obsdoubleFlux[-1/1] Normalised flux to 1phot.flux;arith.ratiodoublee_FluxError on fluxstat.error;phot.fluxdoubleJ/A+A/648/A15/brite1Photometry from BRITE-ConstellationTimeObservation date (MJD)dtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFlux[-1/1] Normalised flux to 1phot.flux;arith.ratiodoublee_FluxError on fluxstat.error;phot.fluxdoubleJ/A+A/648/A15/bring1Photometry from bRingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeObservation date (MJD)dtime.epochdoubleFlux[-1/1] Normalised flux to 1phot.flux;arith.ratiodoublee_FluxError on Fluxstat.error;phot.fluxfloatJ/A+A/648/A15/hst1Photometry from HSTVisit[1/7] Visit numbermeta.idintTimeObservation date (MJD)dtime.epochdoubleFluxFlux of starctphot.countdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintScandir[-1/1] Scan direction across detectorobs.paramint