J/A+A/595/A31ivo://CDS.VizieR/J/A+A/595/A31doi:10.26093/cds/vizier.35950031CDSGauchet L.Lacour S.Lagrange A.-M.Ehrenreich D.Bonnefoy M.,Girard J. H.Boccaletti A.2016-10-25T08:25:50Z2016-10-25T09:24:32ZCDS support team

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

cds-question@unistra.frearly-type-starsinterferometryThe formation of planetary systems is a common, yet complex mechanism. Numerous stars have been identified to possess a debris disk, a proto-planetary disk or a planetary system. The understanding of such formation process requires the study of debris disks. These targets are substantial and particularly suitable for optical and infrared observations. Sparse aperture masking (SAM) is a high angular resolution technique strongly contributing to probing the region from 30 to 200 mas around the stars. This area is usually unreachable with classical imaging, and the technique also remains highly competitive compared to vortex coronagraphy. We aim to study debris disks with aperture masking to probe the close environment of the stars. Our goal is either to find low-mass companions, or to set detection limits. We observed eight stars presenting debris disks ({beta} Pictoris, AU Microscopii, 49 Ceti, {eta} Telescopii, Fomalhaut, g Lupi, HD 181327, and HR 8799) with SAM technique on the NaCo instrument at the Very Large Telescope (VLT). No close companions were detected using closure phase information under 0.5" of separation from the parent stars. We obtained magnitude detection limits that we converted to Jupiter masses detection limits using theoretical isochrones from evolutionary models. We derived upper mass limits on the presence of companions in the area of a few times the telescope's diffraction limits around each target star.2016A&A...595A..31Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/595/A31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/595/A31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/595/A31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/595/A31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/595/A31https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/595/A31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/595/A31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/595/A31/list (List of FITS images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/595/A31/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/595/A31/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/595/A31/list?GETtext/xml+votable180.050000true23.65741-15.676360.0055555555555555566/17421 34054 42555 46939 47205 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/595/A31?format=asciidefaultJ/A+A/595/A31/listList of FITS imagesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.DateObservation datetime.epoch;obsnullableSizeSize of the FITS filebytephys.size;meta.fitsintFilenameName of the FITS file in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the filemeta.title;meta.file