J/A+A/624/A87ivo://CDS.VizieR/J/A+A/624/A87doi:10.26093/cds/vizier.36240087CDSBohn A.J.Kenworthy M.A.Ginski C.Benisty M.de Boer J.,Keller C.U.Mamajek E.E.Meshkat T.Muro-Arena G.A.Pecaut M.J.,Snik F.Wolff S.G.Reggiani M.2019-08-01T13:48:38Z2019-04-23T08:43:19ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsk-starssolar-system-planetshertzsprung-russell-diagramProtoplanetary disks are the birth environments of planetary systems. Therefore, the study of young, circumstellar environments is essential to understanding the processes taking place in planet formation and the evolution of planetary systems. We detect and characterize circumstellar disks and potential companions around solar-type, pre-main sequence stars in the Scorpius-Centaurus association (Sco-Cen). As part of our ongoing survey we carried out high-contrast imaging with VLT/SPHERE/IRDIS to obtain polarized and total intensity images of the young (11^+16^_-7_)Myr old) K3IV star Wray 15-788 within the Lower Centaurus Crux subgroup of Sco-Cen. For the total intensity images, we remove the stellar halo via an approach based on reference star differential imaging in combination with principal component analysis. Both total intensity and polarimetric data resolve a disk around the young, solar-like Sco-Cen member Wray 15-788. Modeling of the stellar spectral energy distribution suggests that this is protoplanetary disk at a transition stage. We detect a bright outer ring at a projected separation of ~370mas (~56au), hints of inner substructures at ~170mas (~28au), and a gap in between. Within a position angle range of only 60{deg}<{phi}<240{deg}, we are confident at the 5{sigma} level that we detect actual scattered light flux from the outer ring of the disk; the remaining part is indistinguishable from background noise. For the detected part of the outer ring we determine a disk inclination of i=21{deg}+/-6{deg} and a position angle of {varphi}=76{deg}+/-16{deg}. Furthermore, we find that Wray 15-788 is part of a binary system with the A2V star HD 98363 at a separation of ~50arcsec (~6900,au). The detection of only half of the outer ring might be due to shadowing by a misaligned inner disk. A potential substellar companion can cause the misalignment of the inner structures and can be responsible for clearing the detected gap from scattering material.However, we cannot rule out the possibility of a non-detection due to our limited signal-to-noise ratio, combined with brightness azimuthal asymmetry. From our data we can exclude companions more massive than 10M_{jup}_ within the gap at a separation of ~230mas (~35au). Additional data are required to characterize the disk's peculiar morphology and to set tighter constraints on the potential perturber's orbital parameters and mass.2019A&A...624A..87Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/624/A87CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/624/A87https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/624/A87http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/624/A87https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/624/A87https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/624/A87http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/624/A87GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/624/A87/table1 (Stellar parameters of Wray 15-788 and HD 98363)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/624/A87/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/624/A87/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/624/A87/table1?GETtext/xml+votable180.050000true169.46584147976802-64.034885967883010.005555555555555556Cone search capability for table J/A+A/624/A87/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/624/A87/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/624/A87/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/624/A87/list?GETtext/xml+votable180.050000true169.46584-64.034870.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/624/A876/372377.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/624/A87?format=asciidefaultJ/A+A/624/A87/table1Stellar parameters of Wray 15-788 and HD 98363AgeAgeyrtime.ageintHmagH magnitudemagphot.mag;em.IR.HfloatKmagK magnitudemagphot.mag;em.IR.KfloatB-VB-V color indexmagphot.color;em.opt.B;em.opt.VfloatJmagJ magnitudemagphot.mag;em.IR.JfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget namemeta.id;meta.maincharRAJ2000Right Ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainSpTypeSpectral typesrc.spTypecharMassMasssolMassphys.massfloatTeffEffective temperatureKphys.temperature.effectiveintLumLuminositysolLumphys.luminosityfloatB_AgeUpper uncertainty on Ageyrstat.error;time.age;stat.maxintb_AgeLower uncertainty on Ageyrstat.error;time.age;stat.minintplxParallaxmaspos.parallax.trigdoubleDistDistancepcpos.parallax.trigfloatpmRAProper motion along Right Ascensionmaspos.pm;pos.eq.radoublepmDEProper motion along Declinationmaspos.pm;pos.eq.decdoubleVmagV magnitudemagphot.mag;em.opt.VfloatW1magWise 1 magnitudemagphot.mag;em.IR.3-4umfloatW2magWise 2 magnitudemagphot.mag;em.IR.4-8umfloatW3magWise 3 magnitudemagphot.flux.density;em.IR.8-15umfloatW4magWise 4 magnitudemagphot.flux.density;em.IR.15-30umfloatJ/A+A/624/A87/fig_9Detection limits of our data reductionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSepProjected separationarcsecpos.angDistance;src.orbitalfloatDeltaHMagnitude contrast H bandmagphot.mag;arith.difffloatDeltaKsMagnitude contrast Ks bandmagphot.mag;arith.difffloatJ/A+A/624/A87/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.numberintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitscharAssocDataAssociated Data web pagemeta.ref.urlchar