J/A+A/673/A39ivo://CDS.VizieR/J/A+A/673/A39doi:10.26093/cds/vizier.36730039CDSPerrot C.Olofsson J.Kral Q.Thebault P.Montesinos M.Kennedy G.,Bayo A.Iglesias D.van Holstein R.Pinte C.2024-11-06T20:04:01Z2023-05-02T16:06:22ZCDS support team

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

cds-question@unistra.frearly-type-starsinfrared-photometrypolarimetryDebris disks are the signposts of collisionally eroding planetesimal circumstellar belts, whose study can put important constraints on the structure of extrasolar planetary systems. The best constraints on the morphology of disks are often obtained from spatially resolved observations in scattered light. Here, we investigate the young (~16Myr) bright gas-rich debris disk around HD 121617. We use new scattered-light observations with VLT/SPHERE to characterize the morphology and the dust properties of this disk. From these properties we can then derive constraints on the physical and dynamical environment of this system, for which significant amounts of gas have been detected. The disk morphology is constrained by linear-polarimetric observations in the J band. Based on our modeling results and archival photometry, we also model the SED to put constraints on the total dust mass and the dust size distribution. We explore different scenarios that could explain these new constraints. We present the first resolved image in scattered light of the debris disk HD 121617. We fit the morphology of the disk, finding a semi-major axis of 78.3+/-0.2au, an inclination of 43.1+/-0.2{deg} and a position angle of the major axis with respect to north, of 239.8+/-0.3{deg}, compatible with the previous continuum and CO detection with ALMA. Our analysis shows that the disk has a very sharp inner edge, possibly sculpted by a yet-undetected planet or gas drag. While less sharp, its outer edge is steeper than expected for unperturbed disks, which could also be due to a planet or gas drag, but future observations probing the system farther from the main belt would help explore this further. The SED analysis leads to a dust mass of 0.21+/-0.02M_{Earth}_ and a minimum grain size of 0.87+/-0.12um, smaller than the blowout size by radiation pressure, which is not unexpected for very bright collisionally active disks.2023A&A...673A..39Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/673/A39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/673/A39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/673/A39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/673/A39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/673/A39https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/673/A39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/673/A39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/673/A39/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/673/A39/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/673/A39/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/673/A39/list?GETtext/xml+votable180.050000true209.42117-47.009610.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/673/A396/43308https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/673/A39?format=asciiInfrareddefaultJ/A+A/673/A39/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.mainscaleScale of the imagearcsec/pixinstr.scaledoubleNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablelambdaWavelength for observed banduminstr.bandpassfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar