J/A+A/658/A104ivo://CDS.VizieR/J/A+A/658/A104doi:10.26093/cds/vizier.36580104CDSGarufi A.Podio L.Codella C.Segura-Cox D.Vander Donckt M.,Mercimek S.Bacciotti F.Fedele D.Kasper M.Pineda J.E.Humphreys E.,Testi L.2022-08-25T11:29:56Z2022-02-07T08:32:41ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsmolecular-physicsradio-astronomyPlanet-forming disks are not isolated systems. Their interaction with the surrounding medium affects their mass budget and chemical content. In the context of the ALMA-DOT program, we obtained high-resolution maps of assorted lines from six disks that are still partly embedded in their natal envelope. In this work, we examine the SO and SO_2_ emission that is detected from four sources: DG Tau, HL Tau, IRAS 04302+2247, and T Tau. The comparison with CO, HCO^+^, and CS maps reveals that the SO and SO_2_ emission originates at the intersection between extended streamers and the planet-forming disk. Two targets, DG Tau and HL Tau, offers clear cases of inflowing material inducing an accretion shock on the disk material. The measured rotational temperatures and radial velocities are consistent with this view. In contrast to younger Class 0 sources, these shocks are confined to the specific disk region impacted by the streamer. In HL Tau, the known accreting streamer induces a shock in the disk outskirt, and the released SO and SO_2_ molecules spiral toward the star in a few hundreds years. These results suggest that shocks induced by late accreting material may be common in the disks of young star-forming regions with possible consequences on the chemical composition and mass content of the disk. They also highlight the importance of SO and SO_2_ line observations to probe accretion shocks from a larger sample.2022A&A...658A.104Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/658/A104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/644/A120 : HL TAU and IRAS04302+2247 H2CS ALMA images (Codella+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/658/A104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/658/A104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/658/A104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/658/A104https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/658/A104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/658/A104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/658/A104/list (Informations on FITS datacube)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/658/A104/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/658/A104/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/658/A104/list?GETtext/xml+votable180.050000true67.9101518.232670.0055555555555555566/23549https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/658/A104?format=asciiRadiodefaultJ/A+A/658/A104/listInformations on FITS datacuberecnoRecord 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.numberintNzNumber of slicesmeta.numberintObs.dateObservation datestime.epoch;obsnullablebFrepLower value of frequency intervalGHzem.freq;stat.minfloatBFrepUpper value of frequency intervalGHzem.freq;stat.maxfloatdFrepFrequency resolutionHzspect.resolutionintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar