J/A+A/707/A348ivo://CDS.VizieR/J/A+A/707/A348CDSRiviere-Marichalar P.Fuente A.le Gal R.Neri R.Esplugues G.,Semenov D.Teague R.Santamaria-Miranda A.2026-04-02T06:28:33Z2026-03-17T08:05:00ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsradio-astronomychemical-abundancesProtoplanetary disks are the birthplace of planets. As such, they set the initial chemical abundances available for planetary atmosphere formation. Thus, studying elemental abundances, molecular compositions, and abundance ratios in protoplanetary disks is key to linking planetary atmospheres to their formation sites. We aim to derive the sulfur abundance and the C/O ratio in the AB Aur disk using interferometric observations of CS and SO. New NOEMA observations of CS 3-2 towards AB Aur are presented. We used velocity-integrated intensity maps to determine the inclination and position angles. Keplerian masks were constructed for all observed species to assess the presence of non-Keplerian motions. We use the CS/SO ratio to study the C/O ratio. We compare our present and previous interferometric observations of AB Aur with a NAUTILUS disk model to gain insight into the S elemental abundance and C/O ratio. We derive an observational CS/SO ratio ranging from 1.8 to 2.6. Only NAUTILUS models with C/O&1 can reproduce such ratios. The comparison with models points to strong sulfur depletion, with [S/H]=8e-8, but we note that no single model can simultaneously fit all observed species.2026A&A...707A.348Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A348CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/589/A60 : CO, SO and H_2_CO images of AB Aur (Pacheco-Vazquez+, 2016)J/ApJS/248/19 : High-resolution spectroscopy of TESS starsJ/A+A/649/A126 : Abundances of neutron-capture elements (Tautvaisiene+, 2021)J/ApJS/259/45 : Abundances of northern bright TESS stars (Tautvaisiene+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A348https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A348http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A348https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A348https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A348http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A348GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/707/A348/list (Information on fits datacube)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A348/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A348/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A348/list?GETtext/xml+votable180.050000true73.9411330.550980.0055555555555555566/1114https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/707/A348?format=asciiRadiodefaultJ/A+A/707/A348/listInformation 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.numberintbVRADLower value of bVRAD intervalm/sphys.veloc;pos.heliocentricdoubleBVRADUpper value of bVRAD intervalm/sphys.veloc;pos.heliocentricfloatdVRADbVRAD resolutionm/sspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar