dc.contributor.author | Garcia Lopez, R | |
dc.contributor.author | Perraut, K | |
dc.contributor.author | Caratti o Garatti, A | |
dc.contributor.author | Lazareff, B | |
dc.contributor.author | Sanchez-Bermudez, J | |
dc.contributor.author | Benisty, M | |
dc.contributor.author | Dougados, C | |
dc.contributor.author | Labadie, L | |
dc.contributor.author | Brandner, W | |
dc.contributor.author | Garcia, PJV | |
dc.contributor.author | Henning, Th | |
dc.contributor.author | Ray, TP | |
dc.contributor.author | Abuter, R | |
dc.contributor.author | Amorim, A | |
dc.contributor.author | Anugu, N | |
dc.contributor.author | Berger, JP | |
dc.contributor.author | Bonnet, H | |
dc.contributor.author | Buron, A | |
dc.contributor.author | Caselli, P | |
dc.contributor.author | Clénet, Y | |
dc.contributor.author | Coudé du Foresto, V | |
dc.contributor.author | de Wit, W | |
dc.contributor.author | Deen, C | |
dc.contributor.author | Delplancke-Ströbele, F | |
dc.contributor.author | Dexter, J | |
dc.contributor.author | Eckart, A | |
dc.contributor.author | Eisenhauer, F | |
dc.contributor.author | Garcia Dabo, CE | |
dc.contributor.author | Gendron, E | |
dc.contributor.author | Genzel, R | |
dc.contributor.author | Gillessen, S | |
dc.contributor.author | Haubois, X | |
dc.contributor.author | Haug, M | |
dc.contributor.author | Haussmann, F | |
dc.contributor.author | Hippler, S | |
dc.contributor.author | Hubert, Z | |
dc.contributor.author | Hummel, CA | |
dc.contributor.author | Horrobin, M | |
dc.contributor.author | Jocou, L | |
dc.contributor.author | Kellner, S | |
dc.contributor.author | Kervella, P | |
dc.contributor.author | Kulas, M | |
dc.contributor.author | Kolb, J | |
dc.contributor.author | Lacour, S | |
dc.contributor.author | Le Bouquin, J-B | |
dc.contributor.author | Léna, P | |
dc.contributor.author | Lippa, M | |
dc.contributor.author | Mérand, A | |
dc.contributor.author | Müller, E | |
dc.contributor.author | Ott, T | |
dc.contributor.author | Panduro, J | |
dc.contributor.author | Paumard, T | |
dc.contributor.author | Perrin, G | |
dc.contributor.author | Pfuhl, O | |
dc.contributor.author | Ramirez, A | |
dc.contributor.author | Rau, C | |
dc.contributor.author | Rohloff, RR | |
dc.contributor.author | Rousset, G | |
dc.contributor.author | Scheithauer, S | |
dc.contributor.author | Schöller, M | |
dc.contributor.author | Straubmeier, C | |
dc.contributor.author | Sturm, E | |
dc.contributor.author | Thi, WF | |
dc.contributor.author | van Dishoeck, E | |
dc.contributor.author | Vincent, F | |
dc.contributor.author | Waisberg, I | |
dc.contributor.author | Wank, I | |
dc.contributor.author | Wieprecht, E | |
dc.contributor.author | Wiest, M | |
dc.contributor.author | Wiezorrek, E | |
dc.contributor.author | Woillez, J | |
dc.contributor.author | Yazici, S | |
dc.contributor.author | Zins, G | |
dc.date.accessioned | 2019-01-23T10:33:12Z | |
dc.date.issued | 2017-12-08 | |
dc.description.abstract | Aims. To investigate the inner regions of protoplanetary discs, we performed near-infrared interferometric observations of the classical T Tauri binary system S CrA. Methods. We present the first VLTI-GRAVITY high spectral resolution (R - 4000) observations of a classical T Tauri binary, S CrA (composed of S CrAN and S CrAS and separated by -10:04), combining the four 8m telescopes in dual-field mode. Results. Our observations in the near-infrared K-band continuum reveal a disc around each binary component, with similar halfflux radii of about 0.1 au at d - 130 pc, inclinations (i = 28 - 3-and i = 22 - 6-), and position angles (PA = 0- 6- and PA = -2-12-), suggesting that they formed from the fragmentation of a common disc. The S CrAN spectrum shows bright He i and Br line emission exhibiting inverse P Cygni profiles, typically associated with infalling gas. The continuum-compensated Br line visibilities of S CrAN show the presence of a compact Br emitting region whose radius is about -0.06 au, which is twice as big as the truncation radius. This component is mostly tracing a wind. Moreover, a slight radius change between the blue-And red-shifted Br line components is marginally detected. Conclusions. The presence of an inverse P Cygni profile in the He i and Br lines, along with the tentative detection of a slightly larger size of the blue-shifted Br line component, hint at the simultaneous presence of a wind and magnetospheric accretion in S CrA N. | en_GB |
dc.description.sponsorship | Science Foundation Ireland | en_GB |
dc.description.sponsorship | Alexander von Humboldt Foundation Fellowship Programme | en_GB |
dc.description.sponsorship | French PNPS | en_GB |
dc.description.sponsorship | LabEx OSUG@2020 | en_GB |
dc.identifier.citation | Vol. 608, article A78 | en_GB |
dc.identifier.doi | 10.1051/0004-6361/201731058 | |
dc.identifier.grantnumber | 13/ERC/I2907 | en_GB |
dc.identifier.grantnumber | ESP 1188300 HFST-P | en_GB |
dc.identifier.grantnumber | ANR10LABX56 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/35567 | |
dc.language.iso | en | en_GB |
dc.publisher | EDP Sciences | en_GB |
dc.rights | © ESO 2017 | en_GB |
dc.subject | stars: formation | en_GB |
dc.subject | circumstellar matter | en_GB |
dc.subject | ISM: jets and outflows | en_GB |
dc.subject | ISM: individual objects: S CrA | en_GB |
dc.subject | infrared: ISM | en_GB |
dc.subject | techniques: interferometric | en_GB |
dc.title | The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-Au resolution | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-01-23T10:33:12Z | |
dc.identifier.issn | 0004-6361 | |
dc.description | This is the author accepted manuscript. The final version is available from EDP Sciences via the DOI in this record. | en_GB |
dc.identifier.journal | Astronomy and Astrophysics | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2017-09-05 | |
rioxxterms.funder | European Research Council | en_GB |
rioxxterms.identifier.project | Horizon 2020 Marie Skłodowska-Curie Grant Agreement No. 706320 | en_GB |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2017-09-05 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-01-23T10:20:14Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2019-01-23T10:33:20Z | |
refterms.panel | B | en_GB |
rioxxterms.funder.project | f5ebf776-68ba-48ee-ac13-1cd1c9a05fa3 | en_GB |