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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 13563naa a2201261 4500 | |
| 001 | oai:research.chalmers.se:99f92673-162f-409f-9fab-3678c4baf21d | |
| 003 | SwePub | |
| 008 | 210120s2021 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://research.chalmers.se/publication/5219942 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2020380002 DOI |
| 040 | a (SwePub)cth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Koutoulaki, M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),European Southern Observatory (ESO),University College Dublin, National University Of Ireland,Dublin Institute for Advanced Studies4 aut |
| 245 | 1 0 | a The GRAVITY young stellar object survey: IV. The CO overtone emission in 51 Oph at sub-au scales |
| 264 | c 2021-01-07 | |
| 264 | 1 | b EDP Sciences,c 2021 |
| 338 | a electronic2 rdacarrier | |
| 520 | a Context. 51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 μm, most likely originating in the innermost regions of a circumstellar disc. Aims. We aim to obtain the physical and geometrical properties of the system by spatially resolving the circumstellar environment of the inner gaseous disc. Methods. We used the second-generation Very Large Telescope Interferometer instrument GRAVITY to spatially resolve the continuum and the CO overtone emission. We obtained data over 12 baselines with the auxiliary telescopes and derive visibilities, and the differential and closure phases as a function of wavelength. We used a simple local thermal equilibrium ring model of the CO emission to reproduce the spectrum and CO line displacements. Results. Our interferometric data show that the star is marginally resolved at our spatial resolution, with a radius of ∼10.58 ± 2.65R·. The K-band continuum emission from the disc is inclined by 63° ± 1°, with a position angle of 116° ± 1°, and 4 ± 0.8 mas (0.5 ± 0.1 au) across. The visibilities increase within the CO line emission, indicating that the CO is emitted within the dust-sublimation radius. By modelling the CO bandhead spectrum, we derive that the CO is emitted from a hot (T = 1900-2800 K) and dense (NCO = (0.9-9) × 1021 cm-2) gas. The analysis of the CO line displacement with respect to the continuum allows us to infer that the CO is emitted from a region 0.10 ± 0.02 au across, well within the dust-sublimation radius. The inclination and position angle of the CO line emitting region is consistent with that of the dusty disc. Conclusions. Our spatially resolved interferometric observations confirm the CO ro-vibrational emission within the dust-free region of the inner disc. Conventional disc models exclude the presence of CO in the dust-depleted regions of Herbig AeBe stars. Ad hoc models of the innermost disc regions, that can compute the properties of the dust-free inner disc, are therefore required. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geofysik0 (SwePub)105052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geophysics0 (SwePub)105052 hsv//eng |
| 653 | a Accretion, accretion disks | |
| 653 | a Stars: pre-main sequence | |
| 653 | a Stars: individual: 51 Oph | |
| 653 | a Stars: formation | |
| 653 | a Techniques: interferometric | |
| 700 | 1 | a Garcia-Lopez, R.u University College Dublin, National University Of Ireland,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Dublin Institute for Advanced Studies4 aut |
| 700 | 1 | a Natta, A.u Dublin Institute for Advanced Studies4 aut |
| 700 | 1 | a Fedriani, Rubén,d 1991u University College Dublin, National University Of Ireland,Dublin Institute for Advanced Studies,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)fedriani |
| 700 | 1 | a Garatti, A. Caratti o.u Dublin Institute for Advanced Studies,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),University College Dublin, National University Of Ireland4 aut |
| 700 | 1 | a Ray, T. P.u Dublin Institute for Advanced Studies4 aut |
| 700 | 1 | a Coffey, Deirdreu Dublin Institute for Advanced Studies,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Brandner, W.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Dougados, C.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Garcia, P. J.V.u Instituto Superior Tecnico,Universidade do Porto,University of Porto,European Southern Observatory Santiago4 aut |
| 700 | 1 | a Klarmann, L.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Labadie, L.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Perraut, K.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Sanchez-Bermudez, J.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico4 aut |
| 700 | 1 | a Lin, C. C.u University of Hawaii,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Amorim, A.u Instituto Superior Tecnico,Universidade de Lisboa,University of Lisbon4 aut |
| 700 | 1 | a Bauböck, M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Benisty, M.u Universidad de Chile (UCH),University of Chile (UCH),Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Berger, J. P.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Buron, A.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Caselli, P.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Clénet, Y.u PSL University Paris4 aut |
| 700 | 1 | a Coudé Du Foresto, V.u PSL University Paris4 aut |
| 700 | 1 | a De Zeeuw, P. T.u Universiteit Leiden (UL),Leiden University (UL),Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Duvert, G.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a De Wit, W. J.u European Southern Observatory Santiago4 aut |
| 700 | 1 | a Eckart, A.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Eisenhauer, F.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Filho, M.u Instituto Superior Tecnico,Universidade do Porto,University of Porto,European Southern Observatory Santiago4 aut |
| 700 | 1 | a Gao, F.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Gendron, E.u PSL University Paris4 aut |
| 700 | 1 | a Genzel, R.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),University of California4 aut |
| 700 | 1 | a Gillessen, S.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Grellmann, R.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Habibi, M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Haubois, X.u European Southern Observatory Santiago4 aut |
| 700 | 1 | a Haussmann, F.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Henning, T.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Hippler, S.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Hubert, Z.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Horrobin, M.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Jimenez-Rosales, Alejandrau Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Jocou, L.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Kervella, P.u PSL University Paris4 aut |
| 700 | 1 | a Kolb, J.u European Southern Observatory Santiago4 aut |
| 700 | 1 | a Lacour, S.u PSL University Paris4 aut |
| 700 | 1 | a Le Bouquin, J. B.u Université Grenoble Alpes,Grenoble Alpes University4 aut |
| 700 | 1 | a Léna, P.u PSL University Paris4 aut |
| 700 | 1 | a Linz, H.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Ott, T.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Paumard, T.u PSL University Paris4 aut |
| 700 | 1 | a Perrin, G.u PSL University Paris4 aut |
| 700 | 1 | a Pfuhl, O.u European Southern Observatory (ESO)4 aut |
| 700 | 1 | a Ramírez-Tannus, M. C.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Rau, C.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Rousset, G.u PSL University Paris4 aut |
| 700 | 1 | a Scheithauer, S.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Shangguan, J.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Stadler, J.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Straub, O.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Straubmeier, C.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Sturm, E.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Van Dishoeck, E.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universiteit Leiden (UL),Leiden University (UL)4 aut |
| 700 | 1 | a Vincent, F.u PSL University Paris4 aut |
| 700 | 1 | a von Fellenberg, S.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Widmann, F.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Wieprecht, E.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Wiest, M.u Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Wiezorrek, E.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Yazici, S.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universität zu Köln,University of Cologne4 aut |
| 700 | 1 | a Zins, G.u European Southern Observatory Santiago4 aut |
| 710 | 2 | a Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG)b European Southern Observatory (ESO)4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 645q 645x 0004-6361x 1432-0746 |
| 856 | 4 | u https://research.chalmers.se/publication/521994/file/521994_Fulltext.pdfx primaryx freey FULLTEXT |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2021/01/aa38000-20.pdf |
| 856 | 4 8 | u https://research.chalmers.se/publication/521994 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/202038000 |
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