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The GRAVITY young s...
The GRAVITY young stellar object survey XII. The hot gas disk component in Herbig Ae/Be stars
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- Garcia-Lopez, R. (author)
- 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 Ireland
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- Natta, A. (author)
- Dublin Institute for Advanced Studies
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- Fedriani, Rubén, 1991 (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA),Chalmers tekniska högskola,Chalmers University of Technology
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- Garatti, A. Caratti o. (author)
- Osservatorio Astronomico di Capodimonte,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Sanchez-Bermudez, J. (author)
- Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Perraut, K. (author)
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Dougados, C. (author)
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- Bouarour, Y. I. (author)
- University College Dublin, National University Of Ireland
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Bouvier, J. (author)
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- Brandner, W. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Garcia, P. (author)
- Instituto Superior Tecnico,Universidade do Porto,University of Porto
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- Koutoulaki, M. (author)
- University of Leeds
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- Labadie, L. (author)
- Universität zu Köln,University of Cologne
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- Linz, H. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Alécian, E. (author)
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Benisty, M. (author)
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Berger, J. P. (author)
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- Bourdarot, G. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Caselli, P. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Clénet, Y. (author)
- Observatoire de Paris,Paris Observatory
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- De Zeeuw, P. T. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Davies, R. I. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Eckart, A. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universität zu Köln,University of Cologne
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- Eisenhauer, F. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Förster-Schreiber, N. M. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Gendron, E. (author)
- Observatoire de Paris,Paris Observatory
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- Gillessen, S. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Grant, Sierra L. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Henning, T. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Kervella, P. (author)
- Observatoire de Paris,Paris Observatory
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- Lacour, S. (author)
- Observatoire de Paris,Paris Observatory
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- Lapeyrère, V. (author)
- Observatoire de Paris,Paris Observatory
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Le Bouquin, J. B. (author)
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- Lutz, D. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Mang, F. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Nowacki, H. (author)
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- Ott, T. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Paumard, T. (author)
- Observatoire de Paris,Paris Observatory
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- Perrin, G. (author)
- Observatoire de Paris,Paris Observatory
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- Shangguan, J. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Shimizu, T. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Soulain, A. (author)
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- Straubmeier, C. (author)
- Universität zu Köln,University of Cologne
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- Sturm, E. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Tacconi, L. J. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- van Dishoeck, E. F. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Vincent, F. (author)
- Observatoire de Paris,Paris Observatory
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- Widmann, F. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Max Planck Gesellschaft zur Förderung der Wissenschaften eV. (MPG) University College Dublin, National University Of Ireland (creator_code:org_t)
- 2024
- 2024
- English.
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In: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 684
- Related links:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- Context. The region of protoplanetary disks closest to a star (within 1–2 au) is shaped by a number of different processes, from accretion of the disk material onto the central star to ejection in the form of winds and jets. Optical and near-IR emission lines are potentially good tracers of inner disk processes if very high spatial and/or spectral resolution are achieved. Aims. In this paper, we exploit the capabilities of the VLTI-GRAVITY near-IR interferometer to determine the location and kinematics of the hydrogen emission line Brγ. Methods. We present VLTI-GRAVITY observations of the Brγ line for a sample of 26 stars of intermediate mass (HAEBE), the largest sample so far analysed with near-IR interferometry. Results. The Brγ line was detected in 17 objects. The emission is very compact (in most cases only marginally resolved), with a size of 10–30 R∗(1–5 mas). About half of the total flux comes from even smaller regions, which are unresolved in our data. For eight objects, it was possible to determine the position angle (PA) of the line-emitting region, which is generally in agreement with that of the inner-dusty disk emitting the K-band continuum. The position-velocity pattern of the Brγ line-emitting region of the sampled objects is roughly consistent with Keplerian rotation. The exception is HD 45677, which shows more extended emission and more complex kinematics. The most likely scenario for the Brγ origin is that the emission comes from an MHD wind launched very close to the central star, in a region well within the dust sublimation radius. An origin in the bound gas layer at the disk surface cannot be ruled out, while accreting matter provides only a minor fraction of the total flux. Conclusions. These results show the potential of near-IR spectro-interferometry to study line emission in young stellar objects.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- circumstellar matter
- stars: formation
- techniques: interferometric
- stars: variables: T Tauri, Herbig Ae/Be
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Garcia-Lopez, R.
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Natta, A.
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Fedriani, Rubén, ...
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Garatti, A. Cara ...
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Sanchez-Bermudez ...
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Perraut, K.
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show more...
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Dougados, C.
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Bouarour, Y. I.
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Bouvier, J.
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Brandner, W.
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Garcia, P.
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Koutoulaki, M.
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Labadie, L.
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Linz, H.
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Alécian, E.
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Benisty, M.
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Berger, J. P.
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Bourdarot, G.
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Caselli, P.
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Clénet, Y.
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De Zeeuw, P. T.
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Davies, R. I.
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Eckart, A.
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Eisenhauer, F.
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Förster-Schreibe ...
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Gendron, E.
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Gillessen, S.
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Grant, Sierra L.
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Henning, T.
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Kervella, P.
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Lacour, S.
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Lapeyrère, V.
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Le Bouquin, J. B ...
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Lutz, D.
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Mang, F.
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Nowacki, H.
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Ott, T.
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Paumard, T.
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Perrin, G.
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Shangguan, J.
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Shimizu, T.
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Soulain, A.
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Straubmeier, C.
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Sturm, E.
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Tacconi, L. J.
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van Dishoeck, E. ...
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Vincent, F.
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Widmann, F.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
- By the university
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Chalmers University of Technology