Search: onr:"swepub:oai:DiVA.org:su-184502" >
Gap, shadows, spira...
Gap, shadows, spirals, and streamers : SPHERE observations of binary-disk interactions in GG Tauri A
-
Keppler, M. (author)
-
Penzlin, A. (author)
-
Benisty, M. (author)
-
show more...
-
van Boekel, R. (author)
-
Henning, T. (author)
-
van Holstein, R. G. (author)
-
Kley, W. (author)
-
Garufi, A. (author)
-
Ginski, C. (author)
-
Brandner, W. (author)
-
Bertrang, G. H.-M. (author)
-
Boccaletti, A. (author)
-
de Boer, J. (author)
-
Bonavita, M. (author)
-
Brown Sevilla, S. (author)
-
Chauvin, G. (author)
-
Dominik, C. (author)
-
- Janson, Markus (author)
- Stockholms universitet,Institutionen för astronomi
-
Langlois, M. (author)
-
Lodato, G. (author)
-
Maire, A.-L. (author)
-
Ménard, F. (author)
-
Pantin, E. (author)
-
Pinte, C. (author)
-
Stolker, T. (author)
-
Szulágyi, J. (author)
-
Thebault, P. (author)
-
Villenave, M. (author)
-
Zurlo, A. (author)
-
Rabou, P. (author)
-
Feautrier, P. (author)
-
Feldt, M. (author)
-
Madec, F. (author)
-
Wildi, F. (author)
-
show less...
-
(creator_code:org_t)
- 2020-07-08
- 2020
- English.
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 639
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://www.aanda.or...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Context. A large portion of stars is found to be part of binary or higher-order multiple systems. The ubiquity of planets found around single stars raises the question of whether and how planets in binary systems form. Protoplanetary disks are the birthplaces of planets, and characterizing them is crucial in order to understand the planet formation process.Aims. Our goal is to characterize the morphology of the GG Tau A disk, one of the largest and most massive circumbinary disks. We also aim to trace evidence for binary-disk interactions.Methods. We obtained observations in polarized scattered light of GG Tau A using the SPHERE/IRDIS instrument in the H-band filter. We analyzed the observed disk morphology and substructures. We ran 2D hydrodynamical models to simulate the evolution of the circumbinary ring over the lifetime of the disk.Results. The disk and also the cavity and the inner region are highly structured, with several shadowed regions, spiral structures, and streamer-like filaments. Some of these are detected here for the first time. The streamer-like filaments appear to connect the outer ring with the northern arc. Their azimuthal spacing suggests that they may be generated through periodic perturbations by the binary, which tear off material from the inner edge of the outer disk once during each orbit. By comparing observations to hydrodynamical simulations, we find that the main features, in particular, the gap size, but also the spiral and streamer filaments, can be qualitatively explained by the gravitational interactions of a binary with a semimajor axis of similar to 35 au on an orbit coplanar with the circumbinary ring.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- stars: individual: GG Tau A
- protoplanetary disks
- methods: observational
- methods: numerical
- techniques: high angular resolution
- techniques: polarimetric
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Keppler, M.
-
Penzlin, A.
-
Benisty, M.
-
van Boekel, R.
-
Henning, T.
-
van Holstein, R. ...
-
show more...
-
Kley, W.
-
Garufi, A.
-
Ginski, C.
-
Brandner, W.
-
Bertrang, G. H.- ...
-
Boccaletti, A.
-
de Boer, J.
-
Bonavita, M.
-
Brown Sevilla, S ...
-
Chauvin, G.
-
Dominik, C.
-
Janson, Markus
-
Langlois, M.
-
Lodato, G.
-
Maire, A.-L.
-
Ménard, F.
-
Pantin, E.
-
Pinte, C.
-
Stolker, T.
-
Szulágyi, J.
-
Thebault, P.
-
Villenave, M.
-
Zurlo, A.
-
Rabou, P.
-
Feautrier, P.
-
Feldt, M.
-
Madec, F.
-
Wildi, F.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
- Articles in the publication
-
Astronomy and As ...
- By the university
-
Stockholm University