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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28774
Title: Mapping of shadows cast on a protoplanetary disk by a close binary system
Authors: D'ORAZI, VALENTINA 
GRATTON, Raffaele 
DESIDERA, Silvano 
Avenhaus, H.
MESA, DINO 
Stolker, T.
GIRO, Enrico 
BENATTI, SERENA 
Jang-Condell, H.
RIGLIACO, ELISABETTA 
Sissa, E.
Scatolin, T.
Benisty, M.
Bhowmik, T.
Boccaletti, A.
Bonnefoy, M.
Brandner, W.
Buenzli, E.
Chauvin, G.
Daemgen, S.
Damasso, Mario 
Feldt, M.
Galicher, R.
Girard, J.
Janson, M.
Hagelberg, J.
Mouillet, D.
Kral, Q.
Lannier, J.
Lagrange, A. -M.
Langlois, M.
Maire, A. -L.
Menard, F.
Moeller-Nilsson, O.
Perrot, C.
Peretti, S.
Rabou, P.
Ramos, J.
Rodet, L.
Roelfsema, R.
Roux, A.
Salter, G.
Schlieder, J. E.
Schmidt, T.
Szulagyi, J.
Thalmann, C.
Thebault, P.
van der Plas, G.
Vigan, A.
Zurlo, A.
Issue Date: 2019
Journal: NATURE ASTRONOMY 
Number: 3
First Page: 167
Abstract: For a comprehensive understanding of planetary formation and evolution, we need to investigate the environment in which planets form: circumstellar disks. Here we present high-contrast imaging observations of V4046 Sagittarii, a 20-Myr-old close binary known to host a circumbinary disk. We have discovered the presence of rotating shadows in the disk, caused by mutual occultations of the central binary. Shadow-like features are often observed in disks<SUP>1,2</SUP>, but those found thus far have not been due to eclipsing phenomena. We have used the phase difference due to light travel time to measure the flaring of the disk and the geometrical distance of the system. We calculate a distance that is in very good agreement with the value obtained from the Gaia mission's Data Release 2 (DR2), and flaring angles of α = (6.2 ± 0.6)° and α = (8.5 ± 1.0)° for the inner and outer disk rings, respectively. Our technique opens up a path to explore other binary systems, providing an independent estimate of distance and the flaring angle, a crucial parameter for disk modelling.
URI: http://hdl.handle.net/20.500.12386/28774
URL: https://www.nature.com/articles/s41550-018-0626-6
ISSN: 2397-3366
DOI: 10.1038/s41550-018-0626-6
Bibcode ADS: 2019NatAs...3..167D
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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