Mapping of shadows cast on a protoplanetary disk by a close binary system

D'Orazi, V.; Gratton, R.; Desidera, S.; Avenhaus, H.; Mesa, D.; Stolker, T.; Giro, E.; Benatti, S.; Jang-Condell, H.; Rigliaco, E.; Sissa, E.; Scatolin, T.; Benisty, M.; Bhowmik, T.; Boccaletti, A.; Bonnefoy, M.; Brandner, W.; Buenzli, E.; Chauvin, G.; Daemgen, S.; Damasso, M.; Feldt, M.; Galicher, Raphaël; Girard, J.; Janson, M.; Hagelberg, J.; Mouillet, D.; Kral, Q.; Lannier, J.; Lagrange, A.-M.; Langlois, M.; Maire, Anne-Lise; 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.

doi:10.1038/s41550-018-0626-6

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Mapping of shadows cast on a protoplanetary disk by a close binary system

D'Orazi, V.; Gratton, R.; Desidera, S. et al.

2019 • In Nature Astronomy, 3, p. 167-172

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https://hdl.handle.net/2268/243816

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10.1038/s41550-018-0626-6

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Keywords :

Astrophysics - Solar and Stellar Astrophysics

Abstract :

[en] 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.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

D'Orazi, V.; INAF Osservatorio Astronomico di Padova, Padova, Italy

Gratton, R.; INAF Osservatorio Astronomico di Padova, Padova, Italy

Desidera, S.; INAF Osservatorio Astronomico di Padova, Padova, Italy

Avenhaus, H.; Max Planck Institute for Astronomy, Heidelberg, Germany ; Institute for Particle Physics and Astrophysics, ETH Zurich, Zurich, Switzerland

Mesa, D.; INAF Osservatorio Astronomico di Padova, Padova, Italy ; INCT, Universidad De Atacama, Copiapó, Atacama, Chile

Stolker, T.; Institute for Particle Physics and Astrophysics, ETH Zurich, Zurich, Switzerland

Giro, E.; INAF Osservatorio Astronomico di Padova, Padova, Italy ; INAF Osservatorio Astronomico di Brera, Merate, Italy

Benatti, S.; INAF Osservatorio Astronomico di Padova, Padova, Italy

Jang-Condell, H.; Department of Physics and Astronomy, University of Wyoming, Laramie, WY, USA

Rigliaco, E.; INAF Osservatorio Astronomico di Padova, Padova, Italy

More authors (40 more)

Language :

English

Title :

Mapping of shadows cast on a protoplanetary disk by a close binary system

Publication date :

01 November 2019

Journal title :

Nature Astronomy

eISSN :

2397-3366

Publisher :

Springer Nature

Volume :

Pages :

167-172

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://ui.adsabs.harvard.edu/abs/2019NatAs...3..167D

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since 21 January 2020

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