Flybys in protoplanetary discs - II. Observational signatures

hydrodynamics; methods: numerical; planets and satellites: formation; protoplanetary discs; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Astrophysics of Galaxies; Astrophysics - Solar and; Stellar Astrophysics

Abstract :

[en] Tidal encounters in star clusters perturb discs around young protostars. In Cuello et al., we detailed the dynamical signatures of a stellar flyby in both gas and dust. Flybys produce warped discs, spirals with evolving pitch angles, increasing accretion rates, and disc truncation. Here, we present the corresponding observational signatures of these features in optical/near-infrared scattered light and (sub) millimetre continuum and CO line emission. Using representative prograde and retrograde encounters for direct comparison, we post-process hydrodynamical simulations with radiative transfer methods to generate a catalogue of multiwavelength observations. This provides a reference to identify flybys in recent near-infrared and submillimetre observations (e.g. RW Aur, AS 205, HV Tau and DO Tau, FU Ori, V2775 Ori, and Z CMa).

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Cuello, Nicolás; Pontifical Catholic University of Chile, Department of Astronomy and Astrophysics, Millennium Institute of Astrophysics, Chile, University of Leicester, Department of Physics and Astronomy

Louvet, Fabien; University of Chile, Department of Astronomy

Mentiplay, Daniel; Monash University, School of Astrophysics

Pinte, Christophe; Monash University, School of Astrophysics, Institute de Planetologie et d'Astrophysique de Grenoble

Price, Daniel J.; Monash University, School of Astrophysics

Winter, Andrew J.; University of Leicester, Department of Physics and Astronomy

Nealon, Rebecca; University of Leicester, Department of Physics and Astronomy

Ménard, François; Institute de Planetologie et d'Astrophysique de Grenoble

Lodato, Giuseppe; University of Milan, Department of Physics

Dipierro, Giovanni; University of Leicester, Department of Physics and Astronomy

More authors (7 more)

Language :

English

Title :

Flybys in protoplanetary discs - II. Observational signatures

Publication date :

01 January 2020

Journal title :

Monthly Notices of the Royal Astronomical Society

ISSN :

0035-8711

eISSN :

1365-2966

Publisher :

Oxford University Press, Oxford, Gb

Volume :

491

Pages :

504-514

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://ui.adsabs.harvard.edu/abs/2020MNRAS.491..504C

Available on ORBi :

since 09 January 2024

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