Flybys in protoplanetary discs – II. Observational signatures
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). ; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 3170680 3170360 1171246 Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) Basal AFB-170002 European Union (EU) 823823 Australian Research Council FT170100040 FT130100034 DP180104235 French National Research Agency (ANR) ANR-16-CE31-0013 European Research Council (ERC) 681601 Iniciativa Cientifica Milenio via the Nucleo Milenio de Formacion Planetaria Chinese Academy of Sciences (CAS) through a CAS-CONICYT Postdoctoral Fellowship FONDEQUIP AIC-57 QUIMAL 130008 BASAL PFB-06 CATA Anillo ACT86
