Debris Discs in Binaries: Spatial Structures

Details Debris Discs in Binaries: Spatial Structures Debris Discs in Binaries: Spatial Structures

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..568t&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.568

Computer Science

Scientific paper

Following the preliminary results of [6], we present new simulations of the evolution of debris discs in binaries using a new, specifically developed code that can handle both the dynamical and collisional evolution of the system. We show how the radial extension of the disc and its shape crucially depend on the companion star's orbit. The complex interplay between gravitational perturbations and collisional production of small grains leads to the development of periodic and short-lived (for very eccentric binaries) or longlived- but-precessing (for circular orbits) spiral structures. We also find that the disc morphology strongly depends on the companion star's position on its orbit. We compare these results to known debris discs in order to assert to what extent binarity can be the source of observed spatial structures. Our new code has the potential to be applied to all perturbed debris discs cases.

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