Dust dynamics in planet-forming discs in binary systems
Institute of Astronomy, University of Cambridge, Madingley Rd, CB3 0HA, Cambridge, UK
2 Leiden Observatory, Leiden University, PO Box 9513, Niels Bohrweg 2, 2300 RA, Leiden, The Netherlands
3 School of Physics and Astronomy, University of Leicester, University Rd, LE1 7RH, Leicester, UK
4 Dipartimento di Fisica, Università degli Studi di Milano, Via Giovanni Celoria 16, 20133, Milano, Italy
Accepted: 13 December 2022
Published online: 16 January 2023
In multiple stellar systems, interactions among the companion stars and their discs affect planet formation. In the circumstellar case, tidal truncation makes protoplanetary discs smaller, fainter and less long-lived than those evolving in isolation, thereby reducing the amount of material (gas and dust) available to assemble planetary embryos. On the contrary, in the circumbinary case the reduced accretion can increase the disc lifetime, with beneficial effects on planet formation. In this chapter we review the main observational results on discs in multiple stellar systems and discuss their possible explanations, focusing on recent numerical simulations, mainly dealing with dust dynamics and disc evolution. Finally, some open issues and future research directions are examined.
© The Author(s) 2023
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