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Insights from Analytical Theory of Eccentric Circumbinary Disks
Marcela Grcic, Daniel J. D'Orazio, Martin E. Pessah
Eccentric cavities in circumbinary disks precess on timescales much longer than the binary orbital period. These long-lived steady states can be understood as trapped modes in an e…
The Santa Barbara Binary-Disk Code Comparison
Paul C. Duffell, Alexander J. Dittmann, Daniel J. D'Orazio +13
We have performed numerical calculations of a binary interacting with a gas disk, using eleven different numerical methods and a standard binary-disk setup. The goal of this study…
Circumbinary Disks: Accretion and Torque as a Function of Mass Ratio and Disk Viscosity
Paul C. Duffell, Daniel D'Orazio, Andrea Derdzinski +4
Using numerical hydrodynamics calculations and a novel method for densely sampling parameter space, we measure the accretion and torque on a binary system from a circumbinary disk.…
Stellar multiplicity: an interdisciplinary nexus
Katelyn Breivik, Adrian M. Price-Whelan, Daniel J. D'Orazio +5
Our uncertainties about binary star systems (and triples and so on) limit our capabilities in literally every single one of the Thematic Areas identified for Astro2020. We need to…