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Probing initial distributions of orbital eccentricity and disc misalignment via polar discs

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arxiv 2401.03767 v1 pith:LKNWZSYK submitted 2024-01-08 astro-ph.EP astro-ph.SR

classification astro-ph.EPastro-ph.SR
keywords orbitaldiscseccentricityinitialpolardiscdistributionsmultiple
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In a population of multiple protostellar systems with discs, the sub-population of circumbinary discs whose orbital plane is highly misaligned with respect to the binary's orbital plane constrains the initial distribution of orbital parameters of the whole population. We show that by measuring the polar disc fraction and the average orbital eccentricity in the polar discs, one can constrain the distributions of initial eccentricity and mutual inclination in multiple stellar systems at birth.

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  1. Circumstellar and circumbinary discs in multiple stellar systems

    astro-ph.EP 2025-01 conditional novelty 1.0 of 10

    This review consolidates current knowledge on how stellar multiplicity shapes protoplanetary disc structure, dust evolution, and planet formation outcomes.

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