Planet Engulfment Signatures in Twin Stars

• Published in: arXiv.org
• Main Authors: Behmard, Aida, Sevilla, Jason, Fuller, Jim
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 08.02.2023
• Subjects: Astronomical models; Depletion; Deposition; Metallicity; Photosphere; Physics - Earth and Planetary Astrophysics; Physics - Solar and Stellar Astrophysics; Settling; Signatures; Stars; Stellar models

Planet engulfment can be inferred from enhancement of refractory elements in the photosphere of the engulfing star following accretion of rocky planetary material. Such refractory enrichments are subject to stellar interior mixing processes, namely thermohaline mixing induced by an inverse mean-mole...