The CoRoT star ID100866999: a hybrid gamma Doradus - delta Scuti star in an eclipsing binary system
E. Chapellier, and P. Mathias

TL;DR
This study analyzes a hybrid gamma Doradus - delta Scuti star in an eclipsing binary system, revealing detailed pulsation modes, fundamental parameters, and interactions between g- and p-modes, advancing stellar modeling and binary star understanding.
Contribution
It provides the first detailed analysis of a hybrid pulsating star within an eclipsing binary, identifying numerous pulsation frequencies and mode interactions.
Findings
124 frequencies detected related to luminosity variations
Identification of 22 g-modes with constant period spacing
Detection of mode interactions and combination frequencies
Abstract
The presence of g- and p-modes allows testing stellar models from the core to the envelope. Moreover, binarity in an eclipsing system constrains the physical parameters of the pulsating star. CoRot ID 100866999 is a relatively large-amplitude hybrid gDor - dSct star with two clearly distinct frequency domains. The large number of detected frequencies allows a detailed study of the interaction between them. In addition, we can derive the fundamental parameters of both components from the study of the eclipsing light curve. After removing the eclipsing phases, we analyzed the data with the Period04 package up to S/N=4. The light curve was then prewhitened with these oscillation frequencies to derive the fundamental parameters of the two components. The eclipsing light curve analysis results in a (1.8+1.1)\,Mo system, both components being main sequence stars. We detect 124 frequencies…
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