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arXiv · 2403.19741

The Hybrid Debris Disk Host Star HD 21997 is a High-Frequency Delta Scuti Pulsator

Aldo G. Sepulveda·Timothy R. Bedding·Simon J. Murphy·Luca Matra·Daniel Huber·Zhoujian Zhang
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Abstract

HD 21997 is host to a prototypical "hybrid" debris disk characterized by debris disk-like dust properties and a CO gas mass comparable to a protoplanetary disk. We use Transiting Exoplanet Survey Satellite time series photometry to demonstrate that HD 21997 is a high-frequency delta Scuti pulsator. If the mode identification can be unambiguously determined in future works, an asteroseismic age of HD 21997 may become feasible.

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Aldo G. Sepulveda, Timothy R. Bedding, Simon J. Murphy, Luca Matra, Daniel Huber, Zhoujian Zhang. 2024-03-28. The Hybrid Debris Disk Host Star HD 21997 is a High-Frequency Delta Scuti Pulsator. https://arxiv.org/abs/2403.19741

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