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

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

Solar and Stellar Astrophysics 2024-04-01 v1 Earth and Planetary Astrophysics

Authors: Aldo G. Sepulveda , Timothy R. Bedding , Simon J. Murphy , Luca Matra , Daniel Huber , Zhoujian Zhang

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.

Keywords

debris disk delta Scuti pulsator asteroseismology time series photometry

Cite

@article{arxiv.2403.19741,
  title  = {The Hybrid Debris Disk Host Star HD 21997 is a High-Frequency Delta Scuti Pulsator},
  author = {Aldo G. Sepulveda and Timothy R. Bedding and Simon J. Murphy and Luca Matra and Daniel Huber and Zhoujian Zhang},
  journal= {arXiv preprint arXiv:2403.19741},
  year   = {2024}
}

Comments

3 pages, 1 figure, submitted to RNAAS

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