The Hybrid Debris Disk Host Star HD 21997 is a High-frequency Delta Scuti Pulsator
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.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- April 2024
- DOI:
- arXiv:
- arXiv:2403.19741
- Bibcode:
- 2024RNAAS...8...98S
- Keywords:
-
- Delta Scuti variable stars;
- Stellar pulsations;
- Variable stars;
- 370;
- 1625;
- 1761;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 3 pages, 1 figure, submitted to RNAAS
