Catalogue of solar-like oscillators observed by TESS in 120-s and 20-s cadence
Abstract
Context. The Transiting Exoplanet Survey Satellite (TESS) mission has provided photometric light curves for stars across nearly the entire sky. This allows for the application of asteroseismology to a pool of potential solar-like oscillators that is unprecedented in size.
Aims: We aim to produce a catalogue of solar-like oscillators observed by TESS in the 120-s and 20-s cadence modes. The catalogue is intended to highlight stars oscillating at frequencies above the TESS 30-min cadence Nyquist frequency with the purpose of encompassing the main-sequence and subgiant evolutionary phases. We aim to provide estimates for the global asteroseismic parameters vmax and ∆v.
Methods: We applied a new probabilistic detection algorithm to the 120-s and 20-s light curves of over 250 000 stars. This algorithm flags targets that show characteristic signatures of solar-like oscillations. We manually vetted the resulting list of targets to confirm the presence of solar-like oscillations. Using the probability densities computed by the algorithm, we measured the global asteroseismic parameters vmax and ∆v.
Results: We produce a catalogue of 4177 solar-like oscillators, reporting ∆v and vmax for 98% of the total star count. The asteroseismic data reveal a vast coverage of the Hertzsprung-Russell diagram, populating the red giant branch, the subgiant regime, and extending towards the main sequence.
Conclusions: A crossmatch with external catalogues shows that 25 of the detected solar-like oscillators are a component of a spectroscopic binary, and 28 are confirmed planet host stars. These results provide the potential for precise, independent asteroseismic constraints on these and any additional TESS targets of interest.
- Publication:
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Astronomy and Astrophysics
- Pub Date:
- January 2023
- DOI:
- 10.1051/0004-6361/202244579
- arXiv:
- arXiv:2210.09109
- Bibcode:
- 2023A&A...669A..67H
- Keywords:
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- asteroseismology;
- catalogs;
- stars: oscillations;
- methods: data analysis;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- Accepted at Astronomy &