A Catalogue of Solar-Like Oscillators Observed by TESS in 120-second and 20-second Cadence

Abstract

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. We aim to produce a catalogue of solar-like oscillators observed by TESS in the 120-second and 20-second cadence modes. The catalogue is intended to highlight stars oscillating at frequencies above the TESS 30-minute 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 ${\nu }_{\max }$ and $\Delta \nu$. We apply a new probabilistic detection algorithm to the 120-second and 20-second light curves of over 250,000 stars. This algorithm flags targets that show characteristic signatures of solar-like oscillations. We manually vet the resulting list of targets to confirm the presence of solar-like oscillations. Using the probability densities computed by the algorithm, we measure the global asteroseismic parameters ${\nu }_{\max }$ and $\Delta \nu$. We produce a catalogue of 4,177 solar-like oscillators, reporting $\Delta \nu$ and ${\nu }_{\max }$ for $98\%$ of the total star count. The asteroseismic data reveals vast coverage of the HR diagram, populating the red giant branch, the subgiant regime and extending toward the main sequence. A crossmatch with external catalogs 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.

Accepted at Astronomy & Astrophysics, 11 pages, 11 figures, online material to be made available

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• Precision timing of eclipsing binaries from TESS full frame images. Method and performance
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• The true nature of HE0057-5959, the most metal-poor Li-rich star
• Asteroseismology with PBjam 2.0: measuring dipole mode frequencies in coupling regimes from main sequence to low-luminosity red giant stars
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• The impact of rotation on the stochastic excitation of stellar acoustic modes in solar-like pulsators
• Projected spin-orbit alignments from Kepler asteroseismology and Gaia astrometry
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• Finger on the pulse of asteroseismology
• Perspectives on the Physics of Late-Type Stars from Beyond Low Earth Orbit, the Moon and Mars
• Pushing the Limit of Asteroseismic Detection for Cool Dwarfs using TESS and Deep Learning