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Detection of Solar-like Oscillations in Sub-giant and Red Giant Stars Using 2-minute Cadence TESS Data

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arxiv 2401.11134 v1 pith:6GQ7DDUB submitted 2024-01-20 astro-ph.SR astro-ph.EP

Detection of Solar-like Oscillations in Sub-giant and Red Giant Stars Using 2-minute Cadence TESS Data

classification astro-ph.SR astro-ph.EP
keywords datadeltafrequencyoscillatorssolar-liketesscadencedetected
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Based on all 2-minute cadence $TESS$ light curves from Sector 1 to 60, we provide a catalog of 8,651 solar-like oscillators, including frequency at maximum power ($\nu_{\rm max}$, with its median precision, $\sigma$=5.39\%), large frequency separation ($\Delta\nu$, $\sigma$=6.22\%), seismically derived masses, radii, and surface gravity. In this sample, we have detected 2,173 new oscillators and added 4,373 new $\Delta\nu$ measurements. Our seismic parameters are consistent with those from $Kepler$, $K2$, and previous $TESS$ data. The median fractional residual in $\nu_{\rm max}$ is $1.63\%$ with a scatter of $14.75\%$, and in $\Delta\nu$ it is $0.11\%$ with a scatter of $10.76\%$. We have detected 476 solar-like oscillators with $\nu_{\rm max}$ exceeding the $Nyquist$ frequency of $Kepler$ long-cadence data during the evolutionary phases of sub-giant and the base of the red-giant branch, which provide a valuable resource for understanding angular momentum transport.

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Cited by 1 Pith paper

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    astro-ph.SR 2025-09 unverdicted

    A curated review of TESS-era results across the major classes of variable stars, with illustrative light curves, but with no new observational or theoretical result.