Detection of p-mode Oscillations in HD 35833 with NEID and TESS

Arvind F. Gupta, Jacob Luhn, Jason T. Wright, Suvrath Mahadevan, Eric B. Ford, Guđmundur Stefánsson, Chad F. Bender, Cullen H. Blake, Samuel Halverson, Fred Hearty, Shubham Kanodia, Sarah E. Logsdon, Michael W. McElwain, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Ryan C. Terrien

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report the results of observations of p-mode oscillations in the G0 subgiant star HD 35833 in both radial velocities and photometry with NEID and TESS, respectively. We achieve separate, robust detections of the oscillation signal with both instruments (radial velocity amplitude A RV = 1.11 ± 0.09 m s−1, photometric amplitude A phot = 6.42 ± 0.60 ppm, frequency of maximum power ν max = 595.71 ± 17.28 μHz, and mode spacing Δν = 36.65 ± 0.96 μHz) as well as a nondetection in a TESS sector concurrent with the NEID observations. These data shed light on our ability to mitigate the correlated noise impact of oscillations with radial velocities alone and on the robustness of commonly used asteroseismic scaling relations. The NEID data are used to validate models for the attenuation of oscillation signals for exposure times t < ν max − 1 , and we compare our results to predictions from theoretical scaling relations and find that the observed amplitudes are weaker than expected by >4σ, hinting at gaps in the underlying physical models.

Original languageEnglish (US)
Article number254
JournalAstronomical Journal
Volume164
Issue number6
DOIs
StatePublished - Dec 1 2022

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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