Thomas Steindl
Thomas Steindl
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Searching for solar-like oscillations in pre-main sequence stars using APOLLO

To the publication:
NASA ADS       arxiv.org

Technology used:

APOLLO, Python, MESA, DIAMONDS, etc

Publication abstract:

In recent years, our understanding of solar-like oscillations from main sequence to red giant stars has improved dramatically thanks to pristine data collected from space telescopes. One of the remaining open questions focuses around the observational identification of solar-like oscillations in pre-main sequence stars. We aim to develop an improved method to search for solar-like oscillations in pre-main sequence stars and apply it to data collected by the Kepler K2 mission. Our software APOLLO includes a novel way to detect low signal-to-noise ratio solar like oscillations in the presence of a high background level. By calibrating our method using known solar-like oscillators from the main Kepler mission, we apply it to T Tauri stars observed by Kepler K2 and identify several candidate pre-main sequence solar-like oscillators. We find that our method is robust even when applied to time-series of observational lengths as short as those obtained with the TESS satellite in one sector. We identify EPIC 205375290 as a possible candidate for solar-like oscillations in a pre-main sequence star with νmax≃242μ Hz. We also derive EPIC 205375290's fundamental parameters to be Teff = 3670 ± 180 K, log g = 3.85 ± 0.3, v sin i = 8 ± 1 km/s , and about solar metallicity from a high-resolution spectrum obtained from the Keck archive.


About me

Thomas Steindl MSc

PhD student at the Institute for Astro- and Particle physics at the University Innsbruck

Research Group of Univ. Prof. Mag. Dr. Konstanze Zwintz

Links
  • Universität Innsbruck
  • Institute for Astro- and Particle Physics
  • Konstanze Zwintz
  • TESS
  • BRITE constellation
Tools & Software
  • MESA
  • GYRE
  • SMURFS
  • Phoebe
Location

Technikerstraße 25 | 6020 Innsbruck | Room: 8/07

+43 512 507 52031

thomas.steindl@uibk.ac.at