UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite

Aguirre, VS; Stello, D; Stokholm, A; Mosumgaard, JR; Ball, WH; Basu, S; Bossini, D; ... Vanderspek, R; + view all (2020) Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite. Astrophysical Journal Letters , 889 (2) 10.3847/2041-8213/ab6443. Green open access

[thumbnail of Aguirre_2020_ApJL_889_L34.pdf]
Preview
Text
Aguirre_2020_ApJL_889_L34.pdf - Published version

Download (878kB) | Preview

Abstract

Since the onset of the "space revolution" of high-precision high-cadence photometry, asteroseismology has been demonstrated as a powerful tool for informing Galactic archeology investigations. The launch of the NASA Transiting Exoplanet Survey Satellite (TESS) mission has enabled seismic-based inferences to go full sky-providing a clear advantage for large ensemble studies of the different Milky Way components. Here we demonstrate its potential for investigating the Galaxy by carrying out the first asteroseismic ensemble study of red giant stars observed by TESS. We use a sample of 25 stars for which we measure their global asteroseimic observables and estimate their fundamental stellar properties, such as radius, mass, and age. Significant improvements are seen in the uncertainties of our estimates when combining seismic observables from TESS with astrometric measurements from the Gaia mission compared to when the seismology and astrometry are applied separately. Specifically, when combined we show that stellar radii can be determined to a precision of a few percent, masses to 5%-10%, and ages to the 20% level. This is comparable to the precision typically obtained using end-of-mission Kepler data.

Type: Article
Title: Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite
Open access status: An open access version is available from UCL Discovery
DOI: 10.3847/2041-8213/ab6443
Publisher version: http://doi.org/10.3847/2041-8213/ab6443
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10093029
Downloads since deposit
18Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item