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

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Aguirre, VS (Author) Other; Stello, D (Author) Other; Stokholm, A (Author) Other; Mosumgaard, JR (Author) Other; Ball, WH (Author) Other; Basu, S (Author) Other; Bossini, D (Author) Other; Bugnet, L (Author) Other; Buzasi, D (Author) Other; Campante, TL (Author) FCUP; Carboneau, L (Author) Other; Chaplin, WJ (Author) Other; Corsaro, E (Author) Other; Davies, GR (Author) Other; Elsworth, Y (Author) Other; Garcia, RA (Author) Other; Gaulme, P (Author) Other; Hall, OJ (Author) Other; Handberg, R (Author) Other; Hon, M (Author) Other; Kallinger, T (Author) Other; Kang, L (Author) Other; Lund, MN (Author) Other; Mathur, S (Author) Other; Mints, A (Author) Other; Mosser, B (Author) Other; Orhan, ZC (Author) Other; Rodrigues, TS (Author) Other; Vrard, M (Author) Other; Yildiz, M (Author) Other; Zinn, JC (Author) Other; Ortel, S (Author) Other; Beck, PG (Author) Other; Bell, KJ (Author) Other; Guo, Z (Author) Other; Jiang, C (Author) Other; Kuszlewicz, JS (Author) Other; Kuehn, CA (Author) Other; Li, TD (Author) Other; Lundkvist, MS (Author) Other; Pinsonneault, M (Author) Other; Tayar, J (Author) Other; Cunha, MS (Author) FCUP; Hekker, S (Author) Other; Huber, D (Author) Other; Miglio, A (Author) Other; Monteiro, MJPFG (Author) FCUP; Slumstrup, D (Author) Other; Winther, ML (Author) Other; Angelou, G (Author) Other; Benomar, O (Author) Other; Bodi, A (Author) Other; De Moura, BL (Author) Other; Deheuvels, S (Author) Other; Derekas, A (Author) Other; Di Mauro, MP (Author) Other; Dupret, MA (Author) Other; Jimenez, A (Author) Other; Lebreton, Y (Author) Other; Matthews, J (Author) Other; Nardetto, N (Author) Other; do Nascimento Jr, JD (Author) Other; Pereira, F (Author) Other; Diaz, LFR (Author) Other; Serenelli, AM (Author) Other; Spitoni, E (Author) Other; Stonkut, E (Author) Other; Carlos Suarez, JC (Author) Other; Szab, R (Author) Other; Van Eylen, V (Author) Other; Ventura, R (Author) Other; Verma, K (Author) Other; Weiss, A (Author) Other; Wu, T (Author) Other; Barclay, T (Author) Other; Christensen Dalsgaard, J (Author) Other; Jenkins, JM (Author) Other; Kjeldsen, H (Author) Other; Ricker, GR (Author) Other; Seager, S (Author) Other; Vanderspek, R (Author) Other

Journal

Title: Astrophysical Journal Letters

Vol. 889

Final page: L34

ISSN: 2041-8205

Publisher: American Astronomical Society

Indexing

ISI Web of Knowledge - 31 Citations

Scopus - 18 Citations

Other information

Authenticus ID: P-00R-VM0

DOI: 10.3847/2041-8213/ab6443

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8