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

Victor Silva Aguirre (1) , Dennis Stello (2) , Amalie Stokholm , Jakob R. Mosumgaard (3) , Warrick H. Ball (4) , Sarbani Basu (5) , Diego Bossini , Lisa Bugnet , Derek Buzasi , Tiago L. Campante (6) , Lindsey Carboneau , William J. Chaplin (7) , Enrico Corsaro (8) , Guy R. Davies (1) , Yvonne Elsworth (9) , Rafael A. Garcia (8) , Patrick Gaulme , Oliver J. Hall , Rasmus Handberg (3) , Marc Hon , Thomas Kallinger (10) , Liu Kang , Mikkel N. Lund (11) , Savita Mathur (12) , Alexey Mints , Benoit Mosser (13) , Zeynep Çelik Orhan , Thaíse S. Rodrigues , Mathieu Vrard (14) , Mutlu Yildiz , Joel C. Zinn , Sibel Örtel , Paul G. Beck (8) , Keaton J. Bell , Zhao Guo , Chen Jiang , James S. Kuszlewicz , Charles A. Kuehn , Tanda Li , Mia S. Lundkvist , Marc Pinsonneault (15) , Jamie Tayar (15) , Margarida S. Cunha , Saskia Hekker (9) , Daniel Huber (16) , Andrea Miglio (17) , Mario J. P. F. G. Monteiro , Ditte Slumstrup , Mark L. Winther , George Angelou , Othman Benomar , Attila Bódi , Bruno L. de Moura , Sébastien Deheuvels , Aliz Derekas , Maria Pia Di Mauro (18) , Marc-Antoine Dupret , Antonio [e-mail] Jiménez (19) , Yveline Lebreton (20, 13) , Jaymie Matthews , Nicolas Nardetto (21) , Jose D. Do Nascimento , Filipe Pereira (22) , Luisa F. Rodríguez Díaz , Aldo M. Serenelli (23) , Emanuele Spitoni , Edita Stonkutė , Juan Carlos Suárez (24) , Robert Szabó (25) , Vincent van Eylen , Rita Ventura , Kuldeep Verma (3) , Achim Weiss (23) , Tao Wu (26) , Thomas Barclay (27) , Jørgen Christensen-Dalsgaard (6) , Jon M. Jenkins (28) , Hans Kjeldsen (6) , George R. Ricker (29) , Sara Seager , Roland Vanderspek , Jakob Mosumgaard , Warrick Ball , Tiago Campante , William Chaplin (30) , Guy Davies , Rafael Garcia (31) , Oliver Hall , Mikkel Lund , Thaíse Rodrigues , Joel Zinn (15) , Paul R Beck (8) , Keaton Bell , James D Kuszlewicz (2) , Charles Kuehn , Mia Lundkvist , Margarida Cunha , Mario F. G. Monteiro , Mark Winther , Bruno de Moura , Jose Do Nascimento , Luisa Rodríguez Díaz , Aldo Serenelli (32) , Jon Jenkins (28) , George R. Ricker (29)

1 Department of Physics and Astronomy [Aarhus]
2 SAC - Stellar Astrophysics Centre [Aarhus]
3 Aarhus University [Aarhus]
4 Georg-August-University = Georg-August-Universität Göttingen
5 NUS - National University of Singapore
6 DASC - Danish AsteroSeismology Centre
7 School of Physics and Astronomy [Birmingham]
8 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
9 School of Physics and Astronomy
10 Instituut voor Sterrenkunde [Leuven]
11 Aston University [Birmingham]
12 SSI - Space Science Institute [Boulder]
13 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics
14 Observatoire de Paris
15 Ohio State University - Department of Astronomy
16 SIfA - Sydney Institute for Astronomy
17 Département des Sciences et Gestion de l'Environnement/Océanologie [Liège]
18 IASF-Roma - Istituto di Astrofisica Spaziale e Fisica cosmica - Roma
19 CAR - Centre for Automation and Robotics
20 IPR - Institut de Physique de Rennes
21 LAGRANGE - Joseph Louis LAGRANGE
22 Instituto de Patologia e Imunologia Molecular
23 MPA - Max-Planck-Institut für Astrophysik
24 IAA - Instituto de Astrofísica de Andalucía
25 Konkoly Observatory
26 Institute of Cardiology
27 ARC-CREST - NASA Ames Research Center Cooperative for Research in Earth Science in Technology
28 ARC - NASA Ames Research Center
29 CSR - Center for Space Research [Cambridge]
30 Department of Psychology
31 VICOROB - Research institute of Computer Vision and Robotics [Girona]
32 ICE-CSIC - Institute of Space Sciences [Barcelona]

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.

Domaines: Physique [physics]; Astrophysique [astro-ph]; Astrophysique stellaire et solaire [astro-ph.SR]

Victor Silva Aguirre, Dennis Stello, Amalie Stokholm, Jakob R. Mosumgaard, Warrick H. Ball, et al.. Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite. The Astrophysical journal letters, 2020, 889 (2), pp.L34. ⟨10.3847/2041-8213/ab6443⟩. ⟨hal-02475599⟩