Detection and characterisation of oscillating red giants: first results from the TESS satellite
Creators: name: Aguirre, Víctor Silva
name: Stello, Dennis
name: Stokholm, Amalie
name: Mosumgaard, Jakob R.
name: Ball, Warrick
name: Basu, Sarbani
name: Bossini, Diego
name: Bugnet, Lisa
name: Buzasi, Derek
name: Campante, Tiago L.
name: Carboneau, Lindsey
name: Chaplin, William J.
name: Corsaro, Enrico
name: Davies, Guy R.
name: Elsworth, Yvonne
name: García, Rafael A.
name: Gaulme, Patrick
name: Hall, Oliver J.
name: Handberg, Rasmus
name: Hon, Marc
name: Kallinger, Thomas
name: Kang, Liu
name: Lund, Mikkel N.
name: Mathur, Savita
name: Mints, Alexey
name: Mosser, Benoit
name: Orhan, Zeynep Çelik
name: Rodrigues, Thaíse S.
name: Vrard, Mathieu
name: Yıldız, Mutlu
name: Zinn, Joel C.
name: Örtel, Sibel
name: Beck, Paul G.
name: Bell, Keaton J.
name: Guo, Zhao
name: Jiang, Chen
name: Kuszlewicz, James S.
name: Kuehn, Charles A.
name: Li, Tanda
name: Lundkvist, Mia S.
name: Pinsonneault, Marc
name: Tayar, Jamie
name: Cunha, Margarida S.
name: Hekker, Saskia
name: Huber, Daniel
name: Miglio, Andrea
name: Monteiro, Mario J. P. F. G.
name: Slumstrup, Ditte
name: Winther, Mark L.
name: Angelou, George
name: Benomar, Othman
name: Bódi, Attila
name: De Moura, Bruno L.
name: Deheuvels, Sébastien
name: Derekas, Aliz
name: Di Mauro, Maria Pia
name: Dupret, Marc-Antoine
name: Jiménez, Antonio
name: Lebreton, Yveline
name: Matthews, Jaymie
name: Nardetto, Nicolas
name: Nascimento,, Jose D. do
name: Pereira, Filipe
name: Díaz, Luisa F. Rodríguez
name: Serenelli, Aldo M.
name: Spitoni, Emanuele
name: Stonkutė, Edita
name: Suárez, Juan Carlos
name: Szabó, Robert
name: Van Eylen, Vincent
name: Ventura, Rita
name: Verma, Kuldeep
name: Weiss, Achim
name: Wu, Tao
name: Barclay, Thomas
name: Christensen-Dalsgaard, Jørgen
name: Jenkins, Jon M.
name: Kjeldsen, Hans
name: Ricker, George R.
name: Seager, Sara
name: Vanderspek, Roland
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Since the onset of the `space revolution' of high-precision high-cadence photometry, asteroseismology has been demonstrated as a powerful tool for informing Galactic archaeology investigations. The launch of the NASA 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
description: Accepted for publication in ApJ Letters