1. Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite
- Author
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Victor Silva Aguirre, Dennis Stello, Amalie Stokholm, Jakob R. Mosumgaard, Warrick H. Ball, Sarbani Basu, Diego Bossini, Lisa Bugnet, Derek Buzasi, Tiago L. Campante, Lindsey Carboneau, William J. Chaplin, Enrico Corsaro, Guy R. Davies, Yvonne Elsworth, Rafael A. Garcia, Patrick Gaulme, Oliver J. Hall, Rasmus Handberg, Marc Hon, Thomas Kallinger, Liu Kang, Mikkel N. Lund, Savita Mathur, Alexey Mints, Benoit Mosser, Zeynep Celik Orhan, Thaise S. Rodrigues, Mathieu Vrard, Mutlu Yıldız, Joel C. Zinn, Sibel Ortel, Paul G. Beck, Keaton J. Bell, Zhao Guo, Chen Jiang, James S. Kuszlewicz, Charles A. Kuehn, Tanda Li, Mia S. Lundkvist, Marc Pinsonneault, Jamie Tayar, Margarida S. Cunha, Saskia Hekker, Daniel Huber, Andrea Miglio, Mario J. P. F. G. Monteiro, Ditte Slumstrup, Mark L. Winther, George Angelou, Othman Benomar, Attila Bodi, Bruno L. De Moura, Sebastien Deheuvels, Aliz Derekas, Maria Pia Di Mauro, Marc-Antoine Dupret, Antonio Jimenez, Yveline Lebreton, Jaymie Matthews, Nicolas Nardetto, Jose D. do Nascimento Jr, Filipe Pereira, Luisa F. Rodriguez Díaz, Aldo M. Serenelli, Emanuele Spitoni, Edita Stonkute, Juan Carlos Suarez, Robert Szabo, Vincent Van Eylen, Rita Ventura, Kuldeep Verma, Achim Weiss, Tao Wu, Thomas Barclay, Jorgen Christensen-Dalsgaard, Jon M Jenkins, Hans Kjeldsen, George R Ricker, Sara Seager, and Roland Vanderspek
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Astrophysics ,Astronomy - 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.
- Published
- 2020
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