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

Víctor 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. Garciá, Patrick Gaulme, Oliver J. Hall, Rasmus Handberg, Marc HonThomas Kallinger, Liu Kang, Mikkel N. Lund, Savita Mathur, Alexey Mints, Benoit Mosser, Zeynep Çelik Orhan, Thaíse S. Rodrigues, Mathieu Vrard, Mutlu Yildiz, Joel C. Zinn, Sibel Örtel, 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. Mario, Ditte Slumstrup, Mark L. Winther, George Angelou, Othman Benomar, Attila Bódi, Bruno L. De Moura, Sébastien Deheuvels, Aliz Derekas, Maria Pia Di Mauro, Marc Antoine Dupret, Antonio Jiménez, Yveline Lebreton, Jaymie Matthews, Nicolas Nardetto, Jose D. Do Nascimento, Filipe Pereira, Luisa F. Rodríguez Diáz, Aldo M. Serenelli, Emanuele Spitoni, Edita Stonkutė, Juan Carlos Suárez, Robert Szabó, Vincent Van Eylen, Rita Ventura, Kuldeep Verma, Achim Weiss, Tao Wu, Thomas Barclay, Jørgen Christensen-Dalsgaard, Jon M. Jenkins, Hans Kjeldsen, George R. Ricker, Sara Seager, Roland Vanderspek

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Article numberL34
JournalAstrophysical Journal Letters
Volume889
Issue number2
DOIs
StatePublished - Feb 1 2020

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Aguirre, V. S., Stello, D., Stokholm, A., Mosumgaard, J. R., Ball, W. H., Basu, S., Bossini, D., Bugnet, L., Buzasi, D., Campante, T. L., Carboneau, L., Chaplin, W. J., Corsaro, E., Davies, G. R., Elsworth, Y., Garciá, R. A., Gaulme, P., Hall, O. J., Handberg, R., ... Vanderspek, R. (2020). Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite. Astrophysical Journal Letters, 889(2), [L34]. https://doi.org/10.3847/2041-8213/ab6443