Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite
Author(s)Aguirre, Víctor Silva; Stello, Dennis; Stokholm, Amalie; Mosumgaard, Jakob R.; Ball, Warrick H.; Basu, Sarbani; Bossini, Diego; Bugnet, Lisa; Buzasi, Derek; Campante, Tiago L.; Carboneau, Lindsey; Chaplin, William J.; Corsaro, Enrico; Davies, Guy R.; Elsworth, Yvonne; García, Rafael A.; Gaulme, Patrick; Hall, Oliver J.; Handberg, Rasmus; Hon, Marc; Kallinger, Thomas; Kang, Liu; Lund, Mikkel N.; Mathur, Savita; Mints, Alexey; Mosser, Benoit; Çelik Orhan, Zeynep; Rodrigues, Thaíse S.; Vrard, Mathieu; Yıldız, Mutlu; Zinn, Joel C.; Örtel, Sibel; Beck, Paul G.; Bell, Keaton J.; Guo, Zhao; Jiang, Chen; Kuszlewicz, James S.; Kuehn, Charles A.; Li, Tanda; Lundkvist, Mia S.; Pinsonneault, Marc; Tayar, Jamie; Cunha, Margarida S.; Hekker, Saskia; Huber, Daniel; Miglio, Andrea; F. G. Monteiro, Mario J. P.; Slumstrup, Ditte; Winther, Mark L.; Angelou, George; Benomar, Othman; Bódi, Attila; De Moura, Bruno L.; Deheuvels, Sébastien; Derekas, Aliz; Di Mauro, Maria Pia; Dupret, Marc-Antoine; Jiménez, Antonio; Lebreton, Yveline; Matthews, Jaymie; Nardetto, Nicolas; do Nascimento, Jose D.; Pereira, Filipe; Rodríguez Díaz, Luisa F.; Serenelli, Aldo M.; Spitoni, Emanuele; Stonkutė, Edita; Suárez, Juan Carlos; Szabó, Robert; Van Eylen, Vincent; Ventura, Rita; Verma, Kuldeep; Weiss, Achim; Wu, Tao; Barclay, Thomas; Christensen-Dalsgaard, Jørgen; Jenkins, Jon M.; Kjeldsen, Hans; Ricker, George R; Seager, Sara; Vanderspek, Roland K; ... Show more Show less
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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.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences; Massachusetts Institute of Technology. Department of Aeronautics and Astronautics; MIT Kavli Institute for Astrophysics and Space Research
Astrophysical Journal Letters
American Astronomical Society
Aguirre, Víctor Silva, et al. "Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite." The Astrophysical Journal Letters, 889, 2 (February 2020).© 2020 The American Astronomical Society.
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