The first view of δ Scuti and γ Doradus stars with the TESS mission
Article
Article Title | The first view of δ Scuti and γ Doradus stars with the TESS mission |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Antoci, V. (Author), Cunha, M. S. (Author), Bowman, D. M. (Author), Murphy, S. J. (Author), Kurtz, D. W. (Author), Bedding, T. R. (Author), Borre, C. C. (Author), Christophe, S. (Author), Daszynska-Daszkiewicz, J. (Author), Fox-Machado, L. (Author), Garcia Hernandez, A. (Author), Ghasemi, H. (Author), Handberg, R. (Author), Hansen, H. (Author), Hasanzadeh, A. (Author), Houdek, G. (Author), Johnston, C. (Author), Justesen, A. B. (Author), Alicavus, F. Kahraman (Author), Kotysz, K. (Author), Latham, D. (Author), Matthews, J. M. (Author), Monster, J. (Author), Niemczura, E. (Author), Paunzen, E. (Author), Sanchez Arias, J. P. (Author), Pigulski, A. (Author), Pepper, J. (Author), Richey-Yowell, T. (Author), Safari, H. (Author), Seager, S. (Author), Smalley, B. (Author), Shutt, T. (Author), Sodor, A. (Author), Suarez, J. C. (Author), Tkachenko, A. (Author), Wu, T. (Author), Zwintz, K. (Author), Forteza, S. Barcelo (Author), Brunsden, E. (Author), Bognar, Z. (Author), Buzasi, D. L. (Author), Chowdhury, S. (Author), De Cat, P. (Author), Evans, J. A. (Author), Guo, Z. (Author), Guzik, J. A. (Author), Jevtic, N. (Author), Lampens, P. (Author), Lares-Martiz, M. (Author), Lovekin, C. (Author), Li, G. (Author), Mirouh, G. M. (Author), Mkrtichian, D. (Author), Monteiro, M. J. P. F. G. (Author), Nemec, J. M. (Author), Ouazzani, R. M. (Author), Pascual-Granado, J. (Author), Reese, D. R. (Author), Rieutord, M. (Author), Rodon, J. R. (Author), Skarka, M. (Author), Sowicka, P. (Author), Stateva, I. (Author), Szabo, R. (Author) and Weiss, W. W. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 490 (3), pp. 4040-4059 |
Number of Pages | 20 |
Year | 2019 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stz2787 |
Web Address (URL) | https://academic.oup.com/mnras/article/490/3/4040/5583021 |
Abstract | We present the first asteroseismic results for δ Scuti and γ Doradus stars observed in Sectors 1 and 2 of the TESS mission. We utilize the 2-min cadence TESS data for a sample of 117 stars to classify their behaviour regarding variability and place them in the Hertzsprung–Russell diagram using Gaia DR2 data. Included within our sample are the eponymous members of two pulsator classes, γ Doradus and SX Phoenicis. Our sample of pulsating intermediate-mass stars observed by TESS also allows us to confront theoretical models of pulsation driving in the classical instability strip for the first time and show that mixing processes in the outer envelope play an important role. We derive an empirical estimate of 74 per cent for the relative amplitude suppression factor as a result of the redder TESS passband compared to the Kepler mission using a pulsating eclipsing binary system. Furthermore, our sample contains many high-frequency pulsators, allowing us to probe the frequency variability of hot young δ Scuti stars, which were lacking in the Kepler mission data set, and identify promising targets for future asteroseismic modelling. The TESS data also allow us to refine the stellar parameters of SX Phoenicis, which is believed to be a blue straggler. |
Keywords | asteroseismology; techniques: photometric; stars: chemically peculiar; stars: interiors; stars: variables: δ Scuti; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Stellar Astrophysics Centre, Denmark |
University of Porto, Portugal | |
Catholic University of Leuven, Belgium | |
University of Central Lancashire, United Kingdom | |
Sorbonne University, France | |
University of Wroclaw, Poland | |
National Autonomous University of Mexico, Mexico | |
University of Granada, Spain | |
Institute for Advanced Studies in Basic Sciences, Iran | |
Aarhus University, Denmark | |
University of Zanjan, Iran | |
Nicolaus Copernicus Astronomical Center, Poland | |
Wroclaw University, Poland | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of British Columbia, Canada | |
Masaryk University, Czech Republic | |
Astrophysics Institute of La Plata, Argentina | |
Lehigh University, United States | |
Massachusetts Institute of Technology, United States | |
Keele University, United Kingdom | |
University of York, United Kingdom | |
Konkoly Observatory, Hungary | |
Chinese Academy of Sciences, China | |
University of Innsbruck, Austria | |
Astrobiology Center, Spain | |
Florida Gulf Coast University, United States | |
Polish Academy of Sciences, Poland | |
Royal Observatory of Belgium | |
Los Alamos National Laboratory, United States | |
Bloomsburg University, United States | |
Institute of Astrophysics of Andalusia, Spain | |
Mount Allison University, Canada | |
University of Sydney | |
University of Surrey, United Kingdom | |
National Astronomical Research Institute of Thailand, Thailand | |
Camosun College, Canada | |
University of Toulouse, France | |
Bulgarian Academy of Sciences, Bulgaria | |
University of Vienna, Austria | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q736y/the-first-view-of-scuti-and-doradus-stars-with-the-tess-mission
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