2019
The first view of delta Scuti and gamma Doradus stars with the TESS mission
ANTOCI, V.; M.S. CUNHA; D.M. BOWMAN; S.J. MURPHY; D.W. KURTZ et. al.Basic information
Original name
The first view of delta Scuti and gamma Doradus stars with the TESS mission
Authors
ANTOCI, V.; M.S. CUNHA; D.M. BOWMAN; S.J. MURPHY; D.W. KURTZ; T.R. BEDDING; C.C. BORRE; S. CHRISTOPHE; J. DASZYNSKA-DASZKIEWICZ; L. FOX-MACHADO; A.G. HERNANDEZ; H. GHASEMI; R. HANDBERG; H. HANSEN; A. HASANZADEH; G. HOUDEK; C. JOHNSTON; A.B. JUSTESEN; F.K. ALICAVUS; K. KOTYSZ; D. LATHAM; J.M. MATTHEWS; J. MONSTER; E. NIEMCZURA; Ernst PAUNZEN (40 Austria, belonging to the institution); J.P.S. ARIAS; A. PIGULSKI; J. PEPPER; T. RICHEY-YOWELL; H. SAFARI; S. SEAGER; B. SMALLEY; T. SHUTT; A. SODOR; J.C. SUAREZ; A. TKACHENKO; T. WU; K. ZWINTZ; S.B. FORTEZA; E. BRUNSDEN; Z. BOGNAR; D.L. BUZASI; S. CHOWDHURY; Cat P. DE; J.A. EVANS; Z. GUO; J.A. GUZIK; N. JEVTIC; P. LAMPENS; M.L. MARTIZ; C. LOVEKIN; G. LI; G.M. MIROUH; D. MKRTICHIAN; M. J. P. F. G. MONTEIRO; J.M. NEMEC; R.M. OUAZZANI; J. PASCUAL-GRANADO; D.R. REESE; M. RIEUTORD; J.R. RODON; Marek SKARKA (203 Czech Republic, belonging to the institution); P. SOWICKA; I. STATEVA; R. SZABO and W.W. WEISS
Edition
Monthly Notices of the Royal Astronomical Society, MALDEN, WILEY, 2019, 0035-8711
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 5.357
RIV identification code
RIV/00216224:14310/19:00113426
Organization unit
Faculty of Science
UT WoS
000503993100070
EID Scopus
2-s2.0-85079595712
Keywords in English
asteroseismology; techniques: photometric; stars: chemically peculiar; stars: interiors; stars: variables: delta Scuti
Tags
Tags
International impact, Reviewed
Changed: 31/3/2020 21:01, Mgr. Marie Novosadová Šípková, DiS.
Abstract
In the original language
We present the first asteroseismic results for delta Scuti and gamma 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, gamma 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 d 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.
Links
EF16_027/0008360, research and development project |
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