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Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U~Gru

Autor: C. Johnston, A. Tkachenko, T. Van Reeth, D. M. Bowman, K. Pavlovski, H. Sana, S. Sekaran

Publikováno v: Astronomy & Astrophysics, 670, pp. 1-13
Astronomy & Astrophysics, 670, 1-13

Context. Unambiguous examples of the influence of tides on self-excited, free stellar pulsations have recently been observationally detected in space-based photometric data. Aims. We aim to investigate U Gru and contextualise it within the growing cl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d32bea3cddb4f4e4fafa4efd1e296bb
http://arxiv.org/abs/2210.06491

The near-core rotation of HD 112429. A γ Doradus star with TESS photometry and legacy spectroscopy

Autor: T. Van Reeth, P. De Cat, J. Van Beeck, V. Prat, D. J. Wright, H. Lehmann, A.-N. Chené, E. Kambe, S. L. S. Yang, G. Gentile, M. Joos

The TESS space mission provides us with high-precision photometric observations of bright stars over more than 70% of the entire sky, allowing us to revisit and characterise well-known stars. We aim to conduct an asteroseismic analysis of the gamma D

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::166e7d459a82271df4959a4d2bca8afc
https://resolver.caltech.edu/CaltechAUTHORS:20220614-222204000

Detection of period-spacing patterns due to the gravity modes of rotating dwarfs in the TESS southern continuous viewing zone

Autor: S. Garcia, T. Van Reeth, J. De Ridder, A. Tkachenko, L. IJspeert, C. Aerts

Publikováno v: Astronomy & Astrophysics, 662, pp. 1-15
Astronomy & Astrophysics, 662, 1-15

Context: the theory of stellar evolution presents shortcomings when confronted with asteroseismic probes of interior physical properties. The differences between observations and theory are often great because stellar models have mainly been calibrat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6a3753fc5169b1a4f778378b390fcca
https://doi.org/10.1051/0004-6361/202141926

The traditional approximation of rotation for rapidly rotating stars and planets: II. Deformation and differential rotation

Autor: Vincent Prat, Hachem Dhouib, T. Van Reeth, Stéphane Mathis

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2021, 656, pp.A122. ⟨10.1051/0004-6361/202141152⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 656, pp.A122. ⟨10.1051/0004-6361/202141152⟩

We examine the dynamics of low-frequency gravito-inertial waves (GIWs) in differentially rotating deformed radiation zones in stars and planets by generalising the traditional approximation of rotation (TAR). The TAR treatment was built on the assump

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9088eb601dc32fb277627d806b24ede
https://hal-cea.archives-ouvertes.fr/cea-03475470/document