Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Laurent Gizon"'
Autor:
Timothy R. Bedding, Daniel Huber, Jie Yu, Shourya Khanna, Dennis Stello, Shaolan Bi, S. Hekker, Laurent Gizon
Publikováno v:
Yu, J, Hekker, S, Bedding, T R, Stello, D, Huber, D, Gizon, L, Khanna, S & Bi, S 2021, ' Asteroseismology of luminous red giants with Kepler-II. Dependence of mass-loss on pulsations and radiation ', Monthly Notices of the Royal Astronomical Society, vol. 501, no. 4, pp. 5135-5148 . https://doi.org/10.1093/mnras/staa3970
Monthly Notices of the Royal Astronomical Society, 501, 5135-5148. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 501, 5135-5148. Oxford University Press
Mass loss by red giants is an important process to understand the final stages of stellar evolution and the chemical enrichment of the interstellar medium. Mass-loss rates are thought to be controlled by pulsation-enhanced dust-driven outflows. Here
Autor:
V. Granata, Valerio Nascimbeni, Giampaolo Piotto, Ana M. Heras, Martin Pertenais, Magali Deleuil, Serena Benatti, Riccardo Claudi, Anko Börner, Don Pollacco, M. Fabrizio, Demetrio Magrin, E. Alei, M. Montalto, L. Prisinzano, Carsten Paproth, Roberto Ragazzoni, Silvano Desidera, Isabella Pagano, Marie-Jo Goupil, J. M. Mas-Hesse, Stéphane Udry, G. Altavilla, Laurent Gizon, Conny Aerts, P. M. Marrese, Sergio Ortolani, S. Marinoni, Juan Cabrera, Luca Malavolta, Heike Rauer, G. Ramsay
Publikováno v:
Astronomy & Astrophysics, 653, 1-23
Astronomy & Astrophysics, 653, pp. 1-23
Astronomy & Astrophysics, 653, pp. 1-23
Context. The ESA PLAnetary Transits and Oscillations of stars (PLATO) mission will search for terrestrial planets in the habitable zone of solar-type stars. Because of telemetry limitations, PLATO targets need to be pre-selected. Aims. In this paper,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8191f043fd23fa5f013596e288dd2055
http://arxiv.org/abs/2108.13712
http://arxiv.org/abs/2108.13712
Geological evidence suggests liquid water near the Earth's surface as early as 4.4 billion years ago when the faint young Sun only radiated about 70% of its modern power output. At this point, the Earth should have been a global snowball if it posses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c0a107dc718140b990dbbee2246306c
http://arxiv.org/abs/2007.03423
http://arxiv.org/abs/2007.03423
Autor:
Chen Jiang, Laurent Gizon
Publikováno v:
Research in Astronomy and Astrophysics. 21:226
Asteroseismic observations are crucial to constrain stellar models with precision. Bayesian Estimation of STellar Parameters (BESTP) is a tool that utilizes Bayesian statistics and nested sampling Monte Carlo algorithm to search for the stellar model
Autor:
Martin Bo Nielsen, Laurent Gizon, Othman Benomar, Hideyuki Hotta, Masao Takata, Takashi Sekii, Shravan M. Hanasoge, Jørgen Christensen-Dalsgaard, M. Bazot, Katepalli R. Sreenivasan
Publikováno v:
Benomar, O, Bazot, M, Nielsen, M B, Gizon, L, Sekii, T, Takata, M, Hotta, H, Hanasoge, S, Sreenivasan, K R & Christensen-Dalsgaard, J 2018, ' Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars ', Science, vol. 361, no. 6408, pp. 1231-+ . https://doi.org/10.1126/science.aao6571
The differentially rotating outer layers of stars are thought to play a role in driving their magnetic activity, but the underlying mechanisms that generate and sustain differential rotation are poorly understood. We report the measurement of latitud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a62763cedd7722281de2ecd5c2cf552a
https://pure.au.dk/portal/da/publications/asteroseismic-detection-of-latitudinal-differential-rotation-in-13-sunlike-stars(86d5de95-7291-40e9-b32f-239b4b1f74f8).html
https://pure.au.dk/portal/da/publications/asteroseismic-detection-of-latitudinal-differential-rotation-in-13-sunlike-stars(86d5de95-7291-40e9-b32f-239b4b1f74f8).html
Autor:
Laurent Gizon, Katepalli R. Sreenivasan, M. Bazot, Pascal Petit, Jørgen Christensen-Dalsgaard, Timothy R. White, David Mary, Martin Bo Nielsen, Othman Benomar
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2018, 619, ⟨10.1051/0004-6361/201834251⟩
Bazot, M, Nielsen, M B, Mary, D, Christensen-Dalsgaard, J, Benomar, O, Petit, P, Gizon, L, Sreenivasan, K R & White, T R 2018, ' Butterfly diagram of a Sun-like star observed using asteroseismology ', Astronomy & Astrophysics, vol. 619, 9 . https://doi.org/10.1051/0004-6361/201834251
Astronomy and Astrophysics-A&A, 2018, 619, ⟨10.1051/0004-6361/201834251⟩
Bazot, M, Nielsen, M B, Mary, D, Christensen-Dalsgaard, J, Benomar, O, Petit, P, Gizon, L, Sreenivasan, K R & White, T R 2018, ' Butterfly diagram of a Sun-like star observed using asteroseismology ', Astronomy & Astrophysics, vol. 619, 9 . https://doi.org/10.1051/0004-6361/201834251
Stellar magnetic fields are poorly understood but are known to be important for stellar evolution and exoplanet habitability. They drive stellar activity, which is the main observational constraint on theoretical models for magnetic field generation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ac40d4391ae1d29a424036345ec8526
https://hal-insu.archives-ouvertes.fr/insu-03678166
https://hal-insu.archives-ouvertes.fr/insu-03678166
Autor:
Timothy R. Bedding, T. Stahn, H. M. Antia, Yvonne Elsworth, J. P. Marques, Daniel Huber, Amy McQuillan, Michael Bazot, Travis S. Metcalfe, C. Régulo, Guy R. Davies, Jørgen Christensen-Dalsgaard, T. Appourchaux, Timothy R. White, Warrick H. Ball, Savita Mathur, V. Silva Aguirre, Dennis Stello, Rachel Howe, Laurent Gizon, O. L. Creevey, Patrick Gaulme, Rasmus Handberg, Saskia Hekker, Martin Bo Nielsen, Christoffer Karoff, Benoit Mosser, Suzanne Aigrain, Günter Houdek, William J. Chaplin, Tiago L. Campante, Rafael A. García, David Salabert, Othman Benomar
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2017, 601, pp.A82. ⟨10.1051/0004-6361/201628706⟩
NASA Astrophysics Data System
Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 601, pp.A82. ⟨10.1051/0004-6361/201628706⟩
White, T R, Benomar, O, Silva Aguirre, V, Ball, W H, Bedding, T R, Chaplin, W J, Christensen-Dalsgaard, J, García, R A, Gizon, L, Stello, D, Aigrain, S, Antia, H M, Appourchaux, T, Bazot, M, Campante, T L, Creevey, O L, Davies, G R, Elsworth, Y P, Gaulme, P, Handberg, R, Hekker, S, Houdek, G, Howe, R, Huber, D, Karoff, C, Marques, J P, Mathur, S, McQuillan, A, Metcalfe, T S, Mosser, B, Nielsen, M B, Régulo, C, Salabert, D & Stahn, T 2017, ' Kepler Observations of the Asteroseismic Binary HD 176465 ', Astronomy & Astrophysics, vol. 601, A82 . https://doi.org/10.1051/0004-6361/201628706
Astronomy and Astrophysics-A&A, 2017, 601, pp.A82. ⟨10.1051/0004-6361/201628706⟩
NASA Astrophysics Data System
Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 601, pp.A82. ⟨10.1051/0004-6361/201628706⟩
White, T R, Benomar, O, Silva Aguirre, V, Ball, W H, Bedding, T R, Chaplin, W J, Christensen-Dalsgaard, J, García, R A, Gizon, L, Stello, D, Aigrain, S, Antia, H M, Appourchaux, T, Bazot, M, Campante, T L, Creevey, O L, Davies, G R, Elsworth, Y P, Gaulme, P, Handberg, R, Hekker, S, Houdek, G, Howe, R, Huber, D, Karoff, C, Marques, J P, Mathur, S, McQuillan, A, Metcalfe, T S, Mosser, B, Nielsen, M B, Régulo, C, Salabert, D & Stahn, T 2017, ' Kepler Observations of the Asteroseismic Binary HD 176465 ', Astronomy & Astrophysics, vol. 601, A82 . https://doi.org/10.1051/0004-6361/201628706
Binary star systems are important for understanding stellar structure and evolution, and are especially useful when oscillations can be detected and analysed with asteroseismology. However, only four systems are known in which solar-like oscillations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d3937a3bbbfe50b479f86f47d907704
https://hal-obspm.ccsd.cnrs.fr/obspm-02190189
https://hal-obspm.ccsd.cnrs.fr/obspm-02190189
Autor:
Laurent Gizon, Warrick H. Ball
Accurate modelling of solar-like oscillators requires that modelled mode frequencies are corrected for the systematic shift caused by improper modelling of the near-surface layers, known as the surface effect. ... We investigate how much additional u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7251c8346699637d941b80ec4b67a5
Publikováno v:
EPJ Web of Conferences, Vol 160, p 03006 (2017)
Bazot, M, Christensen-Dalsgaard, J, Benomar, O & Gizon, L 2017, ' A view into the core of α Cen A ', E P J Web of Conferences, vol. 160, 03006 . https://doi.org/10.1051/epjconf/201716003006
Bazot, M, Christensen-Dalsgaard, J, Benomar, O & Gizon, L 2017, ' A view into the core of α Cen A ', E P J Web of Conferences, vol. 160, 03006 . https://doi.org/10.1051/epjconf/201716003006
We present results of modelling of α Cen A. In order to estimate the physical parameters of this star, we modelled spectroscopic, interferometric, astrometric and asteroseismic data. To that effect we chose to use a Bayesian approach to parameter es
Publikováno v:
Bazot, M, Christensen-Dalsgaard, J, Gizon, L & Benomar, O 2016, ' On the uncertain nature of the core of α Cen A ', Monthly Notices of the Royal Astronomical Society, vol. 460, no. 2, pp. 1254-1269 . https://doi.org/10.1093/mnras/stw921
High-quality astrometric, spectroscopic, interferometric and, importantly, asteroseismic observations are available for $\alpha$ Cen A, which is the closest binary star system to earth. Taking all these constraints into account, we study the internal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::649359aee325a531d25d30d67e390da1
https://pure.au.dk/ws/files/121248920/On_the_uncertain_nature_of_the_core_of_Cen_A.pdf
https://pure.au.dk/ws/files/121248920/On_the_uncertain_nature_of_the_core_of_Cen_A.pdf