Search Results - "Lebre, Agnès"

Surface magnetism in the pulsating RV Tauri star R Scuti by Georgiev, Stefan, Lèbre, Agnès, Josselin, Eric, Mathias, Philippe, Konstantinova-Antova, Renada, Sabin, Laurence

“…ABSTRACT We present the surface magnetic field conditions of the brightest pulsating RV Tauri star, R Sct. Our investigation is based on the longest…”
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Determining rotational and macroturbulent velocities of cool magnetic giant stars by Georgiev, Stefan, Lèbre, Agnès, Josselin, Eric, Konstantinova‐Antova, Renada, Morin, Julien

“…An original method of estimating the projected rotational velocity, vsini, and the macroturbulent velocity, vmac, of evolved M giant stars is presented. It is…”
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The evolution of surface magnetic fields in young solar-type stars II: the early main sequence (250–650 Myr) by Folsom, C P, Bouvier, J, Petit, P, Lèbre, A, Amard, L, Palacios, A, Morin, J, Donati, J-F, Vidotto, A A

“…Abstract There is a large change in surface rotation rates of sun-like stars on the pre-main sequence and early main sequence. Since these stars have…”
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First detection of surface magnetic fields in post-AGB stars: the cases of U Monocerotis and R Scuti by Sabin, L., Wade, G. A., Lèbre, A.

“…While several observational investigations have revealed the presence of magnetic fields in the circumstellar envelopes, jets and outflows of post-asymptotic…”
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The evolution of surface magnetic fields in young solar-type stars – I. The first 250 Myr by Folsom, C. P., Petit, P., Bouvier, J., Lèbre, A., Amard, L., Palacios, A., Morin, J., Donati, J.-F., Jeffers, S. V., Marsden, S. C., Vidotto, A. A.

“…The surface rotation rates of young solar-type stars vary rapidly with age from the end of the pre-main sequence through the early main sequence. Important…”
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The origins of the magnetic field in tip-RGB, AGB and post-AGB stars by Konstantinova-Antova, Renada, Georgiev, Stefan, Lèbre, Agnès, Charbonnel, Corinne, Palacios, Ana, Aurière, Michel

“…During the last decade and a half, the new generation spectropolarimeter Narval at Pic du Midi, France allowed the study of weak magnetic fields in cool giant…”
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Surface magnetism in the pulsating RV Tauri star R Scuti by Georgiev, Stefan, Lèbre, Agnès, Josselin, Eric, Mathias, Philippe, Konstantinova-Antova, Renada, Sabin, Laurence

“…Monthly Notices of the Royal Astronomical Society, Volume 522, Issue 3, July 2023, Pages 3861-3876 We present the surface magnetic field conditions of the…”
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Science cases for a visible interferometer by Stee, Philippe, Allard, France, Benisty, Myriam, Bigot, Lionel, Blind, Nicolas, Boffin, Henri, Fernandes, Marcelo Borges, Carciofi, Alex, Chiavassa, Andrea, Creevey, Orlagh, Cruzalebes, Pierre, de Wit, Willem-Jan, de Souza, Armando Domiciano, Elvis, Martin, Fabas, Nicolas, Faes, Daniel, Gallenne, Alexandre, Pena, Carlos Guerrero, Hillen, Michel, Hoenig, Sebastian, Ireland, Michael, Kervella, Pierre, Kishimoto, Makoto, Kostogryz, Nadia, Kraus, Stefan, Labeyrie, Antoine, Bouquin, Jean-Baptiste Le, Lebre, Agnès, Ligi, Roxanne, Marconi, Alessandro, Marsh, Thomas, Meilland, Anthony, Millour, Florentin, Monnier, John, Mourard, Denis, Nardetto, Nicolas, Ohnaka, Keiichi, Paladini, Claudia, Perraut, Karine, Perrin, Guy, Petit, Pascal, Petrov, Romain, Rakshit, Suvendu, Schaefer, Gail, Schneider, Jean, Shulyak, Denis, Simon, Michal, Soulez, Ferreol, Steeghs, Danny, Tallon-Bosc, Isabelle, Tallon, Michel, Brummelaar, Theo ten, Thiebaut, Eric, Thévenin, Frédéric, Van Winckel, Hans, Wittkowski, Markus, Zorec, Juan

“…High spatial resolution is the key for the understanding various astrophysical phenomena. But even with the future E-ELT, single dish instruments are limited…”
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Determining rotational and macroturbulent velocities of cool magnetic giant stars by Georgiev, Stefan, Lèbre, Agnès, Josselin, Eric, Konstantinova-Antova, Renada, Morin, Julien

“…Astronomische Nachrichten, 2020, Volume 341, Issue 5, pp. 486-492 An original method of estimating the projected rotational velocity, $vsini$, and the…”
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Measuring surface magnetic fields of red supergiant stars by Tessore, Benjamin, Lèbre, Agnès, Morin, Julien, Mathias, Philippe, Josselin, Eric, Aurière, Michel

“…A&A 603, A129 (2017) RSG stars are very massive cool evolved stars. Recently, a weak magnetic field was measured at the surface of $\alpha$ Ori and this is so…”
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Detection of the linearly polarised spectrum of the red supergiant star alpha Ori by Tessore, Benjamin, Lòpez-Ariste, Arturo, Mathias, Philippe, Lèbre, Agnès, Morin, Julien, Josselin, Eric

“…In the solar limb, linear polarisation is due to anisotropy of the radiation field induced by limb darkening. It is maximal when it is seen parallel to the…”
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Shock-Induced Polarized Hydrogen Emission Lines in the Mira Star omicron Ceti by Fabas, Nicolas, Lèbre, Agnès, Gillet, Denis

“…In the spectra of pulsating stars, especially Mira stars, the detection of intense hydrogen emission lines has been explained by a radiative shock wave,…”
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Stellar Physics with High-Resolution UV Spectropolarimetry by Morin, Julien, Bouret, Jean-Claude, Neiner, Coralie, Aerts, Conny, Bagnulo, Stefano, Catala, Claude, Charbonnel, Corinne, Evans, Chris, Fossati, Luca, Garcia, Miriam, de Castro, Ana I Gómez, Herrero, Artemio, Hussain, Gaitee, Kaper, Lex, Kochukhov, Oleg, Konstantinova-Antova, Renada, de Koter, Alex, Kraus, Michaela, Jiří\K{r}tička, Lèbre, Agnes, Lueftinger, Theresa, Meynet, Georges, Petit, Pascal, Shore, Steve, Solanki, Sami, Stelzer, Beate, Strugarek, Antoine, Vidotto, Aline, Vink, Jorick S

“…Current burning issues in stellar physics, for both hot and cool stars, concern their magnetism. In hot stars, stable magnetic fields of fossil origin impact…”
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