Zobrazeno 1 - 10
of 5 731
pro vyhledávání: '"Fouque, A."'
Autor:
Cortes-Zuleta, P., Boisse, I., Ould-Elhkim, M., Wilson, T. G., Larue, P., Carmona, A., Delfosse, X., Donati, J. -F., Forveille, T., Moutou, C., Cameron, A. Collier, Artigau, E., Acuña, L., Altinier, L., Astudillo-Defru, N., Baruteau, C., Bonfils, X., Cabrit, S., Cadieux, C., Cook, N. J., Decocq, E., Diaz, R. F., Fouque, P., da Silva, J. Gomes, Grankin, K., Grouffal, S., Hara, N., Hebrard, G., Heidari, N., Martins, J. H. C., Martioli, E., Maurice, M., Scigliuto, J., Bell, J. Serrano, Sulis, S., Petit, A. C., Vivien, H. G.
We report the discovery of a super-Earth candidate orbiting the nearby mid M dwarf Gl\,725A using the radial velocity (RV) method. The planetary signal has been independently identified using high-precision RVs from the SOPHIE and SPIRou spectrograph
Externí odkaz:
http://arxiv.org/abs/2411.09506
Autor:
Artigau, Étienne, Cadieux, Charles, Cook, Neil J., Doyon, René, Dauplaise, Laurie, Arnold, Luc, Cadieux, Maya, Donati, Jean-François, Cristofari, Paul, Delfosse, Xavier, Fouqué, Pascal, Moutou, Claire, Larue, Pierre, Allart, Romain
The detection of stellar variability often relies on the measurement of selected activity indicators such as coronal emission lines and non-thermal emissions. On the flip side, the effective stellar temperature is normally seen as one of the key fund
Externí odkaz:
http://arxiv.org/abs/2409.07260
We analyze both finite and infinite systems of Riccati equations derived from stochastic differential games on infinite networks. We discuss a connection to the Catalan numbers and the convergence of the Catalan functions by Fourier transforms.
Externí odkaz:
http://arxiv.org/abs/2408.09079
Autor:
Zaire, B., Donati, J. -F., Alencar, S. P., Bouvier, J., Moutou, C., Bellotti, S., Carmona, A., Petit, P., Kóspál, Á., Shang, H., Grankin, K., Manara, C., Alecian, E., Gregory, S. P., Fouqué, P., consortium, the SLS
This paper analyses spectropolarimetric observations of the classical T Tauri star (CTTS) GM Aurigae collected with SPIRou, the near-infrared spectropolarimeter at the Canada-France-Hawaii Telescope, as part of the SLS and SPICE Large Programs. We re
Externí odkaz:
http://arxiv.org/abs/2408.05864
Mean Field Control Games (MFCG), introduced in [Angiuli et al., 2022a], represent competitive games between a large number of large collaborative groups of agents in the infinite limit of number and size of groups. In this paper, we prove the converg
Externí odkaz:
http://arxiv.org/abs/2405.17017
Autor:
Bellotti, S., Morin, J., Lehmann, L. T., Petit, P., Hussain, G. A. J., Donati, J. -F., Folsom, C. P., Carmona, A., Martioli, E., Klein, B., Fouque, P., Moutou, C., Alencar, S., Artigau, E., Boisse, I., Bouchy, F., Bouvier, J., Cook, N. J., Delfosse, X., Doyon, R., Hebrard, G.
Dynamo models of stellar magnetic fields for partly and fully convective stars are guided by observational constraints. Zeeman-Doppler imaging has revealed a variety of magnetic field geometries and, for fully convective stars in particular, a dichot
Externí odkaz:
http://arxiv.org/abs/2403.08590
Autor:
Donati, J. -F., Finociety, B., Cristofari, P. I., Alencar, S. H. P., Moutou, C., Delfosse, X., Fouqué, P, Arnold, L., Baruteau, C., Kóspál, Á., Ménard, F., Carmona, A., Grankin, K., Takami, M., Artigau, E., Doyon, R., Hébrard, G., collaboration, the SLS
We report new observations of the classical T~Tauri star CI~Tau with the SPIRou near-infrared spectropolarimeter and velocimeter at the Canada-France-Hawaii Telescope (CFHT) in late 2019, 2020 and 2022, complemented with observations obtained with th
Externí odkaz:
http://arxiv.org/abs/2403.02166
We establish the convergence of the unified two-timescale Reinforcement Learning (RL) algorithm presented in a previous work by Angiuli et al. This algorithm provides solutions to Mean Field Game (MFG) or Mean Field Control (MFC) problems depending o
Externí odkaz:
http://arxiv.org/abs/2312.06659
Autor:
Lehmann, L. T., Donati, J. -F., Fouque, P., Moutou, C., Bellotti, S., Delfosse, X., Petit, P., Carmona, A., Morin, J., Vidotto, A. A., consortium, the SLS
In this paper, we study six slowly rotating mid-to-late M~dwarfs (rotation period $P_{\mathrm{rot}} \approx 40-190\,\mathrm{dy}$) by analysing spectropolarimetric data collected with SPIRou at the Canada-France-Hawaii Telescope as part of the SPIRou
Externí odkaz:
http://arxiv.org/abs/2311.05039
Autor:
Jahandar, Farbod, Doyon, René, Artigau, Étienne, Cook, Neil J., Cadieux, Charles, Lafrenière, David, Forveille, Thierry, Donati, Jean-François, Fouqué, Pascal, Carmona, Andrés, Cloutier, Ryan, Cristofari, Paul, Gaidos, Eric, da Silva, João Gomes, Malo, Lison, Martioli, Eder, Nascimento Jr., J. -D. do, Pelletier, Stefan, Vandal, Thomas, Venn, Kim
Determination of fundamental parameters of stars impacts all fields of astrophysics, from galaxy evolution to constraining the internal structure of exoplanets. This paper presents a detailed spectroscopic analysis of Barnard's star that compares an
Externí odkaz:
http://arxiv.org/abs/2310.12125