Zobrazeno 1 - 10
of 397
pro vyhledávání: '"Gaidos E"'
Autor:
Donati, J. -F., Cristofari, P. I., Alencar, S. H. P., Kóspál, Á., Bouvier, J., Moutou, C., Carmona, A., Gregorio-Hetem, J., Manara, C. F., Artigau, E., Doyon, R., Takami, M., Shang, H., Nascimento, J. Dias do, Ménard, F., Gaidos, E., team, the SPIRou science
This paper presents near-infrared spectropolarimetric and velocimetric observations of the young planet-hosting T Tauri star PDS 70, collected with SPIRou at the 3.6m Canada-France-Hawaii Telescope from 2020 to 2024. Clear Zeeman signatures from magn
Externí odkaz:
http://arxiv.org/abs/2411.03089
Autor:
Gaidos, E., Parviainen, H., Esparza-Borges, E., Fukui, A., Isogai, K., Kawauchi, K., de Leon, J., Mori, M., Murgas, F., Narita, N., Palle, E., Watanabe, N.
Publikováno v:
A&A 688, L34 (2024)
Context: Rocky planets on ultra-short period orbits can have surface magma oceans and rock-vapour atmospheres in which dust can condense. Observations of that dust can inform about the composition surface conditions on these objects. Aims: We constra
Externí odkaz:
http://arxiv.org/abs/2407.17372
Autor:
Almenara, J. M., Bonfils, X., Bryant, E. M., Jordán, A., Hébrard, G., Martioli, E., Correia, A. C. M., Astudillo-Defru, N., Cadieux, C., Arnold, L., Artigau, É., Bakos, G. Á., Barros, S. C. C., Bayliss, D., Bouchy, F., Boué, G., Brahm, R., Carmona, A., Charbonneau, D., Ciardi, D. R., Cloutier, R., Cointepas, M., Cook, N. J., Cowan, N. B., Delfosse, X., Nascimento, J. Dias do, Donati, J. -F., Doyon, R., Forveille, T., Fouqué, P., Gaidos, E., Gilbert, E. A., da Silva, J. Gomes, Hartman, J. D., Hesse, K., Hobson, M. J., Jenkins, J. M., Kiefer, F., Kostov, V. B., Laskar, J., Lendl, M., L'Heureux, A., Martins, J. H. C., Menou, K., Moutou, C., Murgas, F., Polanski, A. S., Rapetti, D., Sedaghati, E., Shang, H.
We report the discovery and characterisation of a giant transiting planet orbiting a nearby M3.5V dwarf (d = 80.4 pc, $G$ = 15.1 mag, $K$=11.2 mag, R$_\star$ = 0.358 $\pm$ 0.015 R$_\odot$, M$_\star$ = 0.340 $\pm$ 0.009 M$_\odot$). Using the photometr
Externí odkaz:
http://arxiv.org/abs/2308.01454
Autor:
Allart, R., Lemée-Joliecoeur, P. -B., Jaziri, A. Y., Lafrenière, D., Artigau, E., Cook, N., Darveau-Bernier, A., Dang, L., Cadieux, C., Boucher, A., Bourrier, V., Deibert, E. K., Pelletier, S., Radica, M., Benneke, B., Carmona, A., Cloutier, R., Cowan, N. B., Delfosse, X., Donati, J. -F., Doyon, R., Figueira, P., Forveille, T., Fouqué, P., Gaidos, E., Gu, P. -G., Hébrard, G., Kiefer, F., Kóspál, Á, Jayawardhana, R., Martioli, E., Santos, L. A. Dos, Turner, H. Shang J. D., Vidotto, A.
Publikováno v:
A&A 677, A164 (2023)
The metastable helium triplet in the near-infrared (10833{\AA}) is among the most important probes of exoplanet atmospheres. It can trace their extended outer layers and constrain mass-loss. We use the near-infrared high-resolution spectropolarimeter
Externí odkaz:
http://arxiv.org/abs/2307.05580
Publikováno v:
A&A 675, A179 (2023)
We investigate the influence of an accretion disk on the angular momentum (AM) evolution of young M dwarfs, which parameters govern the AM distribution after the disk phase, and whether this leads to a mass-independent distribution of SAM. We find th
Externí odkaz:
http://arxiv.org/abs/2306.02657
Autor:
Donati, J. -F., Cristofari, P. I., Finociety, B., Klein, B., Moutou, C., Gaidos, E., Cadieux, C., Artigau, E., Correia, A. C. M., Boué, G., Cook, N. J., Carmona, A., Lehmann, L. T., Bouvier, J., Martioli, E., Morin, J., Fouqué, P., Delfosse, X., Royon, R., Hébrard, G., Alencar, S. H. P., Laskar, J., Arnold, L., Petit, P., Kospal, A., Vidotto, A., Folsom, C. P., collaboration, the SLS
In this paper we present an analysis of near-infrared spectropolarimetric and velocimetric data of the young M dwarf AU Mic, collected with SPIRou at the Canada-France-Hawaii telescope from 2019 to 2022, mostly within the SPIRou Legacy Survey. With t
Externí odkaz:
http://arxiv.org/abs/2304.09642
Autor:
Fouqué, P., Martioli, E., Donati, J. -F., Lehmann, L. T., Zaire, B., Bellotti, S., Gaidos, E., Morin, J., Moutou, C., Petit, P., Alencar, S. H. P., Arnold, L., Artigau, É., Cang, T. -Q., Carmona, A., Cook, N. J., Cortés-Zuleta, P., Cristofari, P. I., Delfosse, X., Doyon, R., Hébrard, G., Malo, L., Reylé, C., Usher, C.
Publikováno v:
A&A 672, A52 (2023)
Context. The rotation period of stars is an important parameter along with mass, radius, effective temperature. It is an essential parameter for any radial velocity monitoring, as stellar activity can mimic the presence of a planet at the stellar rot
Externí odkaz:
http://arxiv.org/abs/2302.03377
Autor:
Kiefer, F., Hébrard, G., Martioli, E., Artigau, E., Doyon, R., Donati, J. -F., Cadieux, C., Carmona, A., Ciardi, D. R., Cristofari, P. I., de Almeida, L., Figueira, P., Gaidos, E., Gonzales, E., Lecavelier, A., Stassun, K. G., Arnold, L., Benneke, B., Boisse, I., Bonfils, X., Cook, N. J., Cortés-Zuleta, P., Delfosse, X., Nascimento, J. Dias do, Fausnaugh, M., Fong, W., Fouqué, P., Forveille, T., da Silva, J. Gomes, Hesse, K., Kóspál, Á., Lewis, H., Liu, C. -F., Martins, J. H. C., Paegert, M., Seager, S., Shang, H., Twicken, J. D., Vandal, T., Vinatier, S., Widemann, T., Winn, J. N.
Publikováno v:
A&A 670, A136 (2023)
TOI-1695 is a V-mag=13 M-dwarf star from the northern hemisphere at 45$\,$pc from the Sun, around which a 3.134-day periodic transit signal from a super-Earth candidate was identified in TESS photometry. With a transit depth of 1.3$\,$mmag, the radiu
Externí odkaz:
http://arxiv.org/abs/2211.06205
Autor:
Cristofari, P. I., Donati, J. -F., Masseron, T., Fouqué, P., Moutou, C., Carmona, A., Artigau, E., Martioli, E., Hébrard, G., Gaidos, E., Delfosse, X.
We describe advances on a method designed to derive accurate parameters of M dwarfs. Our analysis consists in comparing high-resolution infrared spectra acquired with the near-infrared spectro-polarimeter SPIRou to synthetic spectra computed from MAR
Externí odkaz:
http://arxiv.org/abs/2208.10340
Autor:
Cristofari, P. I., Donati, J. -F., Masseron, T., Fouqué, P., Moutou, C., Delfosse, X., Artigau, E., Folsom, C. P., Carmona, A., Gaidos, E., Nascimento Jr., J. -D. do, Jahandar, F., Hébrard, G.
We present the results of a study aiming at retrieving the fundamental parameters of M dwarfs from spectra secured with SPIRou, the near-infrared high-resolution spectropolarimeter installed at the Canada-France-Hawaii Telescope (CFHT), in the framew
Externí odkaz:
http://arxiv.org/abs/2112.08118