Zobrazeno 1 - 10
of 1 564
pro vyhledávání: '"(Breton, S"'
Magnetic cycles of solar-like stars influence their internal physics. Thus, the frequency, amplitude, excitation rate, and damping of the acoustic oscillation modes (p-modes) vary with the cycle over time. We need to understand the impact of magnetic
Externí odkaz:
http://arxiv.org/abs/2411.04850
Autor:
Breton, S. N., Lanza, A. F, Messina, S., Pagano, I., Bugnet, L., Corsaro, E., García, R. A., Mathur, S., Santos, A. R. G, Aigrain, S., Amard, L., Brun, A. S., Degott, L., Noraz, Q., Palakkatharappil, D. B., Panetier, E., Strugarek, A., Belkacem, K., Goupil, M. -J, Ouazzani, R. M., Philidet, J., Renié, C., Roth, O.
The Planetary Transits and Oscillations of stars mission (PLATO) will allow us to measure surface rotation and monitor photometric activity of tens of thousands of main sequence solar-type and subgiant stars. This paper is the first of a series dedic
Externí odkaz:
http://arxiv.org/abs/2407.03709
Autor:
Santos, A. R. G., Godoy-Rivera, D., Finley, A. J., Mathur, S., García, R. A., Breton, S. N., Broomhall, A. -M.
Publikováno v:
FrASS 11 (2024) 1356379
While the mission's primary goal was focused on exoplanet detection and characterization, Kepler made and continues to make extraordinary advances in stellar physics. Stellar rotation and magnetic activity are no exceptions. Kepler allowed for these
Externí odkaz:
http://arxiv.org/abs/2404.15911
Autor:
Lanza, A. F., Breton, S. N.
WASP-18 is an F6V star that hosts a planet with a mass of about 10 Jupiter masses and an orbital period of 0.94 days. In spite of its relatively fast rotation and young age, the star remains undetected in X-rays, thus implying a very low level of mag
Externí odkaz:
http://arxiv.org/abs/2404.08439
Autor:
García, R. A., Gourvès, C., Santos, A. R. G., Strugarek, A., Godoy-Rivera, D., Mathur, S., Delsanti, V., Breton, S. N., Beck, P. G., Brun, A. S., Mathis, S.
In 2013 a dearth of close-in planets around fast-rotating host stars was found using statistical tests on Kepler data. The addition of more Kepler and Transiting Exoplanet Survey Satellite (TESS) systems in 2022 filled this region of the diagram of s
Externí odkaz:
http://arxiv.org/abs/2311.00108
Autor:
Santos, A. R. G., Mathur, S., García, R. A., Broomhall, A. -M., Egeland, R., Jiménez, A., Godoy-Rivera, D., Breton, S. N., Claytor, Z. R., Metcalfe, T. S., Cunha, M. S., Amard, L.
Publikováno v:
A&A (2023), 672, A56
The photometric time series of solar-like stars can exhibit rotational modulation due to active regions co-rotating with the stellar surface, allowing us to constrain stellar rotation and magnetic activity. In this work we investigate the behavior, p
Externí odkaz:
http://arxiv.org/abs/2304.03165
Multi-campaign Asteroseismic Analysis of eight Solar-like pulsating stars observed by the K2 mission
Autor:
González-Cuesta, L., Mathur, S., García, R. A., Hernández, F. Pérez, Delsanti, V., Breton, S. N., Hedges, C., Jiménez, A., Della Gaspera, A., El-Issami, M., Fox, V., Godoy-Rivera, D., Pitot, S., Proust, N.
Publikováno v:
A&A 674, A106 (2023)
The NASA K2 mission that succeeded the nominal Kepler mission observed several hundreds of thousands of stars during its operations. While most of the stars were observed in single campaigns of 80 days, some of them were targeted for more than one ca
Externí odkaz:
http://arxiv.org/abs/2304.00087
Publikováno v:
A&A 663, A118 (2022)
Since the asteroseismic revolution, availability of efficient and reliable methods to extract stellar-oscillation mode parameters has been one of the keystone of modern stellar physics. In the helio- and asteroseismology fields, these methods are usu
Externí odkaz:
http://arxiv.org/abs/2202.07524
Autor:
Smith, A. M. S., Breton, S. N., Csizmadia, Sz., Dai, F., Gandolfi, D., García, R. A., Howard, A. W., Isaacson, H., Korth, J., Lam, K. W. F., Mathur, S., Nowak, G., Hernández, F. Pérez, Persson, C. M., Albrecht, S. H., Barragán, O., Cabrera, J., Cochran, W. D., Deeg, H. J., Fridlund, M., Georgieva, I. Y., Goffo, E., Guenther, E. W., Hatzes, A. P., Kabath, P., Livingston, J. H., Luque, R., Palle, E., Redfield, S., Rodler, F., Serrano, L. M., Van Eylen, V.
Publikováno v:
MNRAS 2022, 510, 5035
We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smalle
Externí odkaz:
http://arxiv.org/abs/2111.14660
Autor:
Breton, S. N., Pallé, P. L., García, R. A., Andersen, M. Fredslund, Grundahl, F., Christensen-Dalsgaard, J., Kjeldsen, H., Mathur, S.
Publikováno v:
A&A 658, A27 (2022)
The GOLF instrument on board SoHO has been in operation for almost 25 years but aging of the instrument has now strongly affected its performance, especially in the low-frequency p-mode region. At the end of the SoHO mission, the ground-based network
Externí odkaz:
http://arxiv.org/abs/2110.12698