Zobrazeno 1 - 10
of 356
pro vyhledávání: '"Sylvain N"'
Autor:
Garcia, Rafael A., Breton, Sylvain N., Salabert, David, Tripathy, Sushant C., Jain, Kiran, Mathur, Savita, Panetier, Eva
Publikováno v:
A&A 691, L20 (2024)
Solar magnetic activity follows regular cycles of about 11 years with an inversion of polarity in the poles every 22 years. This changing surface magnetism impacts the properties of the acoustic modes. The acoustic mode frequency shifts are a good pr
Externí odkaz:
http://arxiv.org/abs/2410.23928
Autor:
Metcalfe, Travis S., van Saders, Jennifer L., Huber, Daniel, Buzasi, Derek, Garcia, Rafael A., Stassun, Keivan G., Basu, Sarbani, Breton, Sylvain N., Claytor, Zachary R., Corsaro, Enrico, Nielsen, Martin B., Ong, J. M. Joel, Saunders, Nicholas, Stokholm, Amalie, Bedding, Timothy R.
Publikováno v:
Astrophys. J. 974, 31 (2024)
The solar-type subgiant $\beta$ Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was estimated to be near 27 days. As a southern hemisphere target it was not monitored by long-te
Externí odkaz:
http://arxiv.org/abs/2408.05482
Autor:
Bétrisey, Jérôme, Farnir, Martin, Breton, Sylvain N., García, Rafael A., Broomhall, Anne-Marie, Amarsi, Anish M., Kochukhov, Oleg
Publikováno v:
A&A 688, L17 (2024)
Building on the success of previous missions, asteroseismic modelling will play a key role in future space-based missions, such as PLATO, CubeSpec, and Roman. Despite remarkable achievements, asteroseismology has revealed significant discrepancies in
Externí odkaz:
http://arxiv.org/abs/2407.15655
The satellite Planetary Transits and Oscillations of stars (PLATO), due to be launched late 2026, will provide us with an unprecedented sample of light curves of solar-type stars that will exhibit both solar-type oscillations and signatures of activi
Externí odkaz:
http://arxiv.org/abs/2312.02811
Autor:
Breton, Sylvain N., Lanza, Antonino F., Messina, Sergio, García, Rafael A., Mathur, Savita, Santos, Angela R. G., Bugnet, Lisa, Corsaro, Enrico, Pagano, Isabella
Due to be launched late 2026, the PLATO mission will bring the study of main-sequence solar-type and low-mass stars into a new era. In particular, PLATO will provide the community with a stellar sample with solar-type oscillations and activity-induce
Externí odkaz:
http://arxiv.org/abs/2310.01465
Autor:
Breton, Sylvain N., Dhouib, Hachem, García, Rafael A., Brun, Allan Sacha, Mathis, Stéphane, Hernández, Fernando Pérez, Mathur, Savita, Dyrek, Achrène, Santos, Angela R. G., Pallé, Pere L.
Gravity modes (g modes), mixed gravito-acoustic modes (mixed modes), and gravito-inertial modes (gi modes) possess unmatched properties as probes for stars with radiative interiors. The structural and dynamical constraints that they are able to provi
Externí odkaz:
http://arxiv.org/abs/2309.15691
Autor:
Metcalfe, Travis S., Buzasi, Derek, Huber, Daniel, Pinsonneault, Marc H., van Saders, Jennifer L., Ayres, Thomas R., Basu, Sarbani, Drake, Jeremy J., Egeland, Ricky, Kochukhov, Oleg, Petit, Pascal, Saar, Steven H., See, Victor, Stassun, Keivan G., Li, Yaguang, Bedding, Timothy R., Breton, Sylvain N., Finley, Adam J., Garcia, Rafael A., Kjeldsen, Hans, Nielsen, Martin B., Ong, J. M. Joel, Rorsted, Jakob L., Stokholm, Amalie, Winther, Mark L., Clark, Catherine A., Godoy-Rivera, Diego, Ilyin, Ilya V., Strassmeier, Klaus G., Jeffers, Sandra V., Marsden, Stephen C., Vidotto, Aline A., Baliunas, Sallie, Soon, Willie
Publikováno v:
Astron. J. 166, 167 (2023)
The bright star $\lambda$ Ser hosts a hot Neptune with a minimum mass of 13.6 $M_\oplus$ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun. W
Externí odkaz:
http://arxiv.org/abs/2308.09808
Autor:
Huber, Daniel, Pinsonneault, Marc, Beck, Paul, Bedding, Timothy R., Bland-Hawthorn, Joss, Breton, Sylvain N., Bugnet, Lisa, Chaplin, William J., Garcia, Rafael A., Grunblatt, Samuel K., Guzik, Joyce A., Hekker, Saskia, Kawaler, Steven D., Mathis, Stephane, Mathur, Savita, Metcalfe, Travis, Mosser, Benoit, Ness, Melissa K., Piro, Anthony L., Serenelli, Aldo, Sharma, Sanjib, Soderblom, David R., Stassun, Keivan G., Stello, Dennis, Tayar, Jamie, van Belle, Gerard T., Zinn, Joel C.
Asteroseismology has transformed stellar astrophysics. Red giant asteroseismology is a prime example, with oscillation periods and amplitudes that are readily detectable with time-domain space-based telescopes. These oscillations can be used to infer
Externí odkaz:
http://arxiv.org/abs/2307.03237
Autor:
Mathur, Savita, Claytor, Zachary R., Santos, Angela R. G., García, Rafael A., Amard, Louis, Bugnet, Lisa, Corsaro, Enrico, Bonanno, Alfio, Breton, Sylvain N., Godoy-Rivera, Diego, Pinsonneault, Marc H., van Saders, Jennifer
The ages of solar-like stars have been at the center of many studies such as exoplanet characterization or Galactic-archaeology. While ages are usually computed from stellar evolution models, relations linking ages to other stellar properties, such a
Externí odkaz:
http://arxiv.org/abs/2306.11657
Autor:
Campante, Tiago L., Li, Tanda, Ong, J. M. Joel, Corsaro, Enrico, Cunha, Margarida S., Bedding, Timothy R., Bossini, Diego, Breton, Sylvain N., Buzasi, Derek L., Chaplin, William J., Deal, Morgan, García, Rafael A., Hill, Michelle L., Hon, Marc, Huber, Daniel, Jiang, Chen, Kane, Stephen R., Kayhan, Cenk, Kuszlewicz, James S., Lillo-Box, Jorge, Mathur, Savita, Monteiro, Mário J. P. F. G., Pereira, Filipe, Santos, Nuno C., Serenelli, Aldo, Stello, Dennis
Asteroseismology is playing an increasingly important role in the characterization of red-giant host stars and their planetary systems. Here, we conduct detailed asteroseismic modeling of the evolved red-giant branch (RGB) hosts KOI-3886 and $\iota$
Externí odkaz:
http://arxiv.org/abs/2304.01570