Zobrazeno 1 - 10
of 1 006
pro vyhledávání: '"Chaplin, W."'
Autor:
Campante, T. L., Kjeldsen, H., Li, Y., Lund, M. N., Silva, A. M., Corsaro, E., da Silva, J. Gomes, Martins, J. H. C., Adibekyan, V., Silva, T. Azevedo, Bedding, T. R., Bossini, D., Buzasi, D. L., Chaplin, W. J., Costa, R. R., Cunha, M. S., Cristo, E., Faria, J. P., García, R. A., Huber, D., Lundkvist, M. S., Metcalfe, T. S., Monteiro, M. J. P. F. G., Neitzel, A. W., Nielsen, M. B., Poretti, E., Santos, N. C., Sousa, S. G.
Publikováno v:
A&A, 683, L16 (2024)
Fuelled by space photometry, asteroseismology is vastly benefitting the study of cool main-sequence stars, which exhibit convection-driven solar-like oscillations. Even so, the tiny oscillation amplitudes in K dwarfs continue to pose a challenge to s
Externí odkaz:
http://arxiv.org/abs/2403.16333
Autor:
Coelho, H. R., Miglio, A., Morel, T., Lagarde, N., Bossini, D., Chaplin, W. J., Degl'Innocenti, S., Dell'Omodarme, M., Garcia, R. A., Handberg, R., Hekker, S., Huber, D., Lund, M. N., Mathur, S., Moroni, P. G. Prada, Mosser, B., Serenelli, A., Rainer, M., Nascimento Jr., J. D. do, Poretti, E., Mathias, P., Valle, G., Tio, P. Dal, Duarte, T.
Photometric time series gathered by space telescopes such as CoRoT and Kepler allow to detect solar-like oscillations in red-giant stars and to measure their global seismic constraints, which can be used to infer global stellar properties (e.g. masse
Externí odkaz:
http://arxiv.org/abs/2312.11233
We present solar low-degree rotational splitting values based on a new analysis of Sun-as-a-star observations from the Birmingham Solar Oscillations Network, covering a 16,425-day period from 1976 December 31--2021 December 20 with a duty cycle of 57
Externí odkaz:
http://arxiv.org/abs/2309.02972
To detect Earth-mass planets using the Doppler method, a major obstacle is to differentiate the planetary signal from intrinsic stellar variability (e.g., pulsations, granulation, spots and plages). Convective blueshift, which results from small-scal
Externí odkaz:
http://arxiv.org/abs/2307.06986
Autor:
Nielsen, M. B., Davies, G. R., Chaplin, W. J., Ball, W. H, Ong, J. M. J., Hatt, E., Jones, B. P., Logue, M.
Publikováno v:
A&A 676, A117 (2023)
The asteroseismic analysis of stellar power density spectra is often computationally expensive. The models used in the analysis may use several dozen parameters to accurately describe features in the spectra caused by oscillation modes and surface gr
Externí odkaz:
http://arxiv.org/abs/2306.13577
The Birmingham Solar Oscillations Network (BiSON) observes acoustic oscillations of the Sun. The dominant noise source is caused by fluctuations of Earth's atmosphere, and BiSON seeks to mitigate this effect by combining multiple rapid observations i
Externí odkaz:
http://arxiv.org/abs/2303.00518
We describe a new spectrophotometer for the Birmingham Solar Oscillations Network (BiSON), based on a next generation observation platform, BiSON:NG, a significantly miniaturised system making use of inexpensive consumer-grade hardware and off-the-sh
Externí odkaz:
http://arxiv.org/abs/2210.11293
We examine the solar-cycle variation of the power in the low-degree helioseismic modes by looking at binned power spectra from 45 years of observations with the Birmingham Solar Oscillations Network, which provides a more robust estimate of the mode
Externí odkaz:
http://arxiv.org/abs/2205.15655
Current and future space-based observatories such as the Transiting Exoplanet Survey Satellite (TESS) and PLATO are set to provide an enormous amount of new data on oscillating stars, and in particular stars that oscillate similar to the Sun. Solar-l
Externí odkaz:
http://arxiv.org/abs/2203.09404
Publikováno v:
A&A 660, A15 (2022)
Dating stars is a major challenge with a deep impact on many astrophysical fields. One of the most promising techniques for this is using chemical abundances. Recent space- and ground-based facilities have improved the quantity of stars with accurate
Externí odkaz:
http://arxiv.org/abs/2201.05228