Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Ball, W. H"'
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
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
Autor:
Pezzotti, C., Ottoni, G., Buldgen, G., Lyttle, A., Eggenberger, P., Udry, S., Ségransan, D., Mayor, M., Lovis, C., Marmier, M., Miglio, A., Elsworth, Y., Davies, G. R., Ball, W. H.
Context. Increasing the number of detected exoplanets is far from anecdotal, especially for long-period planets that require a long duration of observation. More detections imply a better understanding of the statistical properties of exoplanet popul
Externí odkaz:
http://arxiv.org/abs/2201.01553
Autor:
Buldgen, G., Ottoni, G., Pezzotti, C., Lyttle, A., Eggenberger, P., Udry, S., Ségransan, D., Miglio, A., Mayor, M., Lovis, C., Elsworth, Y., Davies, G. R., Ball, W. H.
The advent of asteroseismology as the golden path to precisely characterize single stars naturally led to synergies with the field of exoplanetology. Today, the precise determination of stellar masses, radii and ages for exoplanet-host stars is a dri
Externí odkaz:
http://arxiv.org/abs/2201.01530
Rotationally-induced mode splitting frequencies of low-luminosity subgiants suggest that angular momentum transport mechanisms are 1-2 orders of magnitude more efficient in these stars than predicted by theory. Constraints on the rotation profile of
Externí odkaz:
http://arxiv.org/abs/2111.10953
Autor:
Cunha, M. S., Roxburgh, I. W., Børsen-Koch, V. Aguirre, Ball, W. H., Basu, S., Chaplin, W. J., Goupil, M. -J., Nsamba, B., Ong, J., Reese, D. R., Verma, K., Belkacem, K., Campante, T., Christensen-Dalsgaard, J., Clara, M. T., Deheuvels, S., Monteiro, M. J. P. F. G., Noll, A., Ouazzani, R. M., Rørsted, J. L., Stokholm, A., Winther, M. L.
Asteroseismology is a powerful tool to infer fundamental stellar properties. The use of these asteroseismic-inferred properties in a growing number of astrophysical contexts makes it vital to understand their accuracy. Consequently, we performed a ha
Externí odkaz:
http://arxiv.org/abs/2110.03332
Autor:
Nielsen, M. B., Davies, G. R., Ball, W. H., Lyttle, A. J., Li, T., Hall, O. J., Chaplin, W. J., Gaulme, P., Carboneau, L., Ong, J. M. J., García, R. A., Mosser, B., Roxburgh, I. W., Corsaro, E., Benomar, O., Moya, A., Lund, M. N.
Asteroseismology is an exceptional tool for studying stars by using the properties of observed modes of oscillation. So far the process of performing an asteroseismic analysis of a star has remained somewhat esoteric and inaccessible to non-experts.
Externí odkaz:
http://arxiv.org/abs/2012.00580
Autor:
Nielsen, M. B., Ball, W. H., Standing, M. R., Triaud, A. H. M. J., Buzasi, D., Carboneau, L., Stassun, K. G., Kane, S. R., Chaplin, W. J., Bellinger, E. P., Mosser, B., Roxburgh, I. W., Orhan, Z. Çelik, Yıldız, M., Örtel, S., Vrard, M., Mazumdar, A., Ranadive, P., Deal, M., Davies, G. R., Campante, T. L., García, R. A., Mathur, S., González-Cuesta, L., Serenelli, A.
Publikováno v:
A&A 641, A25 (2020)
The Transiting Exoplanet Survey Satellite (TESS) is observing bright known planet-host stars across almost the entire sky. These stars have been subject to extensive ground-based observations, providing a large number of radial velocity (RV) measurem
Externí odkaz:
http://arxiv.org/abs/2007.00497
Autor:
Schofield, M., Chaplin, W. J., Huber, D., Campante, T. L., Davies, G. R., Miglio, A., Ball, W. H., Appourchaux, T., Basu, S., Bedding, T. R., Christensen-Dalsgaard, J., Creevey, O., Garcia, R. A., Handberg, R., Kawaler, S. D., Kjeldsen, H., Latham, D. W., Lund, M. N., Metcalfe, T. S., Ricker, G. R., Serenelli, A., Aguirre, V. Silva, Stello, D., Vanderspek, R.
We present the target list of solar-type stars to be observed in short-cadence (2-min) for asteroseismology by the NASA Transiting Exoplanet Survey Satellite (TESS) during its 2-year nominal survey mission. The solar-like Asteroseismic Target List (A
Externí odkaz:
http://arxiv.org/abs/1901.10148
Autor:
Rendle, B. M., Buldgen, G., Miglio, A., Reese, D., Noels, A., Davies, G. R., Campante, T. L., Chaplin, W. J., Lund, M. N., Kuszlewicz, J. S., Scott, L. J. A., Scuflaire, R., Ball, W. H., Smetana, J., Nsamba, B.
A key aspect in the determination of stellar properties is the comparison of observational constraints with predictions from stellar models. Asteroseismic Inference on a Massive Scale (AIMS) is an open source code that uses Bayesian statistics and a
Externí odkaz:
http://arxiv.org/abs/1901.02663