Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Verner, G. A."'
Autor:
Broomhall, A. -M., Miglio, A., Montalban, J., Eggenberger, P., Chaplin, W. J., Elsworth, Y., Scuflaire, R., Ventura, P., Verner, G. A.
Regions of rapid variation in the internal structure of a star are often referred to as acoustic glitches since they create a characteristic periodic signature in the frequencies of p modes. Here we examine the localized disturbance arising from the
Externí odkaz:
http://arxiv.org/abs/1403.7045
Autor:
Boumier, P., Benomar, O., Baudin, F., Verner, G., Appourchaux, T., Lebreton, Y., Gaulme, P., Chaplin, W., Garcia, R. A., Hekker, S., Regulo, C., Salabert, D., Stahn, T., Elsworth, Y., Gizon, L., Hall, M., Mathur, S., Michel, E., Morel, T., Mosser, B., Poretti, E., Rainer, M., Roxburgh, I., Nascimento Jr., J. -D. do, Samadi, R., Auvergne, M., Chaintreuil, S., Baglin, A., Catala, C.
Context. The object HD 43587Aa is a G0V star observed during the 145-day LRa03 run of the COnvection, ROtation and planetary Transits space mission (CoRoT), for which complementary High Accuracy Radial velocity Planet Searcher (HARPS) spectra with S/
Externí odkaz:
http://arxiv.org/abs/1402.5053
Measurement of acoustic glitches in solar-type stars from oscillation frequencies observed by Kepler
Autor:
Mazumdar, A., Monteiro, M. J. P. F. G., Ballot, J., Antia, H. M., Basu, S., Houdek, G., Mathur, S., Cunha, M. S., Aguirre, V. Silva, Garcia, R. A., Salabert, D., Verner, G. A., Christensen-Dalsgaard, J., Metcalfe, T. S., Sanderfer, D. T., Seader, S. E., Smith, J. C., Chaplin, W. J.
For the very best and brightest asteroseismic solar-type targets observed by Kepler, the frequency precision is sufficient to determine the acoustic depths of the surface convective layer and the helium ionization zone. Such sharp features inside the
Externí odkaz:
http://arxiv.org/abs/1312.4907
Autor:
Mathur, S., Bruntt, H., Catala, C., Benomar, O., Davies, G. R., Garcia, R. A., Salabert, D., Ballot, J., Mosser, B., Regulo, C., Chaplin, W. J., Elsworth, Y., Handberg, R., Hekker, S., Mantegazza, L., Michel, E., Poretti, E., Rainer, M., Roxburgh, I. W., Samadi, R., Steslicki, M., Uytterhoeven, K., Verner, G. A., Auvergne, M., Baglin, A., Forteza, S. Barcelo, Baudin, F., Cortes, T. Roca
The satellite CoRoT (Convection, Rotation, and planetary Transits) has provided high-quality data for almost six years. We show here the asteroseismic analysis and modeling of HD169392A, which belongs to a binary system weakly gravitationally bound a
Externí odkaz:
http://arxiv.org/abs/1308.0647
Autor:
Mathur, S., Bruntt, H., Catala, C., Benomar, O., Davies, G. R., Garcia, R. A., Salabert, D., Ballot, J., Mosser, B., Regulo, C., Chaplin, W. J., Elsworth, Y., Handberg, R., Hekker, S., Mantegazza, L., Michel, E., Poretti, E., Rainer, M., Roxburgh, I. W., Samadi, R., Steslicki, M., Uytterhoeven, K., Verner, G. A., Auvergne, M., Baglin, A., Forteza, S. Barcelo, Baudin, F., Cortes, T. Roca
The numerous results obtained with asteroseismology thanks to space missions such as CoRoT and Kepler are providing a new insight on stellar evolution. After five years of observations, CoRoT is going on providing high-quality data. We present here t
Externí odkaz:
http://arxiv.org/abs/1209.5696
Autor:
Appourchaux, T., Chaplin, W. J., Garcia, R. A., Gruberbauer, M., Verner, G. A., Antia, H. M., Benomar, O., Campante, T. L., Davies, G. R., Deheuvels, S., Handberg, R., Hekker, S., Howe, R., Régulo, C., Salabert, D., Bedding, T. R., White, T. R., Ballot, J., Mathur, S., Aguirre, V. Silva, Elsworth, Y. P., Basu, S., Gilliland, R. L., Christensen-Dalsgaard, J., Kjeldsen, H., Uddin, K., Stumpe, M. C., Barclay, T.
Solar-like oscillations have been observed by Kepler and CoRoT in several solar-type stars, thereby providing a way to probe the stars using asteroseismology. We provide the mode frequencies of the oscillations of various stars required to perform a
Externí odkaz:
http://arxiv.org/abs/1204.3147
Autor:
Bruntt, H., Basu, S., Smalley, B., Chaplin, W. J., Verner, G. A., Bedding, T. R., Catala, C., Gazzano, J. -C., Molenda-Zakowicz, J., Thygesen, A. O., Uytterhoeven, K., Hekker, S., Huber, D., Karoff, C., Mathur, S., Mosser, B., Appourchaux, T., Campante, T. L., Elsworth, Y., Garcia, R. A., Handberg, R., Metcalfe, T. S., Quirion, P. -O., Regulo, C., Roxburgh, I. W., Stello, D., Christensen-Dalsgaard, J., Kawaler, S. D., Kjeldsen, H., Morris, R. L., Quintana, E. V., Sanderfer, D. T.
We present a detailed spectroscopic study of 93 solar-type stars that are targets of the NASA/Kepler mission and provide detailed chemical composition of each target. We find that the overall metallicity is well-represented by Fe lines. Relative abun
Externí odkaz:
http://arxiv.org/abs/1203.0611
Autor:
Mathur, S., Metcalfe, T. S., Woitaszek, M., Bruntt, H., Verner, G. A., Christensen-Dalsgaard, J., Creevey, O. L., Dogan, G., Basu, S., Karoff, C., Stello, D., Appourchaux, T., Campante, T. L., Chaplin, W. J., Garcia, R. A., Bedding, T. R., Benomar, O., Bonanno, A., Deheuvels, S., Elsworth, Y., Gaulme, P., Guzik, J. A., Handberg, R., Hekker, S., Herzberg, W., Monteiro, M. J. P. F. G., Piau, L., Quirion, P. -O., Regulo, C., Roth, M., Salabert, D., Serenelli, A., Thompson, M. J., Trampedach, R., White, T. R., Ballot, J., Brandao, I. M., Molenda-Zakowicz, J., Kjeldsen, H., Twicken, J. D., Uddin, K., Wohler, B.
Asteroseismology with the Kepler space telescope is providing not only an improved characterization of exoplanets and their host stars, but also a new window on stellar structure and evolution for the large sample of solar-type stars in the field. We
Externí odkaz:
http://arxiv.org/abs/1202.2844
Autor:
Appourchaux, T., Benomar, O., Gruberbauer, M., Chaplin, W. J., Garcia, R. A., Handberg, R., Verner, G. A., Antia, H. M., Campante, T. L., Davies, G. R., Deheuvels, S., Hekker, S., Howe, R., Salabert, D., Bedding, T. R., White, T. R., Houdek, G., Aguirre, V. Silva, Elsworth, Y. P., Van Cleve, J., Clarke, B. D., Hall, J. R., Kjeldsen, H.
Solar-like oscillations have been observed by {{\it Kepler}} and CoRoT in several solar-type stars. We study the variations of stellar p-mode linewidth as a function of effective temperature. Time series of 9 months of Kepler data have been used. The
Externí odkaz:
http://arxiv.org/abs/1112.3295
Autor:
Mathur, S., Campante, T. L., Handberg, R., Garcia, R. A., Appourchaux, T., Bedding, T. R., Mosser, B., Chaplin, W. J., Ballot, J., Benomar, O., Bonanno, A., Corsaro, E., Gaulme, P., Hekker, S., Regulo, C., Salabert, D., Verner, G., White, T. R., Brandao, I. M., Creevey, O. L., Dogan, G., Bazot, M., Cunha, M. S., Elsworth, Y., Huber, D., Hale, S. J., Houdek, G., Karoff, C., Lundkvist, M., Metcalfe, T. S., Molenda-Zakowicz, J., Monteiro, M. J. P. F. G., Thompson, M. J., Stello, D., Christensen-Dalsgaard, J., Gilliland, R. L., Kawaler, S. D., Kjeldsen, H., Clarke, B. D., Girouard, F. R., Hall, J. R., Quintana, E. V., Sanderfer, D. T., Seader, S. E.
Having started science operations in May 2009, the Kepler photometer has been able to provide exquisite data of solar-like stars. Five out of the 42 stars observed continuously during the survey phase show evidence of oscillations, even though they a
Externí odkaz:
http://arxiv.org/abs/1110.0135