Zobrazeno 41 - 50
of 294
pro vyhledávání: '"Metcalfe, T. S."'
Autor:
Aguirre, V. Silva, Casagrande, L., Basu, S., Campante, T. L., Chaplin, W. J., Huber, D., Miglio, A., Serenelli, A. M., Ballot, J., Bedding, T. R., Christensen-Dalsgaard, J., Creevey, O. L., Elsworth, Y., Garcia, R. A., Gilliland, R. L., Hekker, S., Kjeldsen, H., Mathur, S., Metcalfe, T. S., Monteiro, M. J. P. F. G., Mosser, B., Pinsonneault, M. H., Stello, D., Weiss, A., Tenenbaum, P., Twicken, J. D., Uddin, K.
Accurately determining the properties of stars is of prime importance for characterizing stellar populations in our Galaxy. The field of asteroseismology has been thought to be particularly successful in such an endeavor for stars in different evolut
Externí odkaz:
http://arxiv.org/abs/1208.6294
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:
Metcalfe, T. S., Chaplin, W. J., Appourchaux, T., Garcia, R. A., Basu, S., Brandao, I., Creevey, O. L., Deheuvels, S., Dogan, G., Eggenberger, P., Karoff, C., Miglio, A., Stello, D., Yildiz, M., Celik, Z., Antia, H. M., Benomar, O., Howe, R., Regulo, C., Salabert, D., Stahn, T., Bedding, T. R., Davies, G. R., Elsworth, Y., Gizon, L., Hekker, S., Mathur, S., Mosser, B., Bryson, S. T., Still, M. D., Christensen-Dalsgaard, J., Gilliland, R. L., Kawaler, S. D., Kjeldsen, H., Ibrahim, K. A., Klaus, T. C., Li, J.
Publikováno v:
Astrophys.J.748:L10,2012
The evolved solar-type stars 16 Cyg A & B have long been studied as solar analogs, yielding a glimpse into the future of our own Sun. The orbital period of the binary system is too long to provide meaningful dynamical constraints on the stellar prope
Externí odkaz:
http://arxiv.org/abs/1201.5966
Recently, the study of the CoRoT target HD 49933 showed evidence of variability of its magnetic activity. This was the first time that a stellar activity was detected using asteroseismic data. For the Sun and HD 49933, we observe an increase of the p
Externí odkaz:
http://arxiv.org/abs/1110.0875
Autor:
Ceillier, T., Ballot, J., Garcia, R. A., Davies, G. R., Mathur, S., Metcalfe, T. S., Salabert, D.
Seismic analyses of the CoRoT target HD 49933 have revealed a magnetic cycle. Further insight reveals that frequency shifts of oscillation modes vary as a function of frequency, following a similar pattern to that found in the Sun. In this preliminar
Externí odkaz:
http://arxiv.org/abs/1110.0307
Recently, the study of the CoRoT target, HD49933, showed evidence of variability of its magnetic activity. This was the first time that a stellar activity was detected using asteroseismic data. For the Sun and HD49933, we observe an increase of the p
Externí odkaz:
http://arxiv.org/abs/1110.0137
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
Autor:
Chaplin, W. J., Kjeldsen, H., Christensen-Dalsgaard, J., Basu, S., Miglio, A., Appourchaux, T., Bedding, T. R., Elsworth, Y., García, R. A., Gilliland, R. L., Girardi, L., Houdek, G., Karoff, C., Kawaler, S. D., Metcalfe, T. S., Molenda-Zakowicz, J., Monteiro, M. J. P. F. G., Thompson, M. J., Verner, G. A., Ballot, J., Bonanno, A., Brandao, I. M., Broomhall, A. -M., Bruntt, H., Campante, T. L., Corsaro, E., Creevey, O. L., Dogan, G., Esch, L., Gai, N., Gaulme, P., Hale, S. J., Handberg, R., Hekker, S., Huber, D., Jiménez, A., Mathur, S., Mazumdar, A., Mosser, B., New, R., Pinsonneault, M. H., Pricopi, D., Quirion, P. -O., Régulo, C., Salabert, D., Serenelli, A. M., Aguirre, V. Silva, Sousa, S. G., Stello, D., Stevens, I. R., Suran, M. D., Uytterhoeven, K., White, T. R., Borucki, W. J., Brown, T. M., Jenkins, J. M., Kinemuchi, K., Van Cleve, J., Klaus, T. C.
Publikováno v:
Science, 2011, volume 332, page 213
In addition to its search for extra-solar planets, the NASA Kepler Mission provides exquisite data on stellar oscillations. We report the detections of oscillations in 500 solartype stars in the Kepler field of view, an ensemble that is large enough
Externí odkaz:
http://arxiv.org/abs/1109.4723
Autor:
Verner, G. A., Chaplin, W. J., Basu, S., Brown, T. M., Hekker, S., Huber, D., Karoff, C., Mathur, S., Metcalfe, T. S., Mosser, B., Quirion, P. -O., Appourchaux, T., Bedding, T. R., Bruntt, H., Campante, T. L., Elsworth, Y., García, R. A., Handberg, R., Régulo, C., Roxburgh, I. W., Stello, D., Christensen-Dalsgaard, J., Gilliland, R. L., Kawaler, S. D., Kjeldsen, H., Allen, C., Clarke, B. D., Girouard, F. R.
Publikováno v:
2011ApJ...738L..28V
We calculate precise stellar radii and surface gravities from the asteroseismic analysis of over 500 solar-type pulsating stars observed by the Kepler space telescope. These physical stellar properties are compared with those given in the Kepler Inpu
Externí odkaz:
http://arxiv.org/abs/1109.0869