Accurate Characterization of High-Degree Modes Using MDI Observations

Autor: Korzennik, S. G., Rabello-Soares, M. C., Schou, J., Larson, T. P.

We present the first accurate characterization of high-degree modes, derived using the best MDI full-disk full-resolution data set available. A ninety day long time series of full-disk two arc-second per pixel resolution dopplergrams was acquired in

Externí odkaz: http://arxiv.org/abs/1209.6414

The asteroseismic potential of Kepler: first results for solar-type stars

Autor: Chaplin, W. J., Appourchaux, T., Elsworth, Y., Garcia, R. A., Houdek, G., Karoff, C., Metcalfe, T. S., Molenda-Zakowicz, J., Monteiro, M. J. P. F. G., Thompson, M. J., Brown, T. M., Christensen-Dalsgaard, J., Gilliland, R. L., Kjeldsen, H., Borucki, W. J., Koch, D., Jenkins, J. M., Ballot, J., Basu, S., Bazot, M., Bedding, T. R., Benomar, O., Bonanno, A., Brandao, I. M., Bruntt, H., Campante, T. L., Creevey, O. L., Di Mauro, M. P., Dogan, G., Dreizler, S., Eggenberger, P., Esch, L., Fletcher, S. T., Frandsen, S., Gai, N., Gaulme, P., Handberg, R., Hekker, S., Howe, R., Huber, D., Korzennik, S. G., Lebrun, J. C., Leccia, S., Martic, M., Mathur, S., Mosser, B., New, R., Quirion, P. -O., Regulo, C., Roxburgh, I. W., Salabert, D., Schou, J., Sousa, S. G., Stello, D., Verner, G. A., Arentoft, T., Barban, C., Belkacem, K., Benatti, S., Biazzo, K., Boumier, P., Bradley, P. A., Broomhall, A. -M., Buzasi, D. L., Claudi, R. U., Cunha, M. S., D'Antona, F., Deheuvels, S., Derekas, A., Hernandez, A. Garcia, Giampapa, M. S., Goupil, M. J., Gruberbauer, M., Guzik, J. A., Hale, S. J., Ireland, M. J., Kiss, L. L., Kitiashvili, I. N., Kolenberg, K., Korhonen, H., Kosovichev, A. G., Kupka, F., Lebreton, Y., Leroy, B., Ludwig, H. -G., Mathis, S., Michel, E., Miglio, A., Montalban, J., Moya, A., Noels, A., Noyes, R. W., Palle, P. L., Piau, L., Preston, H. L., Cortes, T. Roca, Roth, M., Sato, K. H., Schmitt, J., Serenelli, A. M., Aguirre, V. Silva, Stevens, I. R., Suarez, J. C., Suran, M. D., Trampedach, R., Turck-Chieze, S., Uytterhoeven, K., Ventura, R.

We present preliminary asteroseismic results from Kepler on three G-type stars. The observations, made at one-minute cadence during the first 33.5d of science operations, reveal high signal-to-noise solar-like oscillation spectra in all three stars:

Externí odkaz: http://arxiv.org/abs/1001.0506

Impact of low-frequency p modes on the inversions of the internal rotation of the Sun

Autor: Salabert, D., Eff-Darwich, A., Howe, R., Korzennik, S. G.

We used the m-averaged spectrum technique ("collapsogram") to extract the low-frequency solar p-mode parameters of low- and intermediate-angular degrees (l \leq 35) in long time series of GONG and MDI observations. Rotational splittings and central f

Externí odkaz: http://arxiv.org/abs/0811.1745

A New Spectroscopic and Photometric Analysis of the Transiting Planet Systems TrES-3 and TrES-4

Autor: Sozzetti, A., Torres, G., Charbonneau, D., Winn, J. N., Korzennik, S. G., Holman, M. J., Latham, D. W., Laird, J. B., Fernandez, J., O'Donovan, F. T., Mandushev, G., Dunham, E., Everett, M. E., Esquerdo, G. A., Rabus, M., Belmonte, J. A., Deeg, H. J., Brown, T. N., Hidas, M. G., Baliber, N.

Publikováno v: Astrophys.J.691:1145-1158,2009

We report new spectroscopic and photometric observations of the parent stars of the recently discovered transiting planets TrES-3 and TrES-4. A detailed abundance analysis based on high-resolution spectra yields [Fe/H] $= -0.19\pm 0.08$, $T_\mathrm{e

Externí odkaz: http://arxiv.org/abs/0809.4589

Sensitivity analysis of the solar rotation to helioseismic data from GONG, GOLF and MDI observations

Autor: Eff-Darwich, A., Korzennik, S. G., Jimenez-Reyes, S. J., Garcia, R. A.

Accurate determination of the rotation rate in the radiative zone of the sun from helioseismic observations requires rotational frequency splittings of exceptional quality as well as reliable inversion techniques. We present here inferences based on

Externí odkaz: http://arxiv.org/abs/0802.3604