Zobrazeno 1 - 10
of 321
pro vyhledávání: '"Breger, M."'
Pulsators on and near the main sequence show period and amplitude changes that are too large to be the product of stellar evolution. The multiperiodic Delta Scuti stars are well suited to study these changes. This requires a very large amount of phot
Externí odkaz:
http://arxiv.org/abs/1612.06827
Autor:
Schmid, V. S., Themeßl, N., Breger, M., Degroote, P., Aerts, C., Beck, P. G., Tkachenko, A., Van Reeth, T., Bloemen, S., Debosscher, J., Castanheira, B. G., McArthur, B. E., Pápics, P. I., Fritz, V., Falcon, R. E.
Publikováno v:
A&A 570, A33 (2014)
More than 40 years of ground-based photometric observations of the delta Sct star 4CVn revealed 18 independent oscillation frequencies, including radial as well as non-radial p-modes of low spherical degree l<=2. From 2008 to 2011, more than 2000 spe
Externí odkaz:
http://arxiv.org/abs/1407.4257
Autor:
von Essen, C., Czesla, S., Wolter, U., Breger, M., Herrero, E., Mallonn, M., Ribas, I., Strassmeier, K. G., Morales, J. C.
To date, WASP-33 is the only delta Scuti star known to be orbited by a hot Jupiter. The pronounced stellar pulsations, showing periods comparable to the primary transit duration, interfere with the transit modeling. Therefore our main goal is to stud
Externí odkaz:
http://arxiv.org/abs/1311.3614
This paper examines the 46 frequencies found in the Delta Sct star KIC 8054146 involving a frequency spacing of exactly 2.814 c/d (32.57 microHz), which is also a dominant low-frequency peak near or equal to the rotational frequency. These 46 frequen
Externí odkaz:
http://arxiv.org/abs/1307.0388
Autor:
Murphy, S. J., Pigulski, A., Kurtz, D. W., Suarez, J. C., Handler, G., Balona, L. A., Smalley, B., Uytterhoeven, K., Szabo, R., Thygesen, A. O., Elkin, V., Breger, M., Grigahcene, A., Guzik, J. A., Nemec, J. M., Southworth, J.
The candidate SX Phe star KIC 11754974 shows a remarkably high number of combination frequencies in the Fourier amplitude spectrum: 123 of the 166 frequencies in our multi-frequency fit are linear combinations of independent modes. Predictable patter
Externí odkaz:
http://arxiv.org/abs/1304.1543
Autor:
Breger, M., Fossati, L., Balona, L., Kurtz, D. W., Robertson, P., Bohlender, D., Lenz, P., Mueller, I., Lueftinger, Th., Clarke, Bruce D., Hall, Jennifer R., Ibrahim, Khadeejah A.
Two years of Kepler data of KIC 8054146 (delta Sct/gamma Dor hybrid) revealed 349 statistically significant frequencies between 0.54 and 191.36 c/d (6.3 microHz to 2.21 mHz). The 117 low frequencies cluster in specific frequency bands, but do not sho
Externí odkaz:
http://arxiv.org/abs/1209.4836
Autor:
Breger, M., Hareter, M., Endl, Markus, Kuschnig, R., Weiss, W. W., Matthews, J. M., Guenther, D. B., Moffat, A. F. J., Rowe, J. F., Rucinski, S. M., Sasselov, D.
The Praesepe cluster contains a number of Delta Sct and Gamma Dor pulsators. Asteroseismology of cluster stars is simplified by the common distance, age and stellar abundances. Since asteroseismology requires a large number of known frequencies, the
Externí odkaz:
http://arxiv.org/abs/1201.0892
Autor:
Zwintz, K., Lenz, P., Breger, M., Pamyatnykh, A. A., Zdravkov, T., Kuschnig, R., Matthews, J. M., Guenther, D. B., Moffat, A. F. J., Rowe, J. F., Rucinski, S. M., Sasselov, D., Weiss, W. W.
We present high-precision time-series photometry of the classical delta Scuti star HD 144277 obtained with the MOST (Microvariability and Oscillations of STars) satellite in two consecutive years. The observed regular frequency patterns are investiga
Externí odkaz:
http://arxiv.org/abs/1109.2743
Autor:
Uytterhoeven, K., Moya, A., Grigahcene, A., Guzik, J. A., Gutierrez-Soto, J., Smalley, B., Handler, G., Balona, L. A., Niemczura, E., Machado, L. Fox, Benatti, S., Chapellier, E., Tkachenko, A., Szabo, R., Suarez, J. C., Ripepi, V., Pascual, J., Mathias, P., Martin-Ruiz, S., Lehmann, H., Jackiewicz, J., Hekker, S., Gruberbauer, M., Garcia, R. A., Dumusque, X., Diaz-Fraile, D., Bradley, P., Antoci, V., Roth, M., Leroy, B., Murphy, S. J., De Cat, P., Cuypers, J., Kjeldsen, H., Christensen-Dalsgaard, J., Breger, M., Pigulski, A., Kiss, L. L., Still, M., Thompson, S. E., Van Cleve, J.
The Kepler spacecraft is providing time series of photometric data with micromagnitude precision for hundreds of A-F type stars. We present a first general characterization of the pulsational behaviour of A-F type stars as observed in the Kepler ligh
Externí odkaz:
http://arxiv.org/abs/1107.0335
Autor:
Breger, M., Balona, L., Lenz, P., Hollek, J. K., Kurtz, D. W., Catanzaro, G., Marconi, M., Pamyatnykh, A. A., Smalley, B., Suarez, J. C., Szabo, R., Uytterhoeven, K., Ripepi, V., Christensen-Dalsgaard, J., Kjeldsen, H., Fanelli, M. N., Ibrahim, K. A., Uddin, K.
In the faint star KIC 9700322 observed by the Kepler satellite, 76 frequencies with amplitudes from 14 to 29000 ppm were detected. The two dominant frequencies at 9.79 and 12.57 c/d (113.3 and 145.5 \mu Hz), interpreted to be radial modes, are accomp
Externí odkaz:
http://arxiv.org/abs/1012.4373