Results 1 to 10 of about 15,242 (225)

Double-Mode Stellar Pulsations [PDF]

, 2000
The status of the hydrodynamical modelling of nonlinear multi-mode stellar pulsations is discussed. The hydrodynamical modelling of steady double-mode (DM) pulsations has been a long-standing quest that is finally being concluded.
A Udalski, D. Gabor, DL Welch, G Bono, G Kovacs, G Kovacs, G. Kovacs, J. Klapp, JD Jackson, JP Beaulieu, JP Beaulieu, JR Buchler, JR Buchler, JR Buchler, JR Buchler, JR Buchler, JR Buchler, JR Buchler, L Cohen, L Szabados, L Szabados, M Feuchtinger, M Gehmeyr, M Gehmeyr, M Takeuti, M Takeuti, M. Gehmeyr, MU Feuchtinger, N Baker, P Coullet, P Yecko, R Kuhfuß, RF Stellingwerf, VM Canuto, VM Canuto, W Dziembowski, W Dziembowski, Z Kollath   +37 more
core   +2 more sources

Detection of frequency spacings in the young O-type binary HD 46149 from CoRoT photometry [PDF]

, 2010
Using the CoRoT space based photometry of the O-type binary HD46149, stellar atmospheric effects related to rotation can be separated from pulsations, because they leave distinct signatures in the light curve.
A. Baglin, A. Noels, Abazajian, Aerts, Appourchaux, Asplund, Ausseloos, Auvergne, Baranne, Baudin, Belkacem, Belkacem, Boggess, Boksenberg, Bonatto, Böhm-Vitense, C. Aerts, C. Catala, Cardelli, Carrier, Caughlan, Cousins, De Cat, de Jong, Degroote, Degroote, E. Michel, E. Poretti, F. Baudin, Fazio, Ferguson, Formicola, Garmany, Hubrig, Jaschek, Johnson, K. Smolders, Kjeldsen, L. Mahy, Leparskas, M. Auvergne, M. Briquet, M. Hareter, M. Rainer, M. Vučković, Mahy, Massey, Mayor, Michel, P. Degroote, Przybilla, Puls, R. Oreiro, R. Samadi, Rauw, Rogers, Ryans, S. Simón-Díaz, Sahnow, Scuflaire, Scuflaire, Seaton, Simón-Díaz, Stellingwerf, Underhill, Walborn, Walker, Zechmeister, Zima   +68 more
core   +16 more sources

Heartbeat stars and the ringing of tidal pulsations [PDF]

, 2015
With the advent of high precision photometry from satellites such as Kepler and CoRoT, a whole new layer of interesting and astounding astronomical objects has been revealed: heartbeat stars are an example of such objects. Heartbeat stars are eccen- tric
Ballot, J, Fuller, J, García, RA, Hambleton, K, Kurtz, DW, Prsa, A, Thompson (SU), S   +6 more
core   +2 more sources

Pulsating Stellar Atmospheres [PDF]

Symposium - International Astronomical Union, 1997
We review the basic concepts, present state of theoretical models, and the future prospects for theory and observations of pulsating stellar atmospheres. Our emphasis is on radially pulsating cool stars, which dynamic atmospheres provide a general example for the differences with standard static model atmospheres.
openaire   +3 more sources

Searching for coherent pulsations in ultraluminous X-ray sources [PDF]

, 2014
Luminosities of ultraluminous X-ray sources (ULXs) are uncomfortably large if compared to the Eddington limit for isotropic accretion onto stellar-mass object.
Doroshenko, V., Ducci, L., Santangelo, A.   +2 more
core   +1 more source

Seismic evolution of low/intermediate mass PMS stars [PDF]

, 2007
This article presents a study of the evolution of the internal structure and seismic properties expected for low/intermediate mass Pre-Main Sequence (PMS) stars. Seismic and non-seismic properties of PMS stars were analysed.
Antia, Antonello, Bedding, Breger, Browning, Christensen-Dalsgaard, Christensen-Dalsgaard, F. J. G. Pinheiro, Goldreich, Guenther, Kjeldsen, Marconi, Marques, Mazumdar, Morel, Pinheiro, Ripepi, Roxburgh, Samadi, Samadi, Tassoul   +20 more
core   +1 more source

Double-Mode Stellar Pulsation [PDF]

International Astronomical Union Colloquium, 1993
AbstractThe current observational and theoretical status of the double-mode variables is reviewed. Focusing mostly on the RR Lyrae stars, we address the question of the observational evidence of modal stability. The problem of stationarity is a crucial issue in the modelling of these stars.We mention past efforts in hydrodynamical and analytical ...
openaire   +1 more source

KOI-54: The Kepler Discovery of Tidally Excited Pulsations and Brightenings in a Highly Eccentric Binary [PDF]

, 2011
Kepler observations of the star HD 187091 (KIC 8112039, hereafter KOI-54) revealed a remarkable light curve exhibiting sharp periodic brightening events every 41.8 days with a superimposed set of oscillations forming a beating pattern in phase with the ...
Aerts, Conny, Allen, Christopher, Batalha, Natalie M., Borucki, William J., Brown, Timothy M., Brugamyer, Erik, Bryson, Steve, Buchhave, Lars A., Caldwell, Douglas A., Cochran, William D., Gautier, Thomas N., III, Gilliland, Ronald L., Guzik, Joyce Ann, Howell, Steve B., Ibrahim, Khadeejah A., Isaacson, Howard, Jenkins, Jon M., Kinemuchi, K., Koch, David G., Kurtz, D. W., Latham, David W., Marcy, Geoffrey W., Orosz, Jerome A., Prsa, Andrej, Quinn, Samuel N., Still, Martin, Street, Rachel, Welsh, William F., Wohler, Bill, Zima, Wolfgang   +29 more
core   +2 more sources

Hydrodynamical Survey of First Overtone Cepheids [PDF]

, 2000
A hydrodynamical survey of the pulsational properties of first overtone Galactic Cepheids is presented. The goal of this study is to reproduce their observed light- and radial velocity curves.
Aikawa T., Antonello E., Antonello E., Antonello E., Beaulieu J. P., Buchler J. R., Dorfi E. A., Feuchtinger M. U., Feuchtinger M. U., Feuchtinger M. U., Feuchtinger M. U., Gehmeyr M., Hertzsprung E., J. Robert Buchler, Kienzle F., Kuhfuss R., Michael Feuchtinger, Poretti E., Schaller G., Udalski A., Wuchterl G., Yecko P. A., Zoltan Kollath   +22 more
core   +2 more sources

Effluent stellar pulsation

The Astrophysical Journal, 1990
Near-discontinuities in the density of a star, such as that encountered in the transition between a chromosphere and a corona, reflect acoustic waves and thereby partially contain them within the star. These reflections help to establish a resonant acoustic cavity with discrete characteristic frequencies, even for modes with frequencies above the ...
N. J. Balmforth, D. O. Gough
openaire   +1 more source