Results 51 to 60 of about 12,099 (232)

Asteroseismology of the planet-hosting star mu Arae. II. Seismic analysis

, 2005
As most exoplanets host stars, HD 160691 (alias mu Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star would be completely overmetallic, or it may be due to ...
Bazot, Bazot, Bedding, Bouchy, Bouchy, Bouchy, Bouchy, Butler, D. Sosnowska, F. Bouchy, Gonzalez, Gozdziewski, Henry, Israelian, Jones, Lomb, M. Bazot, Mayor, Murray, N. C. Santos, Noyes, Pepe, Queloz, S. Vauclair, Santos, Santos, Santos, Santos, Santos, Scargle, Tassoul, Vauclair, Vaughan   +32 more
core   +4 more sources

Observational asteroseismology of hot subdwarf stars [PDF]

, 2010
Hot subdwarf stars are particularly challenging for asteroseismology due to their rapid pulsation periods, intrinsic faintness and relative rarity both in the field and in clusters.
Østensen, Roy H.
core   +1 more source

On the Nature of the Core of α Centauri A: The Impact of the Metallicity Mixture

Frontiers in Astronomy and Space Sciences, 2019
Forward asteroseismic modeling plays an important role toward a complete understanding of the physics taking place in deep stellar interiors. With a dynamical mass in the range over which models develop convective cores while in the main sequence, the ...
Benard Nsamba, Benard Nsamba, Tiago L. Campante, Tiago L. Campante, Mário J. P. F. G. Monteiro, Mário J. P. F. G. Monteiro, Margarida S. Cunha, Margarida S. Cunha, Sérgio G. Sousa, Sérgio G. Sousa   +9 more
doaj   +1 more source

Measuring mean densities of delta Scuti stars with asteroseismology. Theoretical properties of large separations using TOUCAN

, 2014
We aim at studying the theoretical properties of the regular spacings found in the oscillation spectra of delta Scuti stars. We performed a multi-variable analysis covering a wide range of stellar structure and seismic properties and model parameters ...
A. García Hernández, A. Moya, Antoci, Baglin, Breger, Breger, Breger, C. Rodrigo, Catala, Christensen-Dalsgaard, Dupret, Dziembowski, Dziembowski, E. Solano, García Hernández, García Hernández, Gilliland, Gough, Goupil, Handler, J. C. Suárez, J. R. Rodón, Jackson, Kallinger, Kjeldsen, Lebreton, Lignières, Lignières, MacGregor, Mantegazza, Matthews, Metcalfe, Morel, Morel, Moya, Moya, Moya, Moya, Moya, Paxton, Perryman, Poretti, Poretti, Poretti, R. Garrido, Reese, Reese, Reese, Reese, Soufi, Suárez, Suárez, Suárez, Suárez, Tassoul, Tingley, Uytterhoeven, Uytterhoeven, Walker, Winn, Wright, Zahn, Zwintz   +62 more
core   +1 more source

NONLINEAR ASTEROSEISMOLOGY OF RR LYRAE [PDF]

The Astrophysical Journal, 2012
The observations of the Kepler space telescope revealed that fundamental-mode RR Lyrae stars may show various radial overtones. The presence of multiple radial modes may allow us to conduct nonlinear asteroseismology: comparison of mode amplitudes and frequency shifts between observations and models.
?Molnár, L.; Kolláth, Z.; Szabó, R.; Bryson, S.; Kolenberg, K.; Mullally, F.; Thompson, S. E.   +7 more
openaire   +3 more sources

Computational Asteroseismology [PDF]

Publications of the Astronomical Society of the Pacific, 2001
Ph.D. thesis. Summary to appear in PASP (October 2001). HTML version and full-resolution figures available at http://whitedwarf.org/metcalfe/
openaire   +2 more sources

Asteroseismology of Compact Stars

Universe
Compact stars have been perceived as natural laboratories of matter at an extremely high density. The uncertainties of the equation of state (EOS) of matter can be constrained by observing compact stars.
Hong-Bo Li, Yong Gao, Lijing Shao, Ren-Xin Xu   +3 more
doaj   +1 more source

Seismic Signatures of Stellar Magnetic Activity—What Can We Expect From TESS?

Frontiers in Astronomy and Space Sciences, 2019
Asteroseismic methods offer a means to investigate stellar activity and activity cycles as well as to identify those properties of stars which are crucial for the operation of stellar dynamos.
René Kiefer, Anne-Marie Broomhall, Warrick H. Ball, Warrick H. Ball   +3 more
doaj   +1 more source

Asteroseismology of stars on the upper main sequence

, 2012
I review the properties of pulsators located on the upper main sequence in the HR diagram and discuss asteroseismic inferences on the internal structure of stars of spectral type A and B.
Lenz, P.
core   +1 more source

A continuous population of variable stars up to about 1.5 mag above the horizontal branch?

, 2003
Increasing samples of pulsating variable stars populating the classical instability strip from the horizontal branch to a few magnitudes brighter are being found in several Local Group galaxies, irrespective of the galaxy morphological type.
Baldacci, L., Clementini, G., Held, E. V., Marconi, M., Rizzi, L.   +4 more
core   +1 more source