Results 51 to 60 of about 507 (173)

Asteroseismology of pulsating DA white dwarfs with fully evolutionary models

EPJ Web of Conferences, 2013
We present a new approach for asteroseismology of DA white dwarfs that consists in the employment of a large set of non-static, physically sound, fully evolutionary models representative of these stars.
Althaus L.G., Córsico A.H., Romero A.D., Bertolami M.M. Miller   +3 more
doaj   +1 more source

Bolometric corrections of stellar oscillation mode amplitudes as observed by the PLATO mission

Astronomy & Astrophysics
Aims. We derive bolometric correction functions for oscillation mode amplitudes observed by the different cameras of the ESA PLATO mission. Such corrections between bolometric (full light) and mission instrument-specific amplitudes enable comparisons to ...
Lund Mikkel N., Ballot Jérôme, Chaplin William J.   +2 more
doaj   +1 more source

Granulation signatures as seen by Kepler short-cadence data

Astronomy & Astrophysics
Context. Stellar granulation arises from near-surface convection and is imprinted in stellar photometric time series. Yet the links between granulation observables and fundamental stellar properties remain underexploited. Aims.
Larsen J. R., Lundkvist M. S., Davies G. R., Nielsen M. B.   +3 more
doaj   +3 more sources

Core-envelope coupling of gravito-inertial waves in pre-main-sequence solar-type stars

Astronomy & Astrophysics
The recent detection of solar equatorial Rossby waves has renewed interest in the study of gravito-inertial waves propagating in the convective envelope of solar-type stars.
Breton S. N., Pezzotti C., Mathis S., Bugnet L., Di Mauro M. P., Joergensen J., Zwintz K., Lanza A. F.   +7 more
doaj   +1 more source

Seismic detection of core magnetic fields in red giants using the gravity offset

Astronomy & Astrophysics
Context. Magnetic fields are known to efficiently redistribute angular momentum in stars. Recently, magnetic fields have been measured in the cores of red giant stars using asteroseismology, and it was shown that core magnetic fields, if unaccounted for,
Villate M., Deheuvels S., Ballot J.
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

Determining the incidence rate of magnetic δ Scuti candidates with CoRoT

Astronomy & Astrophysics
Context.δ Scuti stars are pulsating stars constituting the δ Scuti instability strip in the Hertzsprung-Russell (HR) diagram, which consists of A and F stars of various evolutionary stages.
Paul G., Neiner C., Catala C., Labadie-Bartz J.   +3 more
doaj   +1 more source

Pulsation in Intermediate-Mass Stars

Frontiers in Astronomy and Space Sciences, 2018
A new perspective of pulsation in stars within the δ Scuti instability strip has recently emerged as a result of Kepler observations. The majority of stars within the instability strip do not pulsate and practically all δ Scuti stars contain low ...
Luis A. Balona
doaj   +1 more source

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

The Quest for Pulsating M Dwarf Stars

Frontiers in Astronomy and Space Sciences, 2019
Recent fully non-adiabatic theoretical studies of M dwarf models show that they have the potential to excite radial, and low-order, low-degree non-radial modes, as well as solar-like oscillations, due to models being completely convective or having large
Cristina Rodríguez-López
doaj   +1 more source