Browsing Articles by Subject "RR Lyrae stars"

Now showing items 1-6 of 6

MOST light-curve analysis of the [gamma] Doradus pulsator HR8799, showing resonances and amplitude variations

Sodor, A.; Chene, A. -N.; De Cat, P.; Bognar, Zs.; Wright, D. J.; Marois, C.; Walker, G. A. H.; Matthews, J. M.; Kallinger, T.; Rowe, J. F.; Guenther, David B. (EDP Sciences, 2014-08)

Context. The central star of the HR 8799 system is a γ Doradus-type pulsator. The system harbours four planetary-mass companions detected by direct imaging, and is a good solar system analogue. The masses of the ...
MOST photometry of the RRd Lyrae variable AQ Leo: two radial modes, 32 combination frequencies and beyond

Guenther, David B.; Gruberbauer, Michael; Kolenberg, Katrien; Rowe, Jason F.; Huber, Daniel; Matthews, Jaymie M.; Reegen, Piet; Kuschnig, Rainer; Cameron, Chris; Kallinger, T. (Oxford University Press, 2007-08)

Highly precise and nearly uninterrupted optical photometry of the RR Lyrae star AQ Leo was obtained with the MOST (Microvariability and Oscillations of Stars) satellite over 34.4 d in 2005 February–March. AQ Leo was the ...
Radial stellar pulsation and three-dimensional convection. I. Numerical methods and adiabatic test cases

Deupree, Robert G. (Robert Gaston), 1946-; Geroux, Chris M. (American Astronomical Society, 2011-04)

We are developing a three-dimensional radiation hydrodynamics code to simulate the interaction of convection and pulsation in classical variable stars. One key goal is the ability to carry these simulations to full amplitude ...
Radial stellar pulsation and three-dimensional convection. II. Two-dimensional convection in full amplitude radial pulsation

Deupree, Robert G. (Robert Gaston), 1946-; Geroux, Chris M. (American Astronomical SocietyIOP Science, 2013-07-10)

We have developed a three-dimensional radiation hydrodynamics code to simulate the interaction of convection and radial pulsation in classical variable stars. One key goal is the ability to carry these simulations to full ...
Radial stellar pulsation and three-dimensional convection. III. Comparison of two-dimensional and three-dimensional convection effects on radial pulsation

Geroux, Christopher M.; Deupree, Robert G. (Robert Gaston), 1946- (American Physical Society, 2014-03-10)

We have developed a multi-dimensional radiation hydrodynamics code to simulate the interaction of radial stellar pulsation and convection for full-amplitude pulsating models. Convection is computed using large eddy ...
Radial stellar pulsation and three-dimensional convection. IV. Full amplitude three-dimensional solutions

Geroux, Christopher M.; Deupree, Robert G. (Robert Gaston), 1946- (American Astronomical Society, 2015-02-10)

Three-dimensional hydrodynamic simulations of full amplitude RR Lyrae stars have been computed for several models across the instability strip. The three-dimensional nature of the calculations allows convection to be treated ...