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Kepler Asteroseismology Program: Introduction and First Results
Ronald L. Gilliland, T. M. Brown, J. Christensen-Dalsgaard +32
Asteroseismology involves probing the interiors of stars and quantifying their global properties, such as radius and age, through observationsof normal modes of oscillation. The te…
Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
Dennis Stello, Sarbani Basu, Hans Bruntt +49
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance and initial chemical composition allows strong tests of the theor…
Asteroseismic modelling of the solar-like star Hydri
G. Doğan, I. M. Brandão, T. R. Bedding +3
We present the results of modelling the subgiant star Hydri using the seismic observational constraints. We have computed several grids of stellar evolutionary tracks using Aar…
The radius and effective temperature of the binary Ap star beta CrB from CHARA/FLUOR and VLT/NACO observations
H. Bruntt, P. Kervella, A. Merand +14
The prospects for using asteroseismology of rapidly oscillating Ap (roAp) stars are hampered by the large uncertainty in fundamental stellar parameters. Results in the literature f…
Automated extraction of oscillation parameters for Kepler observations of solar-type stars
Daniel Huber, Dennis Stello, Timothy R. Bedding +4
The recent launch of the Kepler space telescope brings the opportunity to study oscillations systematically in large numbers of solar-like stars. In the framework of the asteroFLAG…
Testing Newtonian Gravity with AAOmega: Mass-To-Light Profiles and Metallicity Calibrations From 47 Tuc and M55
Richard R. Lane, László L. Kiss, Geraint F. Lewis +4
Globular clusters are an important test bed for Newtonian gravity in the weak-acceleration regime, which is vital to our understanding of the nature of the gravitational interactio…
The relation between and for solar-like oscillations
D. Stello, W. J. Chaplin, S. Basu +2
Establishing relations between global stellar parameters and asteroseismic quantities can help improve our understanding of stellar astrophysics and facilitate the interpretation o…
Long-term photometry and periods for 261 nearby pulsating M giants
V. Tabur, T. R. Bedding, L. L. Kiss +3
We present the results of a 5.5-year CCD photometric campaign that monitored 261 bright, southern, semi-regular variables with relatively precise Hipparcos parallaxes. The data are…
Testing Newtonian Gravity with AAOmega: Mass-to-Light Profiles of Four Globular Clusters
Richard R. Lane, László L. Kiss, Geraint F. Lewis +4
Testing Newtonian gravity in the weak-acceleration regime is vital to our understanding of the nature of the gravitational interaction. It has recently been claimed that the veloci…
Radius determination of solar-type stars using asteroseismology: What to expect from the Kepler mission
D. Stello, W. J. Chaplin, H. Bruntt +22
For distant stars, as observed by the NASA Kepler satellite, parallax information is currently of fairly low quality and is not complete. This limits the precision with which the a…
The Science Case for PILOT III: the Nearby Universe
J. S. Lawrence, M. C. B. Ashley, J. Bailey +20
PILOT (the Pathfinder for an International Large Optical Telescope is a proposed 2.5 m optical/infrared telescope to be located at DomeC on the Antarctic plateau. The atmospheric c…
The Science Case for PILOT I: Summary and Overview
J. S. Lawrence, M. C. B. Ashley, J. Bailey +40
PILOT (the Pathfinder for an International Large Optical Telescope) is a proposed 2.5 m optical/infrared telescope to be located at Dome C on the Antarctic plateau. Conditions at D…
Asteroseismic analysis of the roAp star alpha Circini: 84 days of high-precision photometry from the WIRE satellite
H. Bruntt, D. W. Kurtz, M. S. Cunha +8
We present a detailed study of the pulsation of alpha Circini, the brightest of the rapidly oscillating Ap stars. We have obtained 84 days of high-precision photometry from four ru…
CHARA/MIRC interferometry of red supergiants: diameters, effective temperatures and surface features
L. L. Kiss, J. D. Monnier, T. R. Bedding +4
We have obtained H-band interferometric observations of three galactic red supergiant stars using the MIRC instrument on the CHARA array. The targets include AZ Cyg, a field RSG an…
Optimizing Weights for the Detection of Stellar Oscillations: Application to alpha Centauri A and B, and beta Hydri
T. Arentoft, H. Kjeldsen, T. R. Bedding
We have recently developed a new method for adjusting weights to minimize sidelobes in the spectral window. Here we show the results of applying this method to published two-site v…