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A search for solar-like oscillations in alpha Cen A
Timothy R. Bedding, Hans Kjeldsen, S. Frandsen +1
We have been using a new method to search for solar-like oscillations that involves measuring temperature changes via their effect on the equivalent widths of the Balmer hydrogen l…
Solar-like oscillations: the search goes on
Timothy R. Bedding, Hans Kjeldsen
Despite numerous attempts and many hours of telescope time, there has so far been no confirmed detection of solar-like oscillations in any star except the Sun. We review recent eff…
Hipparcos parallaxes for eta Boo and kappa_2 Boo: two successes for asteroseismology
Timothy R. Bedding, Hans Kjeldsen, Joergen Christensen-Dalsgaard
The release of the Hipparcos catalogue provides an opportunity to check results from asteroseismology. Here we show that Hipparcos parallaxes for two stars are in good agreement wi…
Stellar populations from adaptive optics observations: four test cases
T. R. Bedding, D. Minniti, F. Courbin +1
We describe a first attempt to apply adaptive optics to the study of resolved stellar populations in galaxies. Advantages over traditional approaches are (i) improved spatial resol…
Observing solar-like oscillations
Hans Kjeldsen, Timothy R. Bedding
We review techniques for measuring stellar oscillations in solar-type stars. Despite great efforts, no unambiguous detections have been made. A new method, based on monitoring the…
The angular diameter of R Doradus: a nearby Mira-like star
T. R. Bedding, A. A. Zijlstra, O. von der Luhe +4
We find the angular diameter of R Doradus to be 57 +/- 5 mas, exceeding that of Betelgeuse and implying that R Dor is larger in apparent size than every star except the Sun. R Dor…