Arentoft, Torben, Kjeldsen, Hans, Bedding, Timothy R., Bazot, Michael, Christensen-Dalsgaard, Joergen, Dall, Thomas H., ...
We have carried out a multi-site campaign to measure oscillations in the F5 star Procyon A. We obtained high-precision velocity observations over more than three weeks with eleven telescopes, with...
Correcting stellar oscillation frequencies for near-surface effects (2008)
Kjeldsen, Hans, Bedding, Timothy R., Christensen-Dalsgaard, Joergen
In helioseismology, there is a well-known offset between observed and computed oscillation frequencies. This offset is known to arise from improper modeling of the near-surface layers of the Sun, and...
Kjeldsen, Hans, Bedding, Timothy R., Christensen-Dalsgaard, Joergen
Oscillations occur in stars of most masses and essentially all stages of evolution. Asteroseismology is the study of the frequencies and other properties of stellar oscillations, from which we can...
Lebreton, Yveline, Montalban, Josefina, Christensen-Dalsgaard, Joergen, Roxburgh, Ian W., Weiss, Achim
We compare stellar models produced by different stellar evolution codes for the CoRoT/ESTA project, comparing their global quantities, their physical structure, and their oscillation properties. We...
Solar-like oscillations in the G2 subgiant beta Hydri from dual-site observations (2007)
Bedding, Timothy R., Kjeldsen, Hans, Arentoft, Torben, Bouchy, Francois, Brandbyge, Jacob, Brewer, Brendon J., ...
We have observed oscillations in the nearby G2 subgiant star beta Hyi using high-precision velocity observations obtained over more than a week with the HARPS and UCLES spectrographs. The oscillation...
Solar-like oscillations in alpha Centauri B (2005)
Kjeldsen, Hans, Bedding, Timothy R., Butler, R. Paul, Christensen-Dalsgaard, Joergen, Kiss, Laszlo L., McCarthy, Chris, ...
We have made velocity observations of the star alpha Cen B from two sites, allowing us to identify 37 oscillation modes with l=0-3. Fitting to these modes gives the large and small frequency...
Hipparcos parallaxes for eta Boo and kappa_2 Boo: two successes for asteroseismology (1997)
Bedding, Timothy R., Kjeldsen, Hans, Christensen-Dalsgaard, Joergen
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 with oscillation...