PHL 932: when is a planetary nebula not a planetary nebula? (2009)
Frew, David J., Madsen, Greg J., O'Toole, Simon J., Parker, Quentin A.
The emission nebula around the subdwarf B (sdB) star PHL 932 is currently classified as a planetary nebula (PN) in the literature. Based on a large body of multi-wavelength data, both new and...
Beyond the iron peak: r- and s-process elemental abundances in stars with planets (2008)
Bond, J. C., Lauretta, D. S., Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., ...
[Abstract]: We present elemental abundances of 118 stars (28 of which are known extrasolar planetary host stars) observed as part of the Anglo-Australian Planet Search. Abundances of O, Mg, Cr, Y,...
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...
Beyond the iron peak: r- and s-process elemental abundances in stars with planets (2008)
Bond, J. C., Lauretta, D. S., Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., ...
[Abstract]: We present elemental abundances of 118 stars (28 of which are known extrasolar planetary host stars) observed as part of the Anglo-Australian Planet Search. Abundances of O, Mg, Cr, Y,...
Beyond the iron peak: r- and s-process elemental abundances in stars with planets (2008)
Bond, J. C., Lauretta, D. S., Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., ...
[Abstract]: We present elemental abundances of 118 stars (28 of which are known extrasolar planetary host stars) observed as part of the Anglo-Australian Planet Search. Abundances of O, Mg, Cr, Y,...
Timothy R. Bedding, R. Paul Butler, Hans Kjeldsen, Ivan K. Baldry, Simon J. O'toole, Christopher G. Tinney, ...
We have made a clear detection of excess power, providing strong evidence for solar-like oscillations in the G2 subgiant fi Hyi. We observed this star over five nights with the UCLES echelle...
New planets around three G Dwarfs (2007)
O'Toole, Simon J., Butler, R. Paul, Tinney, C. G., Jones, Hugh R. A., Marcy, Geoffrey W., Carter, Brad D., ...
[Abstract]: Doppler velocity measurements from the Anglo-Australian Planet Search re- veal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These...
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...
New Planets around Three G Dwarfs (2007)
O'Toole, Simon J., Butler, R. Paul, Tinney, C. G., Jones, Hugh R. A., Marcy, Geoffrey W., Carter, Brad, ...
Doppler velocity measurements from the Anglo-Australian Planet Search reveal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These stars are all...
New planets around three G Dwarfs (2007)
O'Toole, Simon J., Butler, R. Paul, Tinney, C. G., Jones, Hugh R. A., Marcy, Geoffrey W., Carter, Brad D., ...
[Abstract]: Doppler velocity measurements from the Anglo-Australian Planet Search re- veal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These...
New planets around three G Dwarfs (2007)
O'Toole, Simon J., Butler, R. Paul, Tinney, C. G., Jones, Hugh R. A., Marcy, Geoffrey W., Carter, Brad D., ...
[Abstract]: Doppler velocity measurements from the Anglo-Australian Planet Search re- veal planetary mass companions to HD23127, HD159868, and a possible second planetary companion to HD154857. These...
The 2:1 resonant exoplanetary system orbiting HD735261 (2006)
Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., Laughlin, Gregory, Carter, Brad D., ...
[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526. This second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the previously known...
The 2:1 resonant exoplanetary system orbiting HD735261 (2006)
Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., Laughlin, Gregory, Carter, Brad D., ...
[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526. This second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the previously known...
The 2:1 resonant exoplanetary system orbiting HD 73526 (2006)
Tinney, C. G., Butler, R. Paul, Marcy, Geoffrey W., Jones, Hugh R. A., Laughlin, Gregory, Carter, Brad D., ...
[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526. This second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the previously known...
Discovery of magnetic fields in central stars of planetary nebulae (2005)
Jordan, Stefan, Werner, Klaus, O'Toole, Simon J.
For the first time we have directly detected magnetic fields in central stars of planetary nebulae by means of spectro-polarimetry with FORS1 at the VLT. In all four objects of our sample we found...
Oscillation frequencies and mode lifetimes in alpha Centauri A (2004)
Bedding, Timothy R., Kjeldsen, Hans, Butler, R. Paul, McCarthy, Chris, Marcy, Geoffrey W., O'Toole, Simon J., ...
We analyse our recently-published velocity measurements of alpha Cen A (Butler et al. 2004). After adjusting the weights on a night-by-night basis in order to optimize the window function to minimize...
Ultra-high-precision velocity measurements of oscillations in alpha Cen A (2003)
Butler, R. Paul, Bedding, Timothy R., Kjeldsen, Hans, McCarthy, Chris, O'Toole, Simon J., Tinney, Christopher G., ...
We have made differential radial velocity measurements of the star alpha Cen A using two spectrographs, UVES and UCLES, both with iodine absorption cells for wavelength referencing. Stellar...
Evidence for solar-like oscillations in beta Hydri (2000)
Bedding, Timothy R., Butler, R. Paul, Kjeldsen, Hans, Baldry, Ivan K., O'Toole, Simon J., Tinney, Christopher G., ...
We have made a clear detection of excess power, providing strong evidence for solar-like oscillations in the G2 subgiant beta Hyi. We observed this star over five nights with the UCLES echelle...
Time-series Spectroscopy of EC14026 Stars: Preliminary Results (1999)
O'Toole, Simon J., Teixeira, Teresa C., Bedding, Timothy R., Kjeldsen, Hans
We have obtained time-series spectra for the pulsating hot subdwarf (sdB) PG1605+072. Previous time-series photometry of this star has shown maximum amplitude variations of about 0.1 mag and at least...