Planetary companion candidates around the K giant stars 42 Dra and HD 139357 (2009)
Doellinger, M. P., Hatzes, A. P., Pasquini, L., Guenther, E. W., Hartmann, M., Girardi, L.
For the past 3 years we have been monitoring 62 K giant stars using precise stellar radial velocity (RV) measurements with the 2m Alfred Jensch telescope of the Th\"uringer Landessternwarte...
Testing planet formation theories with Giant stars (2008)
Pasquini, Luca, Doellinger, M. P., Hatzes, A., Setiawan, J., Girardi, L., Da Silva, L., ...
Planet searches around evolved giant stars are bringing new insights to planet formation theories by virtue of the broader stellar mass range of the host stars compared to the solar-type stars that...
Evolved stars hint to an external origin of enhanced metallicity in planet-hosting stars (2007)
Pasquini, L., Doellinger, M. P., Weiss, A., Girardi, L., Chavero, C., Hatzes, A. P., ...
Exo-planets are preferentially found around high metallicity main sequence stars. We aim at investigating whether evolved stars share this property, and what this tells about planet formation....
Discovery of a planet around the K giant star 4 UMa (2007)
Doellinger, M. P., Hatzes, A. P., Pasquini, L., Guenther, E. W., Hartmann, M., Girardi, L., ...
Context: For the past 3 years we have been monitoring a sample of 62 K giant stars using precise stellar radial velocity measurements taken at the Thueringer Landessternwarte Tautenburg. Aims: To...
A substellar companion around the intermediate-mass giant star HD 11977 (2005)
Setiawan, J., Rodmann, J., Da Silva, L., Hatzes, A. P., Pasquini, L., ...
We report the discovery of a substellar companion to the intermediate-mass star HD 11977 (G5 III). Radial velocities of this star have been monitored for five years with FEROS at the 1.52-m ESO and...