Planetary companions around the K giant stars 11 UMi and HD 32518 (2009)
Döllinger, M. P., Hatzes, A. P., Pasquini, L., Guenther, E. W., Hartmann, M.
11 UMi and HD 32518 belong to a sample of 62 K giant stars that has been observed since February 2004 using the 2m Alfred Jensch telescope of the Th\"uringer Landessternwarte (TLS) to measure precise...
Planets around active stars (2008)
Setiwan, J., Weise, P., Henning, Th., Hatzes, A. P., Pasquini, L., Da Silva, L., ...
Testing planet formation theories with giant stars (2008)
Pasquini, Luca, Döllinger, M. P., Hatzes, A., Setiawan, J., Girardi, L., Da Silva, L., ...
Planets around active stars (2008)
Setiawan, J., Weise, P., Henning, Th, Hatzes, A. P., Pasquini, L., Silva, L. Da, ...
We present the results of radial velocity measurements of two samples of active stars. The first sample contains field G and K giants across the Red Giant Branch, whereas the second sample consists...
Testing planet formation theories with giant stars (2008)
Pasquini, Luca, Döllinger, 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...
Discovery of a planet around the K giant star 4 Ursae Majoris (2007)
Döllinger, M. P., Hatzes, A. P., Pasquini, L., Guenther, E. W., Hartmann, M., Girardi, L., ...
Evolved stars suggest an external origin of the enhanced metallicity in planet-hosting stars (2007)
Pasquini, L., Döllinger, M. P., Weiss, A., Girardi, L., Chavero, C., Hatzes, A. P., ...
Evolved stars suggest an external origin of the enhanced metallicity in planet-hosting stars (2007)
Pasquini, L., Döllinger, M. P., Weiss, A., Girardi, L., Chavero, C., Hatzes, A. P., ...
Aims. Exo-planets are preferentially found around high metallicity main sequence stars. We investigate whether evolved stars share this property, and its implications for planet formation. Methods:...
Radial velocity variations of G and K giants (2006)
Döllinger, M. P., Pasquini, L., Hatzes, A., Weiss, A., Setiawan, J., Da Silva, L., ...
Basic physical parameters of a selected sample of evolved stars (2006)
Da Silva, L., Girardi, L., Pasquini, L., Setiawan, J., De Medeiros, J. R., ...
Basic physical parameters of a selected sample of evolved stars (2006)
Da Silva, L., Girardi, L., Pasquini, L., Setiawan, J., De Medeiros, J. R., ...
We present the detailed spectroscopic analysis of 72 evolved stars, which were previously studied for accurate radial velocity variations. Using one Hyades giant and another well studied star as the...
Asteroseismology of K Giants (2006)
Di Mauro, M. P., Cardini, D., D'Antona, F., Weiss, A., Döllinger, M. P., Pasquini, L., ...
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...