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Planets of young stars
E. W. Guenther, E. Esposito
Since the first massive planet in a short period orbit was discovered, the question arised how such an object could have formed. There are basically two formation scenarios: migrat…
The Extrasolar Planet epsilon Eridani b - Orbit and Mass
G. Fritz Benedict, Barbara E. McArthur, George Gatewood +11
Hubble Space Telescope observations of the nearby (3.22 pc), K2 V star epsilon Eridani have been combined with ground-based astrometric and radial velocity data to determine the ma…
Hot Jupiters and Hot Spots: The Short- and Long-term Chromospheric Activity on Stars with Giant Planets
E. Shkolnik, G. A. H. Walker, D. A. Bohlender +2
We monitored the chromospheric activity in the Ca II H & K lines of 13 solar-type stars (including the Sun); 8 of them over three years at the CFHT and 5 in a single run at the VLT…
The low-level radial velocity variability in Barnard's star (=GJ 699). Secular acceleration, indications for convective redshift, and planet mass limits
M. Kuerster, M. Endl, F. Rouesnel +6
We report results from 2 1/2 yr of high precision radial velocity (RV) monitoring of Barnard's star. The high RV measurement precision of the VLT-UT2+UVES of 2.65 m/s made the foll…
The planet search program at the ESO Coude Echelle spectrometer. III. The complete Long Camera survey results
M. Endl, M. Kuerster, S. Els +4
We present the complete results of the planet search program carried out at the ESO Coude Echelle Spectrometer (CES) on La Silla, using the Long Camera from Nov. 1992 to April 1998…
Detection of differential rotation in psi Cap with profile analysis
A. Reiners, J. H. M. M. Schmitt, M. Kuerster
We report detection of differential rotation on the F5 dwarf psi Cap using line profile analysis. The Fourier transform of both FeI lambda 5775 and SiI lambda 5772 are used to obta…
Evidence for a Long-period Planet Orbiting Epsilon Eridani
Artie P. Hatzes, William D. Cochran, Barbara McArthur +10
High precision radial velocity (RV) measurements spanning the years 1980.8--2000.0 are presented for the nearby (3.22 pc) K2 V star Eri. These data, which represent a combinati…
Precise radial velocities of Proxima Centauri
M. Kürster, A. P. Hatzes, W. D. Cochran +3
We present differential radial velocity measurements of Proxima Centauri collected over 4 years with the ESO CES with a mean precision of . We find no evidence of a per…