193 citations · 294 across the 7 of their papers we have counts for
7 papers
The ESPRI project: astrometric exoplanet search with PRIMA I. Instrument description and performance of first light observations
J. Sahlmann, T. Henning, D. Queloz +42
The ESPRI project relies on the astrometric capabilities offered by the PRIMA facility of the Very Large Telescope Interferometer for the discovery and study of planetary systems.…
Bayesian analysis of exoplanet and binary orbits
Tim Schulze-Hartung, Ralf Launhardt, Thomas Henning
We introduce BASE (Bayesian astrometric and spectroscopic exoplanet detection and characterisation tool), a novel program for the combined or separate Bayesian analysis of astromet…
Narrow-angle astrometry with PRIMA
J. Sahlmann, D. Ségransan, A. Mérand +16
The Extrasolar Planet Search with PRIMA project (ESPRI) aims at characterising and detecting extrasolar planets by measuring the host star's reflex motion using the narrow-angle as…
A Planetary Companion around a Metal-Poor Star with Extragalactic Origin
J. Setiawan, R. Klement, T. Henning +4
We report the detection of a planetary companion around HIP 13044, a metal-poor star on the red Horizontal Branch. The detection is based on radial velocity observations with FEROS…
Dos and don'ts of reduced chi-squared
Rene Andrae, Tim Schulze-Hartung, Peter Melchior
Reduced chi-squared is a very popular method for model assessment, model comparison, convergence diagnostic, and error estimation in astronomy. In this manuscript, we discuss the p…
A Giant Planet Around a Metal-poor Star of Extragalactic Origin
Johny Setiawan, Rainer J. Klement, Thomas Henning +6
Stars in their late stage of evolution, such as Horizontal Branch stars, are still largely unexplored for planets. We report the detection of a planetary companion around HIP 13044…