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The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system
A. -L. Maire, A. J. Skemer, P. M. Hinz +36
Context. Astrometric monitoring of directly-imaged exoplanets allows the study of their orbital parameters and system architectures. Because most directly-imaged planets have long…
SPOTS: The Search for Planets Orbiting Two Stars. I. Survey description and first observations
Christian Thalmann, Silvano Desidera, Mariangela Bonavita +13
Direct imaging surveys for exoplanets commonly exclude binary stars from their target lists, leaving a large part of the overall planet demography unexplored. To address this gap i…
High contrast imaging at the LBT: the LEECH exoplanet imaging survey
Andrew J. Skemer, Philip Hinz, Simone Esposito +34
In Spring 2013, the LEECH (LBTI Exozodi Exoplanet Common Hunt) survey began its 130-night campaign from the Large Binocular Telescope (LBT) atop Mt Graham, Arizona. This surv…
The GAPS programme with HARPS-N@TNG IV: A planetary system around XO-2S
S. Desidera, A. S. Bonomo, R. U. Claudi +48
We performed an intensive radial velocity monitoring of XO-2S, the wide companion of the transiting planet-host XO-2N, using HARPS-N at TNG in the framework of the GAPS programme.…
A new sub-stellar companion around the young star HD 284149
Mariangela Bonavita, Sebastian Daemgen, Silvano Desidera +3
Even though only a handful of sub-stellar companions have been found via direct imaging, each of these discoveries has had a tremendous impact on our understanding of the star form…
A vigorous activity cycle mimicking a planetary system in HD200466
E. Carolo, S. Desidera, R. Gratton +9
Stellar activity can be a source of radial velocity (RV) noise and can reproduce periodic RV variations similar to those produced by an exoplanet. We present the vigorous activity…