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Coordinated X-ray and Optical observations of Star-Planet Interaction in HD 17156
A. Maggio, I. Pillitteri, G. Scandariato +14
The large number of close-in Jupiter-size exoplanets prompts the question whether star-planet interaction (SPI) effects can be detected. We focused our attention on the system HD 1…
The GAPS Programme with HARPS-N@TNG IX. The multi-planet system KELT-6: detection of the planet KELT-6 c and measurement of the Rossiter-McLaughlin effect for KELT-6 b
M. Damasso, M. Esposito, V. Nascimbeni +39
Aims. For more than 1.5 years we monitored spectroscopically the star KELT-6 (BD+312447), known to host the transiting hot Saturn KELT-6b, because a previously observed long-term t…
The GAPS Programme with HARPS-N at TNG. X. Differential abundances in the XO-2 planet hosting binary
K. Biazzo, R. Gratton, S. Desidera +26
Binary stars hosting exoplanets are a unique laboratory where chemical tagging can be performed to measure with high accuracy the elemental abundances of both stellar components, w…
The GAPS Programme with HARPS-N at TNG. VII. Putting exoplanets in the stellar context: magnetic activity and asteroseismology of Bootis A
F. Borsa, G. Scandariato, M. Rainer +34
Aims. We observed the Boo system with the HARPS-N spectrograph to test a new observational strategy aimed at jointly studying asteroseismology, the planetary orbit, and star-pl…
Stellar parameters of early M dwarfs from ratios of spectral features at optical wavelengths
J. Maldonado, L. Affer, G. Micela +29
(Abridged) Low-mass stars have been recognised as promising targets in the search for rocky, small planets with the potential of supporting life. Doppler search programmes using hi…
The GAPS Programme with HARPS-N@TNG VI: The Curious Case of TrES-4b
A. Sozzetti, A. S. Bonomo, K. Biazzo +38
We revisit the TrES-4 system parameters based on high-precision HARPS-N radial-velocity measurements and new photometric light curves. A combined spectroscopic and photometric anal…
The GAPS Programme with HARPS-N@TNG V. A comprehensive analysis of the XO-2 stellar and planetary systems
M. Damasso, K. Biazzo, A. S. Bonomo +56
XO-2 is the first confirmed wide stellar binary system where the almost twin components XO-2N and XO-2S have planets. This stimulated a detailed characterization study of the stell…