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107 papers · 1 filter
Modelling solar-like variability for the detection of Earth-like planetary transits. II) Performance of the three-spot modelling, harmonic function fitting, iterative non-linear filtering and sliding boxcar filtering
A. S. Bonomo, S. Aigrain, P. Bordé +1
We present a comparison of four methods of filtering solar-like variability to increase the efficiency of detection of Earth-like planetary transits by means of box-shaped transit…
Magnetic activity in the photosphere of CoRoT-Exo-2a. Active longitudes and short-term spot cycle in a young Sun-like star
A. F. Lanza, I. Pagano, G. Leto +18
The space experiment CoRoT has recently detected transits by a hot Jupiter across the disc of an active G7V star (CoRoT-Exo-2a) that can be considered as a good proxy for the Sun a…
First results from the NEMO Phase 1 experiment
Isabella Amore
The NEMO prototype detector, called "NEMO Phase-1", has been successfully operated at 2000 m depth from December 2006 to May 2007. The apparatus comprises a \emph{Junction Box} and…
HINODE Observations of Chromospheric Brightenings in the Ca II H Line during small-scale Flux Emergence Events
S. L. Guglielmino, F. Zuccarello, P. Romano +1
\ion{Ca}{2} H emission is a well-known indicator of magnetic activity in the Sun and other stars. It is also viewed as an important signature of chromospheric heating. However, the…
CCD and photon-counting photometric observations of asteroids carried out at Padova and Catania observatories
Davide Gandolfi, Massimo Cigna, Daniele Fulvio +1
We present the results of observational campaigns of asteroids performed at Asiago Station of Padova Astronomical Observatory and at M.G. Fracastoro Station of Catania Astrophysica…
New triple systems in the RasTyc sample of stellar X-ray sources
A. Klutsch, A. Frasca, P. Guillout +4
During the study of a large set of late-type stellar X-ray sources, we discovered a large fraction of multiple systems. In this paper we investigate the orbital elements and kinema…