187 citations · 407 across the 13 of their papers we have counts for
13 papers
SARG: the high resolution spectrograph
Gratton R., Bonanno G., Bruno P. +8
SARG is the high resolution spectrograph of TNG. It has been in operation since late spring 2000. SARG is a cross dispersed echelle spectrograph; it offers both single object and l…
First detection of the Crab Nebula at TeV energies with a Cherenkov telescope in a dual-mirror Schwarzschild-Couder configuration: the ASTRI-Horn telescope
S. Lombardi, O. Catalano, S. Scuderi +89
We report on the first detection of very high-energy (VHE) gamma-ray emission from the Crab Nebula by a Cherenkov telescope in dual-mirror Schwarzschild-Couder (SC) configuration.…
A 3.9 km baseline intensity interferometry photon counting experiment
Giampiero Naletto, Luca Zampieri, Cesare Barbieri +6
In the last years we have operated two very similar ultrafast photon counting photometers (Iqueye and Aqueye+) on different telescopes. The absolute time accuracy in time tagging t…
High-Contrast study of the candidate planets and protoplanetary disk around HD~100546
E. Sissa, R. Gratton, A. Garufi +62
The nearby Herbig Be star HD100546 is known to be a laboratory for the study of protoplanets and their relation with the circumstellar disk that is carved by at least 2 gaps. We ob…
SHARK-NIR, the coronagraphic camera for LBT, moving toward construction
Jacopo Farinato, Francesca Bacciotti, Carlo Baffa +37
SHARK-NIR is one of the two coronagraphic instruments proposed for the Large Binocular Telescope. Together with SHARK-VIS (performing coronagraphic imaging in the visible domain),…
New spectro-photometric characterization of the substellar object HR 2562 B using SPHERE
D. Mesa, J. -L. Baudino, B. Charnay +32
HR2562 is an F5V star located at ~33 pc from the Sun hosting a substellar companion that was discovered using the GPI instrument. The main objective of the present paper is to prov…
Orbiting a binary: SPHERE characterisation of the HD 284149 system
Mariangela Bonavita, V. D'Orazi, D. Mesa +52
In this paper we present the results of the SPHERE observation of the HD 284149 system, aimed at a more detailed characterisation of both the primary and its brown dwarf companion.…
Upper limits for Mass and Radius of objects around Proxima Cen from SPHERE/VLT
D. Mesa, A. Zurlo, J. Milli +36
The recent discovery of an earth-like planet around Proxima Centauri has drawn much attention to this star and its environment. We performed a series of observations of Proxima Cen…
Intensity Interferometry with Aqueye+ and Iqueye in Asiago
L. Zampieri, G. Naletto, C. Barbieri +6
Since a number of years our group is engaged in the design, construction and operation of instruments with very high time resolution in the optical band for applications to Quantum…
Aqueye+: a new ultrafast single photon counter for optical high time resolution astrophysics
L. Zampieri, G. Naletto, C. Barbieri +7
Aqueye+ is a new ultrafast optical single photon counter, based on single photon avalanche photodiodes (SPAD) and a 4-fold split-pupil concept. It is a completely revisited version…
A facility to evaluate the focusing performance of mirrors for Cherenkov Telescopes
Rodolfo Canestrari, Enrico Giro, Giacomo Bonnoli +6
Cherenkov Telescopes are equipped with optical dishes of large diameter -- in general based on segmented mirrors -- with typical angular resolution of a few arc-minutes. To evaluat…
Discovery of a bipolar and highly variable mass outflow from the symbiotic binary StHa 190
U. Munari, T. Tomov, B. F. Yudin +15
A highly and rapidly variable bipolar mass outflow from StHa 190 has been discovered, the first time in a yellow symbiotic star. Permitted emission lines are flanked by symmetrical…
Metal Abundances of Red Clump Stars in Open Clusters: I. NGC 6819
A. Bragaglia, E. Carretta, R. G. Gratton +10
We present an analysis of high dispersion spectra (R~40000) of three red clump stars in the old open cluster NGC 6819. The spectra were obtained with SARG, the high dispersion spec…