Using globular clusters to test gravity in the weak acceleration regime (2007)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto, Carraro, Giovanni
We report on the results from an ongoing program aimed at testing Newton's law of gravity in the low acceleration regime using globular clusters. It is shown that all clusters studied so far do...
Using globular clusters to test gravity in the weak acceleration regime: NGC 7099 (2006)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto, Carraro, Giovanni
A test of Newton's law of gravity in the low acceleration regime using globular clusters is presented. New results for the core collapsed globular cluster NGC 7099 are given. The run of the...
BVI photometry of the very old open cluster Berkeley 17 (2006)
Bragaglia, Angela, Tosi, Monica, Andreuzzi, Gloria, Marconi, Gianni
We have obtained BVI CCD imaging of Berkeley 17, an anticentre open cluster that competes with NGC 6791 as the oldest known open cluster. Using the synthetic colour magnitude diagrams (CMD) technique...
Globular Clusters as a Test for Gravity in the Weak Acceleration Regime (2006)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto
Non-baryonic Dark Matter (DM) appears in galaxies and other cosmic structures when and only when the acceleration of gravity, as computed considering only baryons, goes below a well defined value...
Israel, GianLuca, Covino, Stefano, Mignani, Roberto, Stella, Luigi, Marconi, Gianni, Testa, Vincenzo, ...
The sky region including the Chandra position of SGR 1806-20 was monitored in the IR band during 2004, following its increased high energy bursting activity. Observations were performed using...
Using globular clusters to test gravity in the weak acceleration regime: NGC 6171 (2004)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto
As part of an ongoing program to test Newton's law of gravity in the low acceleration regime using globular clusters, we present here new results obtained for NGC 6171. Combining VLT spectra for 107...
UBVI photometry of the intermediate age open cluster NGC 6939 (2003)
Andreuzzi, Gloria, Bragaglia, Angela, Tosi, Monica, Marconi, Gianni
We present CCD UBVI photometry of the nearby, intermediate age open cluster NGC 6939. Using the synthetic Colour - Magnitude Diagrams technique we estimate the following parameters: age between 1.3...
Unveiling the multi-wavelength phenomenology of Anomalous X-ray Pulsars (2003)
Israel, GianLuca, Stella, Luigi, Covino, Stefano, Campana, Sergio, Angelini, Lorella, Mignani, Roberto, ...
During 2002-2003 the number of IR-identified counterparts to the Anomalous X-ray Pulsars (AXPs) has grown to four (4U0142+614, 2E2259+584, 1E 1048-59 and 1RXS J170849-400910) out of the six assessed...
Using Globular Clusters to Test Newton?s Law of Gravityy (2003)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto
New measurements of the velocity dispersion of the globular cluster omega Centauri allow to trace its gravitational potential down to an acceleration of 8e-9 cm/s/s. It is found that the dispersion...
Using globular clusters to test gravity in the weak acceleration regime (2003)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto
We have carried out a study of the velocity dispersion of the stars in the outskirts of the globular cluster Omega Centauri, finding that the velocity dispersion remains constant at large radii...
Unveiling the nature of the 321s Orbital Period X-ray source RX J0806.3+1527 (2003)
Israel, GianLuca, Stella, Luigi, Covino, Stefano, Campana, Sergio, Marconi, Gianni, Mauche, Christopher W., ...
A nearly simultaneous X-ray/optical (Chandra and VLT) observational campaign of RX J0806.3+1527 has been carried out during November 2001. These observations allowed us to phase the X-ray and optical...
A Test of Newton's Law of Gravity in the Weak Acceleration Regime (2002)
Scarpa, Riccardo, Marconi, Gianni, Gilmozzi, Roberto
A pilot experiment suitable to test Newton's law of gravity down to the regime of acceleration typical of galaxies has been carried out in Omega Centauri. Stars in the extreme periphery of this...
Kalirai, Jasonjot Singh, Ventura, Paolo, Richer, Harvey B., Fahlman, Gregory G., Durrell, Patrick R., D'Antona, Francesca, ...
We present deep CCD photometry of the very rich, intermediate aged (similar to the Hyades) open star cluster NGC 2099 (M37). The V, B-V color-magnitude diagram (CMD) for the cluster shows an...
The CFHT Open Star Cluster Survey I -- Cluster Selection and Data Reduction (2001)
Kalirai, Jasonjot Singh, Richer, Harvey B., Fahlman, Gregory G., Cuillandre, Jean-Charles, Ventura, Paolo, D'Antona, Francesca, ...
We present this paper in conjuction with the following as the first results in the CFHT Open Star Cluster Survey. This survey is a large BVR imaging data set of 19 open star clusters in our Galaxy....
Kalirai, Jasonjot Singh, Richer, Harvey B., Fahlman, Gregory G., Cuillandre, Jean-Charles, Ventura, Paolo, D'Antona, Francesca, ...
We present analysis of deep CCD photometry for the very rich, old open star cluster NGC 6819. These CFH12K data results represent the first of nineteen open star clusters which were imaged as a part...
Antlia: an outskirt Local Group Galaxy (2000)
Castellani, Marco, Bono, Giuseppe, Cassisi, Santi, Marconi, Gianni, Piersimoni, Anna
Deep (I,V-I) and (I,B-I) color-magnitude diagrams (CMDs) of the Antlia dwarf galaxy, based on Science Verification (SV) data collected with the FORS I camera on the ESO Very Large Telescope (VLT) are...
The Tucana dwarf galaxy (1995)
Castellani, Marco, Marconi, Gianni, Buonanno, Roberto
Deep CCD photometry (NTT, HST data) for the dwarf galaxy in Tucana is presented, down to V=27.5. Distance modulus and metallicity are derived, together with an estimate of the age of the galaxy.
Impact of the Introduction of an e-CRM Solution in the Feed Industry: The Case of Progeo-Mangimi
Zanasi, Cesare, Marconi, Gianni
Feed industry is very demanding in terms of logistics. This activity implies supplying, processing and, most of all, distributing perishable products (raw materials and feed), to a very large number...