Kaur, Ramanpreet, Wijnands, Rudy, Patruno, Alessandro, Testa, Vincenzo, Israel, GianLuca, Degenaar, Nathalie, ...
We present results from our Chandra and XMM-Newton observations of two low-luminosity X-ray pulsators SAX J1324.4-6200 and SAX J1452.8-5949 which have spin-periods of 172 s and 437 s respectively....
Antonelli, L. Angelo, Testa, Vincenzo, Romano, Patrizia, Guetta, Dafne, Torii, Ken'ichi, D'Elia, Valerio, ...
Context. GRB050721 was detected by Swift and promptly followed-up, in the X-ray by Swift itself and, in the optical band, by the VLT operated, for the first time, in rapid response mode. A...
An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova (2007)
Della Valle, Massimo, Chincarini, Guido, Panagia, N., Tagliaferri, Gianpiero, Malesani, Daniele, Testa, Vincenzo, ...
Gamma-ray bursts (GRBs) are short, intense flashes of soft gamma-rays coming from the distant Universe. Long-duration GRBs (those lasting more than ~2 s) are believed to originate from the deaths of...
The Elongated Structure of the Hercules dSph from Deep LBT Imaging (2007)
Coleman, Matthew G., Martin, Nicolas F., Rix, Hans-Walter, Sand, David J., Bell, Eric F., ...
We present a deep, wide-field photometric survey of the newly-discovered Hercules dwarf spheroidal galaxy, based on data from the Large Binocular Telescope. Images in B, V and r were obtained with...
Coleman, Matthew G., Martin, Nicolas F., Rix, Hans-Walter, Sand, David J., Bell, Eric F., ...
We present a deep, wide-field photometric survey of the newly discovered Hercules dwarf spheroidal galaxy (dSph), based on data from the Large Binocular Telescope. Images in B, V, and r were obtained...
Infrared photometry of Cepheids in the LMC clusters NGC 1866 and NGC 2031 (2006)
Testa, Vincenzo, Marconi, Marcella, Musella, Ilaria, Ripepi, Vincenzo, Dall'Ora, Massimo, Ferraro, Francesco R., ...
Near infrared (IR) studies of Cepheid variables in the LMC take advantage of the reduced light curve amplitude and metallicity dependence at these wavelengths. This work presents such photometry for...
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...
A multiwavlength study of PSR B0628-28: The first overluminous rotation-powered pulsar? (2005)
Becker, Werner, Jessner, Axel, Kramer, Michael, Testa, Vincenzo, Howaldt, Clemens
The ROSAT source RX J0630.8-2834 was suggested by positional coincidence to be the X-ray counterpart of the old field pulsar PSR B0628-28. This association, however, was regarded to be unlikely based...
A multiwavelength study of PSR B0628-28: the first overluminous rotation-powered pulsar? (2005)
Becker, Werner, Jessner, Axel, Kramer, Michael, Testa, Vincenzo, Howaldt, Clemens
Probing the RGB-phase transition: Near-IR photometry of six intermediate age LMC clusters (2004)
Ferraro, Francesco R., Origlia, Livia, Testa, Vincenzo, Maraston, Claudia
This is the first of a series of papers devoted to a global study of the photometric properties of the red stellar sequences in a complete sample of the Large Magellanic Cloud clusters, by means of...
Weisskopf, Martin C., Becker, Werner, Swartz, Douglas A., Pavlov, George G., Elsner, Ronald F., Grindlay, Jonathan, ...
VLT spectroscopy of globular clusters in the Sombrero galaxy (2002)
Held, Enrico V., Moretti, Alessia, Federici, Luciana, Cacciari, Carla, Rizzi, Luca, Testa, Vincenzo
We have obtained intermediate-resolution VLT spectroscopy of 75 globular cluster candidates around the Sa galaxy M104 (NGC4594). Fifty-seven candidates out to ~ 40 kpc in the halo of the galaxy were...
Wide field photometry of the M104 globular cluster system (2002)
Moretti, Alessia, Held, Enrico V., Rizzi, Luca, Testa, Vincenzo, Federici, Luciana, Cacciari, Carla
We present preliminary results of a wide field study of the globular cluster system of NGC4594, the Sombrero galaxy. The galaxy was observed in B, V, and R using the Wide Field Imager on the ESO 2.2m...
The Large Magellanic Cloud globular cluster NGC 1866: new data, new models, new analysis (1999)
Testa, Vincenzo, Ferraro, Francesco R., Chieffi, Alessandro, Straniero, Oscar, Limongi, Marco, Pecci, Flavio Fusi
We present a new deep (down to V ~ 24) photometry of a wide region (6'x 6') around the LMC globular cluster NGC1866: our sample is complete, down to 3 mag below the brightest MS star. Detailed...
Vincenzo Testa, Francesco R. Ferraro, Alessandro Chieffi, Flavio Fusi Pecci
We present a new deep (down to V D 24) photometry of a wide region (D6 @ ] 6@) around the Large Magellanic Cloud globular cluster NGC 1866. Our sample is much larger (by more than a factor of 3) than...