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The enhancement and decrement of the Sunyaev-Zeldovich effect towards the ROSAT Cluster RXJ0658-5557
P. Andreani, H. Boehringer, G. Dall'Oglio +9
We report simultaneous observations at 1.2 and 2 mm, with a double channel photometer on the SEST Telescope, of the X-ray cluster RXJ0658-5557 in search for the Sunyaev-Zel'dovich…
Extremely Red Galaxies: Old or Dusty ?
Andrea Cimatti, Paola Andreani, Huub Röttgering +1
The nature of the extremely red galaxies is poorly known, the critical issue being whether they are old ellipticals at or distant star-forming galaxies strongly reddened by…
Vigorous star formation hidden by dust in a galaxy at
Andrea Cimatti, Paola Andreani, Huub Röttgering +1
Near-infrared surveys have revealed a substantial population of enigmatic faint galaxies with extremely red optical-to-near-infrared colours and with a sky surface density comparab…
The luminosity function and clustering evolution of Quasars
S. Cristiani, F. La Franca, P. Andreani
Recent results have questioned the description of the QSO luminosity function in terms of a pure luminosity evolution and call for a luminosity dependent luminosity evolution. Meas…
The evolution of the clustering of QSOs
F. La Franca, P. Andreani, S. Cristiani
The evolution of QSO clustering is investigated with a new sample of 388 QSOs with 0.3<z<2.2, B<20.5 and M_B<-23. Evidence is found for an increase of the clustering amplitude with…