Tests and procedures for optimizing EMIR cooling system
EMIR is a wide-field camera and a multi-object, intermediate resolution near-infrared spectrograph for the GTC telescope. EMIR is a cryogenic instrument whose...
Tests of VPHGs in the NIR for use at cryogenic temperatures
We report on the performances measured at room temperature, before and after a cryogenic cooling cycle, of a set of NIR Volume Phase Holographic Gratings (VPHGs...
We present a sample of the most massive galaxies (M^{*}>10^{11}{M}_{&sun;}) found at z=0 in a fully cosmological simulation performed with MASCLET (Mesh...
Two families of hot stellar systems, named {it `ordinary'/} and {it 'bright'/}, are identified in the ($log R_e, mu_e$) plane built with a luminosity--limited...