The ratio of the intensities is related to the emph{equivalent width}, W, of the spectral lines, which shape is approximated to a Voigt function resulting from the convolution of a Lorentzian (Stark and Van der Waals effects) and Gaussian (Doppler effect and optical broadening) profiles. Thus, we have studied the influence of the self-absorption

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The Jodrell-IAC CMB experiments located at Teide Observatory, Tenerife consisting of switching radiometers operating at 10, 15 and 33 GHz, and a 33 GHz short baseline interferometer, have covered up to an area of ˜1 steradian at angular scales from 1 to 10 degrees ( l=20-210 ). Sensitivities of ˜10 μ K per beam area have been reached for the most

1967 was the year of the so-called “war of the six days” or “third Arab Israeli war”, the year of the Che Guevara's death in Bolivia, the year of the military coup in Greece and, in medicine, the year of the first human heart transplant. Moreover, the signing of the international agreement on the use of space with peaceful means and the crash of

In Spain we have to make a big effort in order to produce more activities dedicated to the popularization of Science. In this paper we show the activities we have developped, and others that will be done soon, in order to show to the general public, an example of how science is made. The project Star Forming Rate at Different z's is paid with

In this work an analytical description of the NACO PSF with a minimum number of parameters is sought. These parameters are governed by the observational characteristics and the location of the PSF with respect to the guide star. The first order approximation of the PSF can then be used for image deconvolution. The analysis and modelling of the PSF