In the last years thoughtful quantitative analyses of extragalactic blue massive stars have shown not only that these studies are doable even at large distances...

We use integral-field observation of the stellar kinematics obtained with SAURON in combination with Schwarzschild dynamical models to revisit our understanding...

HD 209458b was the first transiting planet discovered, and the first for which its atmosphere, in particular Na I, was detected. With time, it has become one of...

We present an automated morphological classification in 4 types (E, S0, Sab, Scd) of ˜ 700,000 galaxies from the SDSS DR7 spectroscopic sample based on support...

We present observational evidence, from Hαin face-on galaxies, which strongly favours the hypothesis that escaping photons from H II regions are the basic cause...

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Photometric and spectroscopic parameters for sigma Ori very low-mass stars and brown dwarfs candidates. (1 data file).

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Secular evolution gradually shapes galaxies by internal processes,in contrast to early cosmological evolution which is more rapid. Animportant driver of secular...