Laser Guide Stars -LGS- has been widely proposed to extend the domain of stable operation for adaptive optics systems in large telescopes. As LGS are formed in...

2MASS J20395358+4222505 is a highly extincted (Av= 9.6 mag) early B-supergiant located in the nearest massive star forming region, Cyg-X, in the outskirts of...

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We describe the boxy bulge, long stellar bar and elliptical ring of the Galaxy. This model has largely evolved from NIR survey work by many teams and differs...

Gyrochronology can yield useful ages for field main-sequence stars, a regime where other techniques are problematic. Typically, gyrochronology relations are...

The evolution of the morphology of C/1999 S4 (LINEAR) is examined from a series of images taken from shortly before the disruption of the nucleus until 10 days...

Following the study already presented in our previous work, based on the Nordic Optical Telescope (NOT) sample, which consists on five clusters of galaxies...

The results of optical spectroscopy and photometry from La Palma (Canary Islands) of V404 Cyg are presented. They correspond to the optical counterpart of the...

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