We report the results on the EMIR (Espectrógrafo Multiobjeto Infra-Rojo) performances after two semesters of scientific operations at the Gran Telescopio Canarias (GTC). EMIR is one of the first common user instruments for the GTC, the 10 meter telescope operating at the Roque de los Muchachos Observatory (La Palma, Canary Islands, Spain). EMIR

The study of high redshift galaxies is crucial for understanding the reionization process, the formation and evolution of galaxies, and the large-scale structure in the Universe. The main goal of this project was to obtain an ultra-deep image taken with a narrow-band filter (FWHM = 11nm and central wavelength λ_{c} = 1.254 μm), designed by the ALBA

Context. We previously explored the circumstellar effects on Rb and Zr abundances in a sample (21) of massive Galactic O-rich asymptotic giant branch (AGB) stars. Here we are interested in clarifying the role of the extended atmosphere in the case of Li and Ca. Li is an important indicator of hot bottom burning while the total Ca abundances in

Context. In previous work, we studied a prominence which appeared like a tornado in a movie made from 193 Å filtergrams obtained with the Atmospheric Imaging Assembly (AIA) imager aboard the Solar Dynamics Observatory (SDO). The observations in Hα obtained simultaneously during two consecutive sequences of one hour with the Multi-channel

In both panels of figure 11, the unit of the z axis was mistakenly written as "pb" when it should have been "fb". The corrected versions are shown in figure 1.

In this work, we investigate the impact of large-scale environment on the IMF in quiescent galaxies. For this purpose, we compare the trend of IMF-sensitive spectral features with respect to galaxy mass in three samples of intermediate-mass galaxies that reside in low, intermediate and high-density environments. Using SDSS DR7 spectra stacked by