Context. OB stars are important in the chemistry and evolution of the Universe, but the sample of targets that is well understood from an asteroseismological point of view is still too limited to provide feedback on the current evolutionary models. Aims: We extend this sample with two spectroscopic binary systems. Our goal is to provide orbital

The stellar metallicity distribution of stars can be a very useful tool to constrain the chemical evolution models reproducing different formation scenarios for the Galactic bulge. However, classical spectroscopy of individual stars is observationally expensive, and the surveys done so far have been unsuccessful due to the low number statistics

A new tool is being developed to derive the star formation and chemical enrichment history of the galactic disc through comparison of future Gaia data with synthetic color magnitude diagrams. First steps are being conducted joining two powerful algorithms: IAC-pop/MinnIAC, a code that has widely and very successfully being applied to external

We present a measurement of the Type I quasar luminosity function at z = 5 using a large sample of spectroscopically confirmed quasars selected from optical imaging data. We measure the bright end (M 1450

We present a general overview and the first results of the SUMO project (a SUrvey of Multiple pOpulations in Globular Clusters). The objective of this survey is the study of multiple stellar populations in the largest sample of globular clusters homogeneously analysed to date. To this aim we obtained high signal-to-noise (S/N > 50) photometry for

The aim of this short contribution is to inform the Spanish Society of Astronomy about the theoretical background and scientific motivation for the Chromospheric Lyman-alpha Spectropolarimeter (CLASP), whose goal is to open up a diagnostic window for magnetic field measurements in the outer solar atmosphere. CLASP is an experiment for measuring the