The study of small scale magnetic structures in the solar photosphere is of great relevance for the understanding of the global behaviour of the Sun. Because of the small spatial and temporal scales involved, the use of high resolution images and fast cadence is fundamental for their study. In order to obtain such images, sophisticated

We introduce a new automatic code (StePar) for determinig stellar atmospheric parameters (T_{eff}, log{g}, ξ and [Fe/H]) in an automated way. StePar employs the 2002 version of the MOOG code (Sneden 1973) and a grid of Kurucz ATLAS9 plane-paralell model atmospheres (Kurucz 1993). The atmospheric parameters are obtained from the EWs of 263 Fe I and

We present a project to study the stellar populations in the outskirts of spiral galaxies. We analyse the possible different radial mixing processes characterising different luminosity profiles and morphologies. This study makes use of the IFU spectroscopic data of the CALIFA collaboration. We have selected a sample of around 60 spiral galaxies

Taking advantage of the ultradeep near-infrared imaging obtained with the Hubble Space Telescope on the Hubble Ultra Deep Field, we detect and explore for the first time the properties of the stellar haloes of two Milky Way-like galaxies at z ˜ 1. We find that the structural properties of those haloes (size and shape) are similar to the ones found

The OTELO project is the extragalactic survey currently under way using the tunable filters of the OSIRIS instrument at the GTC. OTELO is already providing the deepest emission line object survey of the universe up to a redshift 7. In this contribution, the status of the survey and the first results obtained will be presented.

Aims: We systematically study the relations between the Hα luminosity and the near-IR luminosity and temperature of a set of selected HII regions in the disc of M100. Methods: By using the technique of cross-reference between the optical Hα image (the catalogue of HII regions in M100) and the Spitzer IRAC images, we locate the selected HII regions