After three decades of the discovery of the first extrasolar planet, the number of known exoplanets has grown exponentially to more than 4000. This rapid evolution in the number of discoveries has been mainly produced by the launch of the two most effective planet-hunter missions, Kepler and TESS, which have been performing a massive search of

El segundo catálogo Planck de fuentes Sunyaev-Zeldovich (SZ), PSZ2 en lo sucesivo, representa la mayor muestra de cumulos de galaxias seleccionados por su señal SZ cubriendo todo el cielo. En el momento de su publicación, el 21% de estos objetos no tenía una contrapartida conocida en otras longitudes de onda. Usando telescopios de los

In this thesis we explore the OTELO (OSIRIS Tunable Filter Emission Line Object) survey. OTELO is a very deep, pencil beam survey for the search of emission line sources by means of the tunable filters of the OSIRIS instrument, installed at the Gran Telescopio Canarias. A tomography scan method results in 2D, low-resolution pseudo-spectra for all

One of the most exciting areas of astronomical research today is the study of exoplanetary systems, engaging the imagination not only of the astronomical community but also of the general public. Since the Nobel-winning discovery of a giant planet around the Sun-like star 51 Pegasi (Mayor & Queloz, 1995), about 4000 extra-solar planets have been

We compute the expected sensitivity on measurements of optical depth to reionization for a ground-based experiment at Teide Observatory. We simulate polarized partial sky maps for the GroundBIRD experiment at the frequencies 145 and 220 GHz. We perform fits for the simulated maps with our pixel-based likelihood to extract the optical depth to