We report the confirmation and characterisation of TOI-1820 b, TOI-2025 b, and TOI-2158 b, three Jupiter-sized planets on short-period orbits around G-type stars detected by TESS. Through our ground-based efforts using the FIES and Tull spectrographs, we have confirmed these planets and characterised their orbits, and find periods of around 4.9 d

Active galaxies are these showing strong emission coming from their nuclei. In the case of normal galaxies the nuclear emission has a stellar origin, but in active galactic nuclei (AGN) the emission is produced by accretion of matter into a super-massive black hole (SMBH). Although only a small percentage of galaxies in the nearby Universe

The last evolutionary stage of about 97 per cent of the stars in the Milky Way is the white dwarf phase: a remnant stellar core sustained by electron degeneracy pressure with a typical mass of 0.6 solar masses and a radius such as the Earth's. The study of white dwarfs is not only genuinely interesting due to them being the remnants of the majority

Desde su descubrimiento en 1912 por Victor Hess, los rayos cósmicos han proporcionado información clave sobre el origen, aceleración y propagación de partículas a través de nuestra galaxia. Los experimentos de rayos cósmicos han proporcionado información importante para la física de partículas. En física solar, los rayos cósmicos contribuyen a la

A pesar de que actualmente se conocen alrededor de 5000 planetas, solo unos pocos (~1%) de ellos se han descubierto orbitando alrededor de estrellas con una edad conocida menor de ~1 Ga. Por lo tanto, carecemos de la información necesaria para imponer restricciones sobre los mecanismos que regulan la formación y evolución de sistemas planetarios y

Volatile and organic-rich C-type asteroids may have been one of the main sources of Earth's water. Our best insight into their chemistry is currently provided by carbonaceous chondritic meteorites, but the meteorite record is biased: only the strongest types survive atmospheric entry and are then modified by interaction with the terrestrial