Presentamos un estudio arqueoastronómico del yacimiento arqueológico de La Malladeta (La Vila Joiosa, Alicante), santuario ibérico y posteriormente romano altoimperial que se utilizó entre los siglos iv a. C. y i d. C. situado en la cima de un promontorio costero. El seguimiento fotográfico de los ortos solares desde la cima del santuario en fechas

El principal propòsito de esta tesis ha sido la búsqueda y caracterización de estrellas pobres en metales. Para ello se han analizado más de tres millones de espectros de baja resolución provenientes de Sloan Sky Digital Survey (SDSS) y de Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), y elaborado un catálogo de estrellas

We present optical photometry (i and Z band) and low-resolution spectroscopy (640-1015 nm) of very faint candidate members (J = 20.2-21.2 mag) of the Pleiades star cluster (120 Myr). The main goal is to address their cluster membership via photometric, astrometric, and spectroscopic studies, and to determine the properties of the least massive

The transverse momentum balance of pairs of back-to-back b quark jets in PbPb and pp collisions recorded with the CMS detector at the LHC is reported. The center-of-mass energy in both collision systems is 5.02 TeV per nucleon pair. Compared to the pp collision baseline, b quark jets have a larger imbalance in the most central PbPb collisions, as

We present a detailed spectroscopic study of the optical counterpart of the neutron star X-ray transient Aquila X-1 during its 2011, 2013 and 2016 outbursts. We use 65 intermediate resolution GTC-10.4 m spectra with the aim of detecting irradiation-induced Bowen blend emission from the donor star. While Gaussian fitting does not yield conclusive

We report the identification of an extreme protocluster of galaxies in the early universe whose core (nicknamed Distant Red Core, DRC, because of its very red color in Herschel SPIRE bands) is formed by at least 10 dusty star-forming galaxies (DSFGs), spectroscopically confirmed to lie at {z}spec}=4.002 via detection of [C I](1–0), 12CO(6–5), 12CO