We present a new (2+1)D galaxy cluster finder based on photometric redshifts called Wavelet Z Photometric (WaZP) applied to DES first year (Y1A1) data. The results are compared to clusters detected by the South Pole Telescope (SPT) survey and the redMaPPer cluster finder, the latter based on the same photometric data. WaZP searches for clusters in

In this work we report the discovery of the hyperluminous galaxy HELP_J100156.75 + 022344.7 at a photometric redshift of $z$ ≍ 4.3. The galaxy was discovered in the Cosmological Evolution Survey (COSMOS) field, one of the fields studied by the Herschel Extragalactic Legacy Project (HELP). We present the spectral energy distribution (SED) of the

Precise knowledge of the charge and rigidity dependence of the secondary cosmic ray fluxes and the secondary-to-primary flux ratios is essential in the understanding of cosmic ray propagation. We report the properties of heavy secondary cosmic ray fluorine F in the rigidity R range 2.15 GV to 2.9 TV based on 0.29 million events collected by the

There is a growing consensus that the vast majority of ultradiffuse galaxies (UDGs) are dwarf galaxies. However, there remain a few UDGs that seem to be special in terms of their globular cluster (GC) systems. In particular, according to some authors, certain UDGs exhibit large GC populations when compared to expectations from their stellar (or

EL OBJETIVO DE ESTA TESIS ES EL ESTUDIO DE LA NOVA ENANA SS CYGNI. EN LA PRIMERA PARTE DE LA MEMORIA SE REVISAN EN PROFUNDIDAD LAS HIPOTESIS Y MODELOS QUE SE APLICAN A ESTE OBJETO EN EL MARCO DE LAS VARIABLES CATACLISMICAS. EN LA SEGUNDA PARTE SE ANALIZAN DATOS ESPECTROSCOPICOS DE SS CYGNI EN LOS ESTADOS DE QUIETUD Y ERUPCION. A PARTIR DE LAS

Investigaciones llevadas a cabo en los últimos 25 años sugieren que la vasta estructura que se observa en el Universo proviene de pequeñísimas fluctuaciones generadas en los primeros instantes del Universo. Gracias al enorme progreso que se ha realizado en los últimos tiempos, se ha podido establecer con gran precisión el valor de los parámetros