Now showing items 64-72 of 72

    The effect of activity on the fundamental properties of low-mass stars 

    Morales Peralta, Juan Carlos (Date of defense: 2010-06-14)

    The comparison between stellar structure models and observations of low-mass stars revealed that the stellar radii predicted by models for these stars are about 10% lower than observed, while effective temperatures are ...

    The evolution of the Brewer-Dobson circulation and the ozone layer during the last three decades 

    Ossó Castillón, Albert (Date of defense: 2014-07-10)

    In 1985 Joseph Farman and his colleagues of the British Antarctic Survey published a paper [Farman et al. 1985] showing that the total ozone content of the atmosphere during the Antarctic spring had decreased dramatically ...

    The keV-TeV connection in gamma-ray binaries 

    Zabalza de Torres, Victor (Date of defense: 2011-05-13)

    Gamma-ray binaries are systems that comprise a young, massive star and a compact object that can be either a young pulsar or a black hole. They emit radiation from radio up to tens of TeV and show flux variability along ...

    The radio emitting X-ray binary systems LS 1+61°303 and Cygnus X-3 

    Peracaula i Bosch, Marta (Date of defense: 1997-06-16)

    The purpose of this work has been the study of Radio Emitting X-Ray Binaries (REXRBs) both from the observational and theoretical approaches. <br/><br/>We have mainly concentrated in the analysis of their properties inferred ...

    The star-forming core ahead of HH 80N: studying the interaction with a parsec scale jet 

    Masqué Saumell, Josep Maria (Date of defense: 2012-03-23)

    The region GGD 27, located in Sagittarius at a distance of 1.7 kpc, is an active star forming region. The most well-known observational signature of this region, the HH 80/81/80N jet, is one of the largest collimated jet ...

    The use of Java in large scientific applications in HPC environments 

    Fries, Aidan (Date of defense: 2013-01-21)

    Java is a very commonly used computer programming language, although its use amongst the scientific and High Performance Computing (HPC) communities remains relatively low. In this thesis, the option of using Java for ...

    Timing the chemical evolution of the dense gas in high-mass star forming regions 

    Busquet Rico, Gemma (Date of defense: 2010-12-20)

    [spa] Diversos estudios observacionales, principalmente de regiones de formación estelar de baja masa, muestran que el cociente NH3/N2H+ es bajo en núcleos asociados con objetos estelares jóvenes mientras que este cociente ...

    Tracing the Perseus spiral arm in the anticenter direction 

    Monguió i Montells, Maria (Date of defense: 2013-11-22)

    The main purpose of this thesis is to map the radial variation of the stellar density for the young stellar population in the Galactic anticenter direction in order to understand the structure and location of the Perseus ...

    Wind Field Retrieval from Satellite Radar Systems 

    Portabella Arnús, Marcos (Date of defense: 2002-11-18)

    Wind observations are essential for determining the atmospheric flow. In particular, sea-surface wind observations are very useful for many meteorological and oceanographic applications. In this respect, most of the satellite ...