Now showing items 21-39 of 39

    • Mass and eccentricity constraints on the planetary debris orbiting the white dwarf WD 1145+017 

      Gurri Pérez, Pol (Universitat Politècnica de Catalunya, 2016-06-29)
      Bachelor thesis
      Open Access
      Covenantee:   University of Warwick
      Being the first of its kind, the white dwarf WD 1145+017 exhibits a complex system of disintegrating debris which offers a unique opportunity to study its disruption process in real time. Even with plenty of transit ...
    • Model Rocket Workshop 

      Far, Marc; Hernández, Alberto; Martínez, Joan; Pascual, Núria (Universitat Politècnica de Catalunya, 2015-06-01)
      Coursework
      Open Access
      In this article will be explained the construction and launch of a model rocket, from the simulations to the workshop, with the materials used and the flight tests passed. Includes both simulated and experimental graphics ...
    • Monte Carlo simulations of the population of single and binary white dwarfs of our galaxy 

      Camacho Díaz, Judit (Universitat Politècnica de Catalunya, 2014-06-19)
      Doctoral thesis
      Open Access
      Since white dwarfs are the final stage of the evolution of the vast majority of stars, they carry important information about the chemical evolution of our Galaxy, its star formation rate, and its structure and dynamics. ...
    • Multi-dimensional simulations of mixing in classical novae 

      Casanova Bustamante, Jordi (Universitat Politècnica de Catalunya, 2011-11-03)
      Doctoral thesis
      Open Access
      Classical nova explosions are stellar explosions that take place in close binary systems with an energy release only exceeded by gamma-ray bursts and supernova explosions. Matter from the white dwarf flows through the inner ...
    • Nonlinear one-zone models of stellar pulsations 

      Munteanu, Andreea (Universitat Politècnica de Catalunya, 2003-12-16)
      Doctoral thesis
      Open Access
      Nuestro trabajo se ha concentrado en la simulación y el análisis de modelos no-lineales aplicados a las curvas de luz ópticas de estrellas variables de largo periodo. Cuando las estrellas de masa pequeña o intermedia (de ...
    • Payload data handling, telemetry and data compression systems for Gaia. 

      Portell i de Mora, Jordi (Universitat Politècnica de Catalunya, 2005-09-26)
      Doctoral thesis
      Open Access
      Gaia, la nova missió astromètrica de la ESA amb un llançament previst pel 2011, observarà més de mil milions d'estels i altres objectes amb una exactitud sense precedents. Els seus ambiciosos objectius desbanquen completament ...
    • Population synthesis studies of the white dwarfs of the galactic disk and halo 

      Cojocaru, Elena Ruxandra (Universitat Politècnica de Catalunya, 2016-11-24)
      Doctoral thesis
      Open Access
      As the evolutionary end-point of most main-sequence stars, white dwarfs can be used to infer important properties concerning the formation and evolution of the different Galactic stellar populations. Population synthesis ...
    • Simulación de Monte Carlo de la población de enanas blancas de la galaxia 

      Torres Gil, Santiago (Universitat Politècnica de Catalunya, 2002-07-10)
      Doctoral thesis
      Open Access
      El estudio de las propiedades de la población de enanas blancas de la Galaxia es muy amplio, e implica aportaciones en diferentes campos de la astrofísica, tales como evolución estelar, dinámica galáctica, ...
    • Smoothed Particle Hydrodynamics simulations of white dwarf close encounters in dense stellar systems 

      Aznar Siguan, Gabriela (Universitat Politècnica de Catalunya, 2011-09-22)
      Master thesis
      Open Access
      English: In old dense stellar systems collisions of white dwarfs are a rather frequent phenomenon. Here we present the results of several Smoothed Particle Hydrodynamics simulations of close encounters of white dwarfs to ...
    • Statistical analysis of a massive astronomical cross-matching process 

      Nuño Gómez, Daniel-Juan (Universitat Politècnica de Catalunya, 2016-04-08)
      Master thesis (pre-Bologna period)
      Open Access
      Gaia is an ESA mission to create a 3D map of our Galaxy. The main objective is to provide positional measurements for about one billion stars. Gaia will scan the same sky region about 85 times in different directions. This ...
    • Study and analysis of SENTINEL-1 SAR data products aiming at their on-ground compression 

      Caraver Moya, Joel (Universitat Politècnica de Catalunya, 2017-10)
      Bachelor thesis
      Restricted access - author's decision
    • Study, design and implementation of robust entropy coders 

      Clotet Altarriba, Marcial (Universitat Politècnica de Catalunya, 2010-07)
      Master thesis (pre-Bologna period)
      Open Access
    • La Terraformació de Mart: desenvolupament d'un model climàtic latitudinal per estudiar l'ecopoiesi planetària de Mart 

      Garcia Solà, Daniel (Universitat Politècnica de Catalunya, 2016-09)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Institut d'Estudis Espacials de Catalunya
      Les característiques del planeta Mart fan que sigui un dels millors candidats per durhi a terme un procés d’enginyeria planetària conegut com a terraformació amb l’objectiu d’aconseguir una atmosfera habitable i respirable ...
    • Testing the initial-final mass relationship of white dwarfs 

      Catalán Ruiz, Sílvia (Universitat Politècnica de Catalunya, 2008-03-03)
      Doctoral thesis
      Open Access
      White dwarfs are the final remnants of low- and intermediate-mass stars. About 95% of main- sequence stars will end their evolutionary pathways as white dwarfs and, hence, the study of the white dwarf population provides ...
    • Tests hidrodinàmics amb el codi multidimensional FLASH 

      Casanova i Bustamante, Jordi (Universitat Politècnica de Catalunya, 2007-09-12)
      Master thesis
      Open Access
      El FLASH és un codi estable i flexible, desenvolupat a la Universitat de Chicago, que permet estudiar diferents fenòmens hidrodinàmics. L'objectiu futur és desenvolupar models multidimensionals centrats en el camp de les ...
    • The effects of mixing on the evolution of intermediate-mass stars of different metallicities 

      Renedo Rouco, Isabel (Universitat Politècnica de Catalunya, 2009-02-04)
      Master thesis
      Open Access
      We study the evolution of solar (Z = 0.016) and metal-poor stars (Z = 0.001) of initial masses corresponding to 2M⊙, and 4M⊙, from the main sequence until the formation of degenerate carbon-oxygen cores. We explore the ...
    • The evolution of tidal streams in the aftermath of white dwarf mergers 

      Martínez Murillo, Fernando (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Covenantee:   University of Exeter
      In this work, a series of Smoothed Particle Hydrodynamics simulations of the coalescence between two He and CO white dwarfs is presented. The simulations discussed here encompass a wide range of stellar masses that are ...
    • The impact of jitter on the scanning law of Gaia 

      Bartrons Casademont, Eduard (Universitat Politècnica de Catalunya, 2009-02-25)
      Master thesis (pre-Bologna period)
      Open Access
      Gaia is an ambitious mission of the European Space Agency (ESA). Its main objective is to obtain a three-dimensional map of the Milky Way. Gaia will reveal the composition of the Galaxy and the way in which it was formed ...
    • White dwarf dynamical interactions 

      Aznar Siguan, Gabriela (Universitat Politècnica de Catalunya, 2015-04-30)
      Doctoral thesis
      Open Access
      Merging white dwarfs is a promising channel to trigger Type Ia supernovae, known as the double degenerate scenario. Supernovae are stellar explosions that radiate as much energy as any ordinary star is expected to emit ...