El Grup d' Astronomía i Astrofísica de la Universitat Politècnica de Catalunya (UPC) reuneix a un nombre reduit de persones interessades en una àmplia gama de temes de la Astronomía moderna. La història del grup va començar l'any 1995, just desprès de que alguns astrofísics perteneixents a dos departaments de física diferents (el departament de Física Aplicada, i el de Física i Enginyería Nuclear.) ajuntaran esforços per tal de crear un grup d'investigació competitiu en ciències de l'espai dins de la UPC. En la actualitat el GAA compta amb 7 investigadors permanents, a més de 6 estudiants doctorats i 11 estudiants postgraduats buscant aconseguir el seu doctorat. L'àrea principal d'actividad de la investigació del GAA pot ser classificada com Astrofísica Teórica. El tema és molt ampli, incloent-hi simulacions de computadora de les últimes etapes de la evolució estelar (l'enfriamient de les nanes blanques, AGBs, explosions de novas i supernovas, explosions de raigs X i física dels objectes compactes), estructura y dinàmica dels jets relacionats amb el PN i els objectes de l'Herbig-Haro i Cosmología. Alguns membres també estàn interessats en altres areas, incloent-hi estudis del comportament cinemàtic de estrelles en la vecindad Solar així com el diseny de la instrumentació que serà utilitzada per els satèlits científics.

Pàgina web del grup de recerca

Recent Submissions

  • Experimentally well-constrained masses of 27P and 27S: implications for studies of explosive binary systems 

    Sun, Lijie; Xu, Xinxing; Hou, S.Q.; José Pont, Jordi (Elsevier, 2020-03-10)
    Article
    Open Access
    The mass of 27P is expected to impact the X-ray burst (XRB) model predictions of burst light curves and the composition of the burst ashes, but large uncertainties and inconsistencies still exist in the reported 27P masses. ...
  • Integral SPH: Connecting the partition of unit to accurate gradient estimation 

    García Senz, Domingo; Cabezón Gómez, Rubén Martín (University of Exeter, 2019)
    Conference lecture
    Open Access
  • 123-321 models of classical novae 

    José Pont, Jordi; Shore, Steven N.; Casanova Bustamante, Jordi (EDP Sciences, 2020-01-28)
    Article
    Open Access
    Context. High-resolution spectroscopy has revealed large concentrations of CNO and sometimes other intermediate-mass elements (e.g., Ne, Na, Mg, or Al, for ONe novae) in the shells ejected during nova outbursts, suggesting ...
  • The effects of unresolved double degenerates in the white dwarf luminosity function 

    Rebassa Mansergas, Alberto; Torres Gil, Santiago (Oxford University Press, 2020-02-01)
    Article
    Restricted access - publisher's policy
    We perform an analysis of the single white dwarf and the double degenerate binary populations in the solar neighbourhood following a population synthesis approach to investigate the effects of unresolved double degenerates ...
  • Explosion of fast spinning Sub-Chandrasekhar mass white dwarfs 

    Cabezón Gómez, Rubén Martín; García Senz, Domingo (Springer International Publishing, 2018)
    Conference lecture
    Restricted access - publisher's policy
    We study the explosion of rotating sub-Chandrasekhar mass white dwarfs using three-dimensional hydrodynamic simulations. High rotational speeds are assumed in order to significantly distort the initial spherical geometry ...
  • Gaia DR2 white dwarfs in the Hercules stream 

    Torres Gil, Santiago; Cantero, Carles; Camisassa, María E.; Antoja, T.; Rebassa Mansergas, Alberto; Althaus, Leandro G.; Thelemaque, Thomas; Canovas Cabrera, Héctor (EDP Sciences, 2019-09-01)
    Article
    Open Access
    We analyzed the velocity space of the thin- and thick-disk Gaia white dwarf population within 100 pc by searching for signatures of the Hercules stellar stream. We aimed to identify objects belonging to the Hercules stream, ...
  • Effects of Ne-22 sedimentation and metallicity on the local 40 pc white dwarf luminosity function 

    Tononi García, Jordi; Torres Gil, Santiago; García-Berro Montilla, Enrique; Camisassa, María E.; Althaus, Leandro G.; Rebassa Mansergas, Alberto (EDP Sciences, 2019-08-06)
    Article
    Open Access
    We analyzed the effect of the sedimentation of 22Ne on the local white dwarf luminosity function by studying scenarios under different Galactic metallicity models. Methods. We use an advanced population synthesis code based ...
  • Infrared-excess white dwarfs in the Gaia 100 pc sample 

    Rebassa Mansergas, Alberto; Solano Márquez, Enrique; Xu, Siyi; Rodrigo Blanco, Carlos; Jiménez Esteban, F. M.; Torres Gil, Santiago (Oxford University Press, 2019-11)
    Article
    Open Access
    We analyse the 100¿pc Gaia white dwarf volume-limited sample by means of VOSA (Virtual Observatory SED Analyser) with the aim of identifying candidates for displaying infrared excesses. Our search focuses on the study of ...
  • Nucleosynthesis in stellar explosions: Type Ia supernovae, classical novae, and type I X-ray bursts 

    José Pont, Jordi (2019-02-20)
    Article
    Open Access
    Nuclear astrophysics aims at understanding the cosmic origin of the chemical elements and the energy generation in stars. It constitutes a truly multidisciplinary arena that combines tools, developments, and achievements ...
  • Application of the THM to the investigation of reactions induced by unstable nuclei: the 18F(p,a)15O case 

    LaCognata, M; Pizzone, R; José Pont, Jordi (2019-12-04)
    Article
    Open Access
    The Trojan Horse Method is applied to the investigation of the18F(p,a)15O reaction, by extractingthe quasi free contribution to the2H(18F,a15O)nprocess. For the first time the method is applied to a reaction ofastrophysical ...
  • Observatory science with eXTP 

    Zand, Jean J. M. in ’t; Bozzo, Enrico; Qu, JinLu; Sala Cladellas, Glòria; José Pont, Jordi; Linares Alegret, Manuel (2019-02-01)
    Article
    Open Access
    In this White Paper we present the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to Observatory Science targets. These include flaring stars, supernova remnants, accreting white ...
  • Building initial models of rotating white dwarfs with SPH 

    Blanco Iglesias, José Miguel; García Senz, Domingo; Cabezón Gómez, Rubén Martín (2019)
    Conference lecture
    Open Access
    A general procedure to build self-gravitational, rotating equilibrium structures with the Smoothed Particle Hydrodynamics (SPH) technique does not exist. In particular, obtaining stable rotating configurations for white ...

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