Recent Submissions

  • Gaia white dwarfs within 40 pc – I. Spectroscopic observations of new candidates 

    Tremblay, P. E.; Hollands, M.; Izquierdo Tugas, Pere; Gänsicke, Boris T.; Koester, D.; Brown, W J; Hermes, J. J.; Kleinman, Scot J.; Manser, C. J.; Marsh, Thomas R.; Schreiber, Mathias R.; Silvotti, R.; Rebassa Mansergas, Alberto; Raddi, Roberto (Oxford University Press, 2020-09-01)
    Article
    Open Access
    We present a spectroscopic survey of 230 white dwarf candidates within 40 pc of the Sun from the William Herschel Telescope and Gran Telescopio Canarias. All candidates were selected from Gaia Data Release 2 (DR2) and in ...
  • Search for nova presolar grains: gamma-ray Spectroscopy of Ar-34 and its relevance for the astrophysical Cl-33(p,gamma) reaction 

    José Pont, Jordi (American Institute of Physics (AIP), 2020-06-26)
    Article
    Open Access
    The discovery of presolar grains in primitive meteorites has initiated a new era of research in the study of stellar nucleosynthesis. However, the accurate classification of presolar grains as being of specific stellar ...
  • Low-energy( 23)Al beta-delayed proton decay and Na-22 destruction in novae 

    Perez Loureiro, David; Wrede, Christopher; José Pont, Jordi (American Physical Society (APS), 2020-05-19)
    Article
    Open Access
    The radionuclide22Na is a target of¿-ray astronomy searches, predicted to be produced during thermonuclearrunaways driving classical novae. The22Na(p,¿)23Mg reaction is the main destruction channel of22Na during anova, ...
  • Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye 

    Rebassa Mansergas, Alberto (EDP Sciences, 2020-01-21)
    Article
    Open Access
    Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light curve ...
  • 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. ...
  • 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 ...
  • 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 ...

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