Recent Submissions

  • Using large spectroscopic surveys to test the double degenerate model for Type Ia supernovae 

    Breedt, E.; Steeghs, Dani; Marsh, T. R.; Gentile Fusillo, N. P.; Tremblay, P. E.; Green, M.; De Pasquale, S.; Hermes, J. J.; Gänsicke, Boris T.; Parsons, S. G.; Bours, M. C. P.; Longa Peña, P.; Rebassa Mansergas, Alberto (2017-02-20)
    Article
    Open Access
    An observational constraint on the contribution of double degenerates to Type Ia supernovae requires multiple radial velocity measurements of ideally thousands of white dwarfs. This is because only a small fraction of the ...
  • White dwarf dynamical interactions and fast optical transients 

    García-Berro Montilla, Enrique; Badenes Montoliu, Carlos; Aznar-Siguán, Gabriela; Loren Aguilar, Pablo (2017-07-01)
    Article
    Open Access
    Recent advances in time-domain astronomy have uncovered a new class of optical transients with time-scales shorter than typical supernovae and a wide range of peak luminosities. Several subtypes have been identified within ...
  • The critical binary star separation for a planetary system origin of white dwarf pollution 

    Veras, Dimitri; Xu, Siyi; Rebassa Mansergas, Alberto (2018-01-01)
    Article
    Open Access
    The atmospheres of between one quarter and one half of observed single white dwarfs in the Milky Way contain heavy element pollution from planetary debris. The pollution observed in white dwarfs in binary star systems is, ...
  • Spectroscopic study of Ne-20 + p reactions using the JENSA gas-jet target to constrain the astrophysical F-18(p, alpha)O-15 rate 

    Bardayan, D. W.; Chipps, Kelly A.; Ahn, S.; Blackmon, J. C.; Carmichael, S.; Greife, U.; José Pont, Jordi; Kontos, A.; Matos, Mireya E.; Thompson, Paul (AMER PHYSICAL SOC, 2017-11-16)
    Article
    Open Access
    The Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas-jet target was used to perform spectroscopic studies of 20Ne+p reactions. Levels in 19Ne were probed via the 20Ne(p,d)19Ne reaction to constrain the ...
  • The white dwarf binary pathways survey - II. radial velocities of 1453 FGK stars with white dwarf companions from LAMOST DR4 

    Rebassa Mansergas, Alberto; Ren, J. J.; Irawati, P.; García-Berro Montilla, Enrique; Parsons, S. G.; Schreiber, Mathias R.; Gänsicke, Boris T.; Rodríguez-Gil, Pablo; Liu, X.; Manser, C. J.; Nevado, S.P.; Jiménez Ibarra, Felipe; Costero, R.; Michel, R.; Zorotovic, Mónica; Hollands, M.; Han, Z.; Luo, A.; Hita Villaverde, Enrique F.; Kong, X. (2017-12-21)
    Article
    Open Access
    We present the second paper of a series of publications aiming at obtaining a better understanding regarding the nature of type Ia supernovae (SN Ia) progenitors by studying a large sample of detached F, G and K main-sequence ...
  • Testing the white dwarf mass-radius relationship with eclipsing binaries 

    Parsons, S. G.; Gänsicke, Boris T.; Marsh, T. R.; Ashley, R. P.; Bours, M. C. P.; Breedt, E.; Burleigh, M. R.; Copperwheat, C. M.; Dhillon, V. S.; Green, M.; Hardy, L. K.; Hermes, J. J.; Irawati, P.; Kerry, P.; Littlefair, S. P.; McAllister, M. J.; Rattanasoon, S.; Rebassa Mansergas, Alberto; Sahman, D. I.; Schreiber, Mathias R. (2017-10-01)
    Article
    Open Access
    We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass–radius ...
  • The kinematics of the white dwarf population from the SDSS DR12 

    Anguiano, B.; Rebassa Mansergas, Alberto; García-Berro Montilla, Enrique; Torres Gil, Santiago; Freeman, K. C.; Zwitter, T. (2017-08-01)
    Article
    Open Access
    We use the Sloan Digital Sky Survey Data Release 12, which is the largest available white dwarf catalogue to date, to study the evolution of the kinematical properties of the population of white dwarfs in the Galactic disc. ...
  • One-armed spiral instability in double-degenerate post-merger accretion disks 

    kashyap, Rahul; Fisher, Robert T.; García-Berro Montilla, Enrique; Aznar-Siguán, Gabriela; Ji, Suoqing; Loren Aguilar, Pablo (2017-05-01)
    Article
    Open Access
    Increasing observational and theoretical evidence points to binary white dwarf (WD) mergers as the origin of some, if not most, normal Type Ia supernovae (SNe Ia). In this paper, we discuss the post-merger evolution of ...
  • SPHYNX: an accurate density-based SPH method for astrophysical applications 

    Cabezon Gomez, Ruben Martin; García Senz, Domingo; Figueira, Joana (EDP Sciences, 2017-10)
    Article
    Open Access
    Aims. Hydrodynamical instabilities and shocks are ubiquitous in astrophysical scenarios. Therefore, an accurate numerical simulation of these phenomena is mandatory to correctly model and understand many astrophysical ...
  • First measurement of the 34S(p,gamma)35Cl reaction rate through indirect methods for presolar nova grains 

    Gillespie, S; Parikh, A.; Barton, C; Faestermann, Thomas; José Pont, Jordi; Hertenberger, R.; Wirth, Hans Friedrich; de Séréville, N; Riley, J; Williams, M (AMER PHYSICAL SOC, 2017-08-02)
    Article
    Open Access
    Sulphur isotopic ratio measurements may help to establish the astrophysical sites in which certain presolar grains were formed. Nova model predictions of the 34S/32S ratio are, however, unreliable due to the lack of an ...
  • A Trojan horse approach to the production of 18F in Novae 

    la Cognata, M; Pizzone, R; José Pont, Jordi; Hernanz Carbó, Margarita; Cherubini, S; Gulino, M; Rapisarda, G; Spitaleri, C (2017-09-01)
    Article
    Open Access
    Crucial information on nova nucleosynthesis can be potentially inferred from ¿-ray signals powered by 18F decay. Therefore, the reaction network producing and destroying this radioactive isotope has been extensively studied ...
  • An efficient method for the static deflection analysis of an infinite beam on a nonlinear elastic foundation of one-way spring model 

    Ahmad, Fayyaz; Ullah, Malik Zaka; Jang, Taek Soo; Alaidarous, Eman (2017-10-03)
    Article
    Restricted access - publisher's policy
    An efficient numerical iterative method is constructed for the static deflection of an infinite beam on a nonlinear elastic foundation. The proposed iterative scheme consists of quasilinear method (QLM) and Green’s function ...

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