Ara es mostren els items 1-20 de 78

    • A hidden population of white dwarfs with atmospheric carbon traces in the Gaia bifurcation 

      Camisassa, María Eugenia; Torres Gil, Santiago; Hollands, Mark; Koester, Detlev; Raddi, Roberto; Althaus, Leandro G.; Rebassa Mansergas, Alberto (EDP Sciences, 2023-06-01)
      Article
      Accés obert
      Context. The high-quality photometric and astrometric capabilities of the ESA Gaia space mission have revealed a bifurcation of the white dwarf sequence on the color magnitude diagram with two branches: A and B. While the ...
    • A population synthesis fitting of the Gaia resolved white dwarf binary population within 100 pc 

      Torres Gil, Santiago; Canals Canals, Pere; Jiménez Esteban, F. M.; Rebassa Mansergas, Alberto; Solano Márquez, Enrique (Oxford University Press, 2022-04-01)
      Article
      Accés obert
      The Gaia mission has provided an unprecedented wealth of information about the white dwarf population of our Galaxy. In particular, our studies show that the sample up to 100\,pc from the Sun can be considered as practically ...
    • A population synthesis study of the luminosity function of hot white dwarfs 

      Torres Gil, Santiago; García-Berro Montilla, Enrique; Krzesinski, Jurek; Kleinman, Scot J. (2014-03-05)
      Article
      Accés obert
      Context. We present a coherent and detailed Monte Carlo simulation of the population of hot white dwarfs. We assess the statistical significance of the hot end of the white dwarf luminosity function and the role played by ...
    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (Astronomical Society of the Pacific Conference Series (ASP), 2015-06-01)
      Article
      Accés obert
      Detached white dwarf + main sequence (WD+MS) systems represent the simplest population of post-common envelope binaries (PCEBs), and their ensemble properties carry important information about common-envelope phase. However, ...
    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
    • A population synthesis study of white dwarf-main sequence binaries in the galactic disk 

      Rebassa Mansergas, Alberto; García-Berro Montilla, Enrique; Torres Gil, Santiago (2017)
      Text en actes de congrés
      Accés obert
      The companion mass ratio distribution (CMRD) of main sequence binaries is a crucial physical quantity for understanding the evolution of stars in binary systems and for constraining models of binary star formation. However, ...
    • A white dwarf catalogue from Gaia-DR2 and the Virtual Observatory 

      Jiménez Esteban, F. M.; Torres Gil, Santiago; Rebassa Mansergas, Alberto; Skorobogatov, G.; Cantero, C. (Oxford University Press, 2018-01-01)
      Article
      Accés obert
      We present a catalogue of 73¿221 white dwarf candidates extracted from the astrometric and photometric data of the recently published Gaia-DR2 catalogue. White dwarfs were selected from the Gaia Hertzsprung–Russell diagram ...
    • Accurate mass and radius determinations of a cool subdwarf in an eclipsing binary 

      Rebassa Mansergas, Alberto; Parsons, Steven G.; Dhillon, Vikram S.; Ren, Juanjuan; Littlefair, Stuart P.; Marsh, Thomas R.; Torres Gil, Santiago (Springer Nature, 2019-04-08)
      Article
      Accés obert
      Cool subdwarfs are metal-poor low-mass stars that formed during the early stages of the evolution of our Galaxy. Because they are relatively rare in the vicinity of the Sun, we know of few cool subdwarfs in the solar ...
    • Axions and the luminosity function of white dwarfs : the thin and thick discs, and the halo 

      Isern Vilaboy, Jordi; García-Berro Montilla, Enrique; Torres Gil, Santiago; Cojocaru, Elena Ruxandra; Catalán, S (Oxford University Press, 2018-08-01)
      Article
      Accés obert
      The evolution of white dwarfs is a simple gravothermal process of cooling. Since the shape of their luminosity function is sensitive to the characteristic cooling time, it is possible to use its slope to test the existence ...
    • Carbon-oxygen ultra-massive white dwarfs in general relativity 

      Althaus, Leandro G.; Corsico, Alejandro H.; Camisassa, María Eugenia; Torres Gil, Santiago; Gil Pons, Pilar; Rebassa Mansergas, Alberto; Raddi, Roberto (Oxford University Press, 2023-08-01)
      Article
      Accés obert
      We employ the La Plata stellar evolution code, lpcode, to compute the first set of constant rest-mass carbon–oxygen ultra-massive white dwarf evolutionary sequences for masses higher than 1.29 M¿ that fully take into account ...
    • Double degenerate mergers as progenitors of high-field magnetic white dwarfs 

      García-Berro Montilla, Enrique; Lorén Aguilar, Pablo; Aznar Siguan, Gabriela; Torres Gil, Santiago; Camacho Díaz, Judit; Althaus, Leandro Gabriel; Córsico, Alejando Hugo; Kulebi, Baybar; Isern Vilaboy, Jordi (2011-04-10)
      Article
      Accés obert
      High-field magnetic white dwarfs have been long suspected to be the result of stellar mergers. However, the nature of the coalescing stars and the precise mech anism that produces the magnetic field are still unknown. ...
    • 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
      Accés obert
      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 ...
    • Examen Final 

      Torres Gil, Santiago; Rebassa Mansergas, Alberto (Universitat Politècnica de Catalunya, 2019-01-21)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      García-Berro Montilla, Enrique; Torres Gil, Santiago (Universitat Politècnica de Catalunya, 2017-06-02)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      García-Berro Montilla, Enrique; Torres Gil, Santiago (Universitat Politècnica de Catalunya, 2013-06-05)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Torres Gil, Santiago; Rebassa Mansergas, Alberto (Universitat Politècnica de Catalunya, 2020-01-14)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Torres Gil, Santiago; García-Berro Montilla, Enrique (Universitat Politècnica de Catalunya, 2015-06-03)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      García-Berro Montilla, Enrique; Torres Gil, Santiago (Universitat Politècnica de Catalunya, 2014-06-23)
      Examen
      Accés restringit a la comunitat UPC
    • Explaining the Type Ia supernova PTF 11kx with a violent prompt merger scenario 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Soker, Noam; Kashi, Amit (2013-05)
      Article
      Accés obert
      We argue that the multiple shells of circumstellar material (CSM) and the supernovae (SNe) ejecta interaction with the CSM starting 59 d after the explosion of the Type Ia SN PTF 11kx are best described by a violent prompt ...
    • Factores subjetivos de la construcción sostenible. 

      Torres Gil, Santiago (2005-10-06T14:52:42Z)
      Article
      Accés obert
      El concepte de sostenibilitat requereix del concepte de societat sostenible. Quan ens referim a la sostenibilitat d'un sistema, ens referim a la d'un sistema humà, amb els seus aspectes materials i culturals, i que ha ...