• 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 ...
    • DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate 

      Rebassa Mansergas, Alberto; Cojocaru, Elena Ruxandra; Torres, S.; García-Berro Montilla, Enrique; Liu, X.; Yuan, H-B.; Xiang, M.-X.; Huang, Y.; Koester, D.; Hou, Y.; Li, G.; Zhang, Y. (2015-06-11)
      Article
      Accés obert
      Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which make it almost impossible to quantify to ...
    • 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 ...
    • Random Forest identification of the thin disc, thick disc, and halo Gaia-DR2 white dwarf population 

      Torres Gil, Santiago; Cantero, C.; Rebassa Mansergas, Alberto; Skorobogatov, G.; Jiménez Esteban, F. M.; Solano Márquez, Enrique (Oxford University Press, 2019-03-13)
      Article
      Accés obert
      Gaia-DR2 has provided an unprecedented number of white dwarf candidates of ourGalaxy. In particular, it is estimated thatGaia-DR2 has observed nearly 400 000 ofthese objects and close to 18 000 up to 100 pc from the Sun. ...
    • Revisiting the luminosity function of single halo white dwarfs 

      Cojocaru, Elena Ruxandra; Torres Gil, Santiago; Althaus, Leandro G.; Isern Vilaboy, Jordi; García-Berro Montilla, Enrique (EDP Sciences, 2015-09-01)
      Article
      Accés obert
      Context. White dwarfs are the fossils left by the evolution of low- and intermediate-mass stars, and have very long evolutionary timescales. This allows us to use them to explore the properties of old populations, like the ...
    • Testing the initial-final mass relationship of white dwarfs 

      Catalán Ruiz, Silvia; Isern Vilaboy, Jordi; García-Berro Montilla, Enrique; Ribas Canudas, Ignasi (2009-06-01)
      Article
      Accés restringit per política de l'editorial
      In this contribution we revisit the initial-final mass relationship of white dwarfs, which links the mass of a white dwarf with that of its progenitor in the main-sequence. Although this function is of paramount importance ...
    • The effects of metallicity on the Galactic disk population of white dwarfs 

      Cojocaru, Elena Ruxandra; Torres Gil, Santiago; Isern Vilaboy, Jordi; García-Berro Montilla, Enrique (2014-06)
      Article
      Accés obert
      Context. It has been known for a long time that stellar metallicity plays a significant role in the determination of the ages of the different Galactic stellar populations, when main sequence evolutionary tracks are employed. ...
    • The mass function of hydrogen-rich white dwarfs: robust observational evidence for a distinctive high-mass excess near 1 M-circle dot 

      Rebassa Mansergas, Alberto; Rybicka, M.; Liu, X.; Han, Z.; García-Berro Montilla, Enrique (2015-09-11)
      Article
      Accés obert
      The mass function of hydrogen-rich atmosphere white dwarfs has been frequently found to reveal a distinctive high-mass excess near 1 M-circle dot. However, a significant excess of massive white dwarfs has not been detected ...
    • The white dwarf cooling sequence of NGC 6791: an unique tool for stellar astrophysics 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Renedo Rouco, Isabel; Camacho Díaz, Judit; Althaus, Leandro Gabriel; Córsico, Alejandro Hugo; Salaris, Maurizio; Isern Vilaboy, Jordi (2011)
      Article
      Accés obert
      Context. NGC 6791 is a well-studied, metal-rich open cluster that is so close to us that it can be imaged down to luminosities fainter than that of the termination of its white-dwarf cooling sequence, thus allowing for ...