Browsing by Author "Xu, Siyi"

Now showing items 1-3 of 3

    • Infrared excesses around bright white dwarfs from Gaia and unWISE. II 

      Lai, Samuel; Dennihy, Erik; Xu, Siyi; Nitta, Atsuko; Kleinman, Scot J.; Leggett, Sandy; Bonsor, Amy; Hodgkin, Simon; Rebassa Mansergas, Alberto; Rogers, L. K. (Institute of Physics (IOP), 2021-10-20)
      Article
      Open Access
      Infrared excesses around white dwarf stars indicate the presence of various astrophysical objects of interest, including companions and debris disks. In this second paper of a series, we present follow-up observations ...

    • 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 ...

    • 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, ...