Navegação por Autor "Gänsicke, Boris"

Resultados 1-4 de 4

    • Analysis of cool DO-type white dwarfs from the Sloan Digital Sky Survey data release 10 

      Reindl, Nicole; Rauch, Thomas; Werner, Klaus; Kepler, Souza Oliveira; Gänsicke, Boris; Fusillo, Nicola Pietro Gentile (2014) [Artigo de periódico]
      We report on the identification of 22 new cool DO-type white dwarfs (WDs) detected in data release 10 (DR10) of the Sloan Digital Sky Survey (SDSS). Among them, we found one more member of the so-called hot-wind DO WDs, ...

    • Evidence from K2 for Rapid Rotation in the Descendant of an Intermediate-mass Star 

      Hermes, James J.; Kawaler, Steven D.; Romero, Alejandra Daniela; Kepler, Souza Oliveira; Tremblay, Pier-Emmanuel; Bell, Keaton; Dunlap, Bart; Montgomery, Michael Houston; Gänsicke, Boris; Clemens, J. Christopher; Dennihy, Erik D.; Redfield, Seth (2017) [Artigo de periódico]
      Using patterns in the oscillation frequencies of a white dwarf observed by K2, we have measured the fastest rotation rate (1.13 ± 0.02 hr) of any isolated pulsating white dwarf known to date. Balmer-line fits to follow-up ...

    • SDSS J124043.01+671034.68 : the partially burned remnant of a low-mass white dwarf that underwent thermonuclear ignition? 

      Gänsicke, Boris; Koester, Detlev; Raddi, Roberto; Toloza, Odette F.; Kepler, Souza Oliveira (2020) [Artigo de periódico]
      The white dwarf SDSS J124043.01+671034.68 (SDSS J1240+6710) was previously found to have an oxygen-dominated atmosphere with significant traces of neon, magnesium, and silicon. A possible origin via a violent late thermal ...

    • The frequency of gaseous debris discs around white dwarfs 

      Manser, Christopher; Gänsicke, Boris; Fusillo, Nicola Pietro Gentile; Ashley, Richard P.; Breedt, Elmé; Hollands, Mark; Izquierdo, Paula; Pelisoli, Ingrid Domingos (2020) [Artigo de periódico]
      A total of 1–3 per cent of white dwarfs are orbited by planetary dusty debris detectable as infrared emission in excess above the white dwarf flux. In a rare subset of these systems, a gaseous disc component is also detected ...