Browsing Exact and Earth Sciences by Author "Vanderbosch, Zachary"

Now showing items 1-2 of 2

    • The McDonald Observatory search for pulsating sdA stars : asteroseismic support for multiple populations 

      Bell, Keaton; Pelisoli, Ingrid Domingos; Kepler, Souza Oliveira; Brown, Warren R.; Winget, Donald Earl; Winget, K. I.; Vanderbosch, Zachary; Castanheira, Bárbara Garcia; Hermes, James J.; Montgomery, Michael Houston; Koester, Detlev (2018) [Journal article]
      Context. The nature of the recently identified “sdA” spectroscopic class of stars is not well understood. The thousands of known sdAs have H-dominated spectra, spectroscopic surface gravity values between main sequence ...

    • The pulsating helium-atmosphere white dwarfs : I. New DBVs from the Sloan Digital Sky Survey 

      Vanderbosch, Zachary; Hermes, James J.; Winget, Donald Earl; Montgomery, Michael Houston; Bell, Keaton; Nitta, Atsuko; Kepler, Souza Oliveira (2022) [Journal article]
      We present a dedicated search for new pulsating helium-atmosphere (DBV) white dwarfs from the Sloan Digital Sky Survey using the McDonald 2.1 m Otto Struve Telescope. In total we observed 55 DB and DBA white dwarfs with ...