Navegação Ciências Exatas e da Terra por Autor "Napiwotzki, Ralf"

Resultados 1-2 de 2

    • Discovery of eleven new ZZ Ceti stars 

      Reimers, Dieter; Castanheira, Bárbara Garcia; Kepler, Souza Oliveira; Mullally, Fergal; Winget, Donald Earl; Koester, Detlev; Voss, Björn; Kleinman, Scot James; Nitta, Atsuko; Eisenstein, D.J.; Napiwotzki, Ralf (2006) [Artigo de periódico]
      We report the discovery of eleven new ZZ Cetis using telescopes at OPD (Observatório do Pico dos Dias/LNA) in Brazil, the 4.1 m SOAR (Southern Astrophysical Research) telescope at Cerro Pachon, Chile, and the 2.1 m Otto ...

    • Discovery of seven ZZ Ceti stars using a new photometric selection method 

      Voss, Björn; Koester, Detlev; Ostensen, Roy; Kepler, Souza Oliveira; Napiwotzki, Ralf; Homeier, Derek; Reimers, Dieter (2006) [Artigo de periódico]
      We report the detection of non-radial g-mode oscillations in seven relatively bright (14.4 < B < 16.5) DA white dwarf stars from time-series photometry collected at the Nordic Optical Telescope (NOT) at Roque de Los Muchachos ...