2006/06/07 by A. Gianninas, P. Bergeron, G. Fontaine · 64 citations
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Instability #Instability strip #Sign (mathematics) #Space Technology and Applications #Stars #Stellar, planetary, and galactic studies #Surface gravity #White dwarf #astro-ph
paper · pdf · doi:10.1086/506516
published in The Astronomical Journal 132(2), 831-835 (Institute of Physics) · 5 pages, 5 figures, 4 tables, accepted for publication in the Astronomical Journal
arxiv created 2006/06/07 · openalex publication_date 2006/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
As part of an ongoing program to better map the empirical instability strip of pulsating ZZ Ceti white dwarfs, we present a brief progress report based on our last observing season. We discuss here high-speed photometric measurements for six new pulsators. These stars were selected on the basis of preliminary measurements of their effective temperatures and surface gravities, which placed them inside or near the known ZZ Ceti instability strip. We also report detection limits for a number of DA white dwarfs that showed no sign of variability. Finally, we revisit the ZZ Ceti star G232-38, for which we obtained improved high-speed photometry.