2007/09/04 by J. E. S. Costa, S. O. Kepler, D. E. Winget +80
Physics and Astronomy · #Astronomy and Astrophysical Research #Measure (data warehouse) #Photometry (optics) #Rotation (mathematics) #Rotation period #Scientific Research and Discoveries #Spectral line #Stellar rotation #Stellar, planetary, and galactic studies #Stratification (seeds) #Telescope #astro-ph
paper · pdf · doi:10.1051/0004-6361:20053470
published as 2008A&A...477..627 · 25 pages, 11 figures, appendix with 6 long tables. The resolution of some of the figures were changed and some of them can appear with a bit lower quality
openalex publication_date 2007/09/04 · arxiv created 2007/12/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Context.PG 1159-035, a pre-white dwarf with 140 000 K, is the prototype of both two classes: the PG 1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035 photometric data obtained with the Whole Earth Telescope (WET) showed a rich frequency spectrum allowing the identification of 122 pulsation modes. Analyzing the periods of pulsation, it is possible to measure the stellar mass, the rotational period and the inclination of the rotation axis, to estimate an upper limit for the magnetic field, and even to obtain information about the inner stratification of the star.