Analysis of DA White Dwarfs from the McCook & Sion Catalog
Abstract
The Sloan Digital Sky Survey has already doubled the number of spectroscopically identified white dwarfs. However, there remains a wealth of white dwarfs in the McCook & Sion catalog for which little or nothing is known. We have thus undertaken a spectroscopic survey of all Northern hemisphere DA white dwarfs from this catalog in order to (1) confirm the spectroscopic classification, and (2) provide measurements of Teff and log g for each star. As part of this project, we have also secured spectroscopic data for all DA stars with high-speed photometric measurements available, in order to study the purity of the ZZ Ceti instability strip, which has recently been challenged, once again.
Cite
@article{arxiv.astro-ph/0503107,
title = {Analysis of DA White Dwarfs from the McCook & Sion Catalog},
author = {A. Gianninas and P. Bergeron and P. Dufour},
journal= {arXiv preprint arXiv:astro-ph/0503107},
year = {2007}
}
Comments
4 pages, 3 figures, 14th European Workshop on White Dwarfs, ASP Conference Series, in press