SIMBAD references

2006A&A...450..331C - Astronomy and Astrophysics, volume 450, 331-337 (2006/4-4)

Analysis of IUE spectra of helium-rich white dwarf stars.

CASTANHEIRA B.G., KEPLER S.O., HANDLER G. and KOESTER D.

Abstract (from CDS):

We studied the class of DB white dwarf stars, using re-calibrated UV spectra for thirty four DBs obtained with the IUE satellite. By comparing the observed energy distributions with model atmospheres, we simultaneously determine spectroscopic distances (d), effective temperature (Teff), and surface gravities (logg). Using parallax measurements and previous determinations of Teff and logg from optical spectra, we can study whether the atmospheres of eleven DB stars are consistent with pure He or have a small amount of H contamination. We also report on our observations of seventeen stars with Teff close to the DB instability strip through time series photometry and found them to be non variable within our detection limits.

Abstract Copyright:

Journal keyword(s): stars: white dwarfs - stars: variables: general - stars: oscillations - ultraviolet: stars

Simbad objects: 46

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2006A&A...450..331C and select 'bookmark this link' or equivalent in the popup menu


2021.04.13-12:09:00

© Université de Strasbourg/CNRS

    • Contact