An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs

Details An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99r.136d&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.136

Astronomy and Astrophysics

Astrophysics

Scientific paper

We report on a detailed analysis of cool white dwarfs showing carbon molecular bands (DQ stars) or metallic lines (DZ stars). Photometric and spectroscopic observations of a large sample of DQ and DZ stars are analyzed with new model atmospheres appropriate for these stars in order to derive improved atmospheric parameters (Teff, log g, and chemical abundances). We show how the presence of molecular and metallic features observed in the spectra of DQ and DZ stars provides us with a unique opportunity to probe the physical conditions met in their atmospheres. We discuss the astrophysical implications of our results on our understanding of cool white dwarfs, notably on the thickness of the helium layer, the chemical composition, and the temperature scale of these stars.

Affiliated with

Also associated with

No associations

Rating

An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Improved Model Atmosphere Analysis of Cool DQ and DZ White Dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-856615