Other
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..334...49f&link_type=abstract
14th European Workshop on White Dwarfs, ASP Conference Series, Vol. 334 Proceedings of a meeting held at Kiel, July 19-23, 2004
Other
12
Scientific paper
We present a model to account for the presence of traces of carbon in hot (˜20,000 K to ˜30,000 K) DB white dwarfs. Recent observations have revealed that, as a class, these stars appear to be polluted by traces of carbon and, interestingly, there appears to be no other significant pollutant. Contrary to cooler DB stars, they do not show signs of accretion, and we suggest instead that the carbon observed in their photospheres is primordial and that its presence is most likely due to a mechanism that slows down its downward diffusion. Such a mechanism could be a residual wind and we further investigate that possibility here. Within that framework, we suggest that a transition might exist along the DB cooling track around Teff ˜ 20,000 K where dying winds are replaced by accretion.
Brassard Pierre
Fontaine Gérard
No associations
LandOfFree
Carbon in Hot DB White Dwarfs: A New Challenge for the Theory of the Spectral Evolution of 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 Carbon in Hot DB White Dwarfs: A New Challenge for the Theory of the Spectral Evolution of White Dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon in Hot DB White Dwarfs: A New Challenge for the Theory of the Spectral Evolution of White Dwarfs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1434287