Metal abundances in helium-rich white dwarf atmospheres

Details Metal abundances in helium-rich white dwarf atmospheres Metal abundances in helium-rich white dwarf atmospheres

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...155..356z&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 155, no. 2, Feb. 1986, p. 356-370.

Astronomy and Astrophysics

Astrophysics

28

Metallicity, Stellar Atmospheres, Stellar Spectra, White Dwarf Stars, Carbon, Helium, Hydrogen, Stellar Evolution, Stellar Mass Accretion, Ultraviolet Spectra

Scientific paper

IUE observations of L745-46A, L119-34 and Ross 640 reveal the presence of Si, Fe, C, and very strong Mg II lines. These spectra, together with optical observations of white dwarfs with Ca II lines (type DZ) are analyzed within a network of model atmospheres with varying H/He, C/He and metals/He ratios. The influence of non-negligible H content (electron donor) is discussed. The final abundances are presented. Carbon is present in amounts comparable, perhaps somewhat smaller, than in white dwarfs of spectral type DQ (C2 and UV C I lines). Its presence supports the carbon dredge-up hypothesis.

Affiliated with

Also associated with

No associations

Rating

Metal abundances in helium-rich white dwarf atmospheres 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 Metal abundances in helium-rich white dwarf atmospheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal abundances in helium-rich white dwarf atmospheres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1673708