Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...106...67d&link_type=abstract
Astronomy and Astrophysics, vol. 106, no. 1, Feb. 1982, p. 67-69.
Astronomy and Astrophysics
Astrophysics
1
Absorption Spectra, Carbon, Carbon Stars, Ubv Spectra, White Dwarf Stars, Calibrating, Stellar Parallax, Ultraviolet Spectra
Scientific paper
B and V colors are shown to be almost identically affected by blanketing due to C2 absorption bands in the carbon white dwarfs G 47-18 and G 99-37. Critical examination of the color-absolute magnitude relation in carbon white dwarfs with trigonometric parallaxes has led to two DC white dwarfs which, because of the strong absorption due to carbon revealed by ultraviolet observations, are added to the calibration undertaken. It is concluded that new UV observations are needed to improve understanding of the link between carbon and DC dwarfs.
Durret Florence
Vauclair Gerard
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