A strong absorption feature near 1900 A in the spectrum of the C2 white dwarf LP 145 141

Details A strong absorption feature near 1900 A in the spectrum of the C2 white dwarf LP 145 141 A strong absorption feature near 1900 A in the spectrum of the C2 white dwarf LP 145 141

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.157..333k&link_type=abstract

The second European International Ultraviolet Explorer (IUE) Conference, held 26-28 March 1980 in Tübingen, West Germany. Edited

Astronomy and Astrophysics

Astronomy

2

Carbon, Iue, Ultraviolet Astronomy, White Dwarf Stars, Absorption Spectra, Abundance, Atmospheric Models, Carbon Monoxide, Helium, Oxygen, Stellar Atmospheres, Swan Bands

Scientific paper

An absorption feature of exceptional strength was detected in the spectrum of the cool degenerate lambda 4670 or C2 star LP 145-141. This feature is tentatively identified as a dissociation continuum of C2. Theoretical calculations of dissociation and ionization equilibria confirm that molecule formation is strongly favored in the helium-rich, high pressure atmosphere of this object, with CO, C2, or O2 being dominant, depending on the He/C and C/O ratios.

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