Detection and analysis of photospheric CNO features in the ultraviolet spectrum of the hot DO white dwarf PG 1034 + 001

Details Detection and analysis of photospheric CNO features in the ultraviolet spectrum of the hot DO white dwarf PG 1034 + 001 Detection and analysis of photospheric CNO features in the ultraviolet spectrum of the hot DO white dwarf PG 1034 + 001

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...292..477s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 292, May 15, 1985, p. 477-483. Research supported by the Natural Sciences a

Astronomy and Astrophysics

Astrophysics

34

Hot Stars, Planetary Nebulae, Stellar Atmospheres, Stellar Spectra, Ultraviolet Spectra, White Dwarf Stars, Abundance, Carbon, Line Spectra, Nitrogen, Oxygen, Photosphere, Stellar Evolution, Visible Spectrum

Scientific paper

An analysis of PG 1034 + 001 extended to include the high-dispersion IUE spectra and the high-resolution optical multiple-mirror telescope echelle spectra is discussed. The observations reveal the presence of absorption lines (C IV at 1548 and 1551 A, N V at 1238 and 1242 A, and O V at 1371 A) from highly ionized species with large redshifts (+ 40-50) km/s) relative to the interstellar lines. The results of a preliminary abundance analysis of the photospheric lines, together with the results of a search of sharp shortward-shifted features are presented. An interpretation of the observed abundances is made in terms of selective radiative forces acting in a high-temperature photosphere. Some speculations on the evolutionary status of DO stars like PG 1034 + 001 are given.

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