Hubble Space Telescope FOS observations of KPD 0005 + 5106 - A subluminous WN-WC descendant with ongoing mass outflow?

Details Hubble Space Telescope FOS observations of KPD 0005 + 5106 - A subluminous WN-WC descendant with ongoing mass outflow? Hubble Space Telescope FOS observations of KPD 0005 + 5106 - A subluminous WN-WC descendant with ongoing mass outflow?

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396l..79s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 396, no. 2, Sept. 10, 1992, p. L79-L82. Research supported by Spa

Astronomy and Astrophysics

Astrophysics

18

Abundance, Hubble Space Telescope, Stellar Spectra, Stellar Spectrophotometry, White Dwarf Stars, Carbon, Faint Objects, Iron, Line Spectra, Nitrogen, Oxygen Spectra, Wolf-Rayet Stars

Scientific paper

The results are reported of spectroscopic observations of the ultrahigh excitation, helium-rich, prewhite-dwarf KPD 0005 + 5106 obtained with the HST Faint Object Spectrograph (FOS) in 1991 May and July with the red (FOS/RD) and blue (FOS/BL) Digicon detectors. The data reveal a rich line spectrum both in absorption and in emission with ultra-high excitation species present including O VIII, N V, possibly C V, Fe VI, Fe VII, and numerous weaker high n, low l, transitions of C IV and O VI as well as the predominant He II (3 yields n) and He II (Balmer alpha) absorption lines. There is a strong emission complex at 2981 A which is identified as primarily due to three transitions of N V commonly seen in WN Wolf-Rayet spectra. Evidence is presented that high-ionization species in emission (O VIII, N V, C IV, Si IV) and in absorption (He II, Fe VI, Fe VIII) are longward-shifted relative to the far-UV resonance (circumstellar) absorption lines by 25-50 km/s.

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