Discovery of an O VI Emitting Nebula around the Hot White Dwarf KPD 0005+5106

Details Discovery of an O VI Emitting Nebula around the Hot White Dwarf KPD 0005+5106 Discovery of an O VI Emitting Nebula around the Hot White Dwarf KPD 0005+5106

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..348..322o&link_type=abstract

Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE ASP Conference Series, Vol. 348, Proceedings of the Confe

Astronomy and Astrophysics

Astrophysics

Scientific paper

A survey of diffuse interstellar sight lines observed with the Far Ultraviolet Spectroscopic Explorer has led to the serendipitous discovery of a high-ionization nebula around the hot white dwarf KPD 0005+5106. The nebula has an O VI λ1032 surface brightness of up to 25,000 photons s-1 cm-2 sr-1, making it the brightest region of extended O VI emission in our survey. Photoionization models using the incident white dwarf continuum successfully reproduce the observed O VI intensity. The O VI emission arises in the highly ionized inner region of a planetary nebula around KPD 0005+5106. This newly discovered nebula may be one member of a class of high-ionization planetary nebulae that are difficult to detect in the optical, but which can be easily identified in the ultraviolet.

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