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Optical observations of the ultrahigh-excitation Wolf-Rayet star Sanduleak 3

BARLOW, MJ; BLADES, JC; HUMMER, DG; (1980) Optical observations of the ultrahigh-excitation Wolf-Rayet star Sanduleak 3. Astrophysical Journal , 241 L27-L31. 10.1086/183353. Green open access

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Abstract

Recombination lines of O VII, O VIII, and C V have been identified in the optical spectrum of an O VI Wolf-Rayet star, representing the first non-X-ray detection of these ions in astronomical spectra and implying excitation energies in excess of 800 eV. Rapid variations on a time scale of about 150 s have been observed in the profile of one of the O VII lines.

Type: Article
Title: Optical observations of the ultrahigh-excitation Wolf-Rayet star Sanduleak 3
Open access status: An open access version is available from UCL Discovery
DOI: 10.1086/183353
Publisher version: https://doi.org/10.1086/183353
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Hot Stars; Ion Recombination; Line Spectra; Oxygen; Stellar Spectra; Wolf-Rayet Stars; Carbon; Emission Spectra; Ionization Potentials; Planetary Nebulae; Astrophysics; Line Identifications:Wolf-Rayet Stars; Spectra:Wolf-Rayet Stars
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10096225
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