[ITAL]Far Ultraviolet Spectroscopic Explorer[/ITAL] Spectroscopy of the O [CSC]vi[/CSC] Resonance Doublet in Sand 2 (WO) | Zendy

P. A. Crowther | Zendy; A. W. Fullerton | Zendy; D. J. Hillier | Zendy; Ken Brownsberger | Zendy; Luc Dessart | Zendy; A. J. Willis | Zendy; Orsola De Marco | Zendy; M. J. Barlow | Zendy; J. B. Hutchings | Zendy; D. Massa | Zendy; D. C. Morton | Zendy; G. Sonneborn | Zendy

Open Access

[ITAL]Far Ultraviolet Spectroscopic Explorer[/ITAL] Spectroscopy of the O [CSC]vi[/CSC] Resonance Doublet in Sand 2 (WO)

Author(s) -

P. A. Crowther,

A. W. Fullerton,

D. J. Hillier,

Ken Brownsberger,

Luc Dessart,

A. J. Willis,

Orsola De Marco,

M. J. Barlow,

J. B. Hutchings,

D. Massa,

D. C. Morton,

G. Sonneborn

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312783

Subject(s) - physics , spectroscopy , spectrograph , astrophysics , stars , space telescope imaging spectrograph , supernova , line (geometry) , ultraviolet , astronomy , resonance (particle physics) , wolf–rayet star , hubble space telescope , spectral line , atomic physics , optics , geometry , mathematics

We present Far Ultraviolet Spectroscopic Explorerspectroscopy of Sand 2, an LMC WO-type Wolf-Rayet star, revealing the O vi resonance P Cygni doublet at 1032-1038 A ˚. These data are combined with Hubble Space Telescope Faint Object Spectrograph ultraviolet and Mount Stromlo 2.3 m optical spectroscopy and analyzed using a spherical, non-LTE, line-blanketed code. Our study reveals exceptional stellar parameters: T » ⁄ ' of 10%. Elemental abundances of and by number qualitatively support pre- 10.10 C/He » 0.7 5 0.2 O/He » 0.1520.05 vious recombination line studies. We confirm that Sand 2 is more chemically enriched in carbon than LMC WC stars and that it is expected to undergo a supernova explosion within the next yr. 4 5 # 10

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