FUSE observations of the resonance OVI doublet in Sand 2 (WO), the fastest stellar wind known.

Details FUSE observations of the resonance OVI doublet in Sand 2 (WO), the fastest stellar wind known. FUSE observations of the resonance OVI doublet in Sand 2 (WO), the fastest stellar wind known.

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.0624c&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #06.24; Bulletin of the American Astronomical Society, Vol. 31, p.1378

Astronomy and Astrophysics

Astronomy

Scientific paper

Oxygen sequence (WO-type) Wolf-Rayet stars represent the final, brief phase in the evolution of the most massive stars prior to a SN explosion. They are characterised by extremely broad, high excitation oxygen and carbon emission lines in their UV and optical spectrum. Sand 2 in the LMC is the only single WO star for which far-UV FUSE observations of the 1032, 1038 Angstroms OVI resonance doublet are possible, and has the fastest continuous wind of any known star ( 4,500 km/s!). We will carry out a spectral synthesis of FUSE observations of Sand 2 using state-of-the-art models -- supplemented by UV HST and ground-based MSSSO optical spectroscopy -- to help address the exact evolutionary status of WO stars. This work is supported by NASA contract NAS5-32985.

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