Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.1805m&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #18.05; Bulletin of the American Astronomical Society, Vol. 25, p.1321
Astronomy and Astrophysics
Astronomy
4
Scientific paper
PSR 1259-63 was recently found to be the first radio pulsar with a massive nondegenerate companion, the Be star SS 2883. In January, 1994, the pulsar in its highly eccentric, long-period orbit will reach periastron, at which time it is expected to collide with the wind and the circumstellar material of SS 2883. A large multiwavelength campaign has been set up to observe this event. I obtained IUE observations of SS 2883 in 1992, when the stars in this system were near maximum separation. A deep blueshifted C IV 1550{ Angstroms} absorption feature is evident, demonstrating that there is a wind. The terminal velocity of the wind is estimated to be 1350 +/- 200 km/s. An approximate mass loss rate is derived, and the spectral type of SS 2883 is estimated based on the IUE spectrum.
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