A 2.4-80 micron spectrophotometric study of SS433 with ISO

Details A 2.4-80 micron spectrophotometric study of SS433 with ISO A 2.4-80 micron spectrophotometric study of SS433 with ISO

2001-12-14

arxiv.org/abs/astro-ph/0112339v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, to appear in "Neutron Stars in Supernova Remnants" (ASP Conference Proceedings), eds P. O. Slane and B. M.

Scientific paper

We present ISOPHOT spectrophotometric observations of SS433 at four different orbital phases in 1996 and 1997. The HeI+HeII lines in both spectra of SS433 and the Wolf-Rayet star WR147, a WN8+BO5 binary system, closely match. The 2.5-12 micron continuum radiation is due to an expanding wind free-free emission in an intermediate case between optically thick and optically thin regime. A rough mass loss rate evaluation gives about 1.4 10^{-4} M_sun/yr. Results are consistent with a Wolf-Rayet-like companion to the compact object in SS433.

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