A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton

Details A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton A New View of the Supersoft X-Ray Source Cal 87 Observed with XMM-Newton

2004-02-02

arxiv.org/abs/astro-ph/0402040v1

Astronomy and Astrophysics

Astrophysics

To appear in: Compact Binaries in the Galaxy and Beyond, IAU Coll. 194, editors E. Sion and G. Tovmassian

Scientific paper

Cal 87 was observed with XMM-Newton in April of 2003. The source shows a rich
emission line spectrum, where lines can be identified if they are red-shifted
by 700-1200 km/s. These lines seem to have been emitted in a wind from the
system. The eclipse is observed to be shifted in phase by 0.03 phi(orb), where
phi(orb) is the phase of the optical light curve.

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