A new view of the supersoft x-ray source cal 87 observedWith xmm-newton

@article{Orio2004ANV,
  title={A new view of the supersoft x-ray source cal 87 observedWith xmm-newton},
  author={Marina Orio and Ken Ebisawa and John Heise and Wouter Hartmann},
  journal={Revista Mexicana De Astronomia Y Astrofisica},
  year={2004},
  volume={20},
  pages={210}
}
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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