The Orbital Period of the B[e]/X-ray Binary CI Cam/XTE J0421+560

Details The Orbital Period of the B[e]/X-ray Binary CI Cam/XTE J0421+560 The Orbital Period of the B[e]/X-ray Binary CI Cam/XTE J0421+560

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..355..305b&link_type=abstract

Stars with the B[e] Phenomenon. ASP Conference Series, Vol. 355, Proceedings of the Conference Held 10-16 July, 2005, at the Isl

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Our seven-year long photometric and spectroscopic monitoring of CI Cam reveals the low amplitude light variation with a period of 19.41 ± 0.02 day and strong Doppler shifts in the He II 4686 Å emission line, phased with this period. The source of this emission moves on an elliptical (e=0.62) orbit around a massive (M ≥ 12 M_&sun;) B4 III-V[e] star. It is very likely that the fast moving companion is a white dwarf surrounded by an accretion disk.

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