The orbital period of CI Cam (XTE J0421+560)

Details The orbital period of CI Cam (XTE J0421+560) The orbital period of CI Cam (XTE J0421+560)

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..416....1b&link_type=abstract

The Astronomer's Telegram, #416

Astronomy and Astrophysics

Astronomy

8

Optical, Binaries, Transients, Variables

Scientific paper

CI Cam is a known B[e] star and X-ray transient. We perform photometric and medium-resolution spectroscopic monitoring of CI Cam in the quiet state during 7 years since April 1998 outburst. We have detected orbital light variations with the period of 19.41+/-0.02 day. The modulation has an amplitude of 0.032 mag in V band. The epoch of maximum is at JD 2452200.75. We find large regular variations of the radial velocity in HeII 4686A emission line with this photometric period.

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