Optical Spectroscopic Observations of CI Camelopardalis

Details Optical Spectroscopic Observations of CI Camelopardalis Optical Spectroscopic Observations of CI Camelopardalis

2008-06-26

arxiv.org/abs/0806.4229v1

Astron.J.133:1478-1484, 2007

Astronomy and Astrophysics

Astrophysics

18 pages, 4 figures, 1 table

Scientific paper

10.1086/511181

We present the results of optical spectroscopic observations of CI Cam. Double-peaked profiles were simultaneously observed for the first time in the hydrogen Balmer, He {\small I} $\lambda$6678 and Fe {\small II} lines during an observational run in 2001 September. An intermediate viewing angle of the circumstellar disk around the B[e] star is consistent with our data. A significant decrease in the intensity of the H$\alpha$ and He {\small I} lines in our 2004 September observations might have been the precursor of a line outburst at the end of 2004. The remarkable increase in the intensity of all lines and the decrease in visual brightness in 2005 might be due to the environment filling with new material ejected during the outburst. The environment of CI Cam is influenced by mass loss from the B[e] star and the outburst of its compact companion.

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