AAS 199th meeting, Washington, DC, January 2002
Session 133. Variable Stars: Searchers, Data, Analysis
Display, Thursday, January 10, 2002, 9:20am-4:00pm, Exhibit Hall

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[133.07] Spectroscopy of Be Stars Kappa Draconis and 60 Cygnus

K. V. Croxall (Brigham Young University), N. D. Morisson, K. S. Bjorkman (University of Toledo)

New spectroscopic data for Be stars \kappa Dra and 60 Cyg were collected and analyzed. For purposes of clarifying data, by removing water lines, a library of telluric calibration files, for use at Ritter Observatory, were created. Of special note is the loss of emission by the star 60 Cyg in the month of June 2001. Equivalent width of the H\alpha line, radial velocities, delta V, V/R quantities and polarization data were analyzed to reveal new periods for each star. While the periods are still in preliminary stages, the periods seem very promising. Most striking is an apparent period of about 2000 days in the equivalent width of \kappa Dra. Data is also suggestive that the 61.55-day period of \kappa Dra may not be due to binary motion as was previously reported. Strong evidence for a correlation between the equivalent width of the H\alpha line and the polarization is found. Possible implications on the evolution of the star are discussed.


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