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The B and Be Star Population of NGC 3766
M. Virginia McSwain, Wenjin Huang, Douglas R. Gies +2
We present multiple epochs of H-alpha spectroscopy for 47 members of the open cluster NGC 3766 to investigate the long term variability of its Be stars. Sixteen of the stars in thi…
A Spectroscopic Study of Mass Outflows in the Interacting Binary RY Scuti
E. D. Grundstrom, D. R. Gies, T. C. Hillwig +5
The massive interacting binary RY Scuti is an important representative of an active mass-transferring system that is changing before our eyes and which may be an example of the for…
Radial Velocities of Six OB Stars
T. S. Boyajian, D. R. Gies, E. K. Baines +7
We present new results from a radial velocity study of six bright OB stars with little or no prior measurements. One of these, HD 45314, may be a long-period binary, but the veloci…
The Long Period, Massive Binaries HD 37366 and HD 54662: Potential Targets for Long Baseline Optical Interferometry
T. S. Boyajian, D. R. Gies, J. P. Dunn +8
We present the results from an optical spectroscopic analysis of the massive stars HD 37366 and HD 54662. We find that HD 37366 is a double-lined spectroscopic binary with a period…
Joint H-alpha and X-Ray Observations of Massive X-Ray Binaries. III. The Be X-ray Binaries HDE 245770 = A 0535+26 and X Persei
E. D. Grundstrom, T. S. Boyajian, C. Finch +9
We present results from an H-alpha monitoring campaign of the Be X-ray binary systems HDE 245770 = A 0535+26 and X Per. We use the H-alpha equivalent widths together with adopted v…