228 citations · 2k across the 35 of their papers we have counts for
4 papers · 1 filter
The Be Star HD 215227: A Candidate Gamma-ray Binary
S. J. Williams, D. R. Gies, R. A. Matson +4
The emission-line Be star HD 215227 lies within the positional error circle of the newly identified gamma-ray source AGL J2241+4454. We present new blue spectra of the star, and we…
H-alpha Emission Variability in the gamma-ray Binary LS I +61 303
M. Virginia McSwain, Erika D. Grundstrom, Douglas R. Gies +1
LS I +61 303 is an exceptionally rare example of a high mass X-ray binary (HMXB) that also exhibits MeV-TeV emission, making it one of only a handful of "gamma-ray binaries". Here…
The Membership and Distance of the Open Cluster Collinder 419
Lewis C. Roberts, Douglas R. Gies, J. Robert Parks +6
The young open cluster Collinder 419 surrounds the massive O star, HD 193322, that is itself a remarkable multiple star system containing at least four components. Here we present…
Spectral Energy Distributions of Be and Other Massive Stars
Y. Touhami, N. D. Richardson, D. R. Gies +7
We present spectrophotometric data from 0.4 to 4.2 microns for bright, northern sky, Be stars and several other types of massive stars. Our goal is to use these data with ongoing,…