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Multiwavelength Observations of the Runaway Binary HD 15137
M. Virginia McSwain, Michael De Becker, Mallory S. E. Roberts +6
HD 15137 is an intriguing runaway O-type binary system that offers a rare opportunity to explore the mechanism by which it was ejected from the open cluster of its birth. Here we p…
Non-radial Pulsations in the Open Cluster NGC 3766
Rachael M. Roettenbacher, Ernest C. Amouzou, M. Virginia McSwain
Non-radial pulsations (NRPs) are a proposed mechanism for the formation of decretion disks around Be stars and are important tools to study the internal structure of stars. NGC 376…
Analysis of B and Be Star Populations of the Double Cluster h and chi Persei
Amber N. Marsh, M. Virginia McSwain, Thayne Currie
We present blue optical spectra of 92 members of h and chi Per obtained with the WIYN telescope at Kitt Peak National Observatory. From these spectra, several stellar parameters we…
HD 69686: A Mysterious High Velocity B Star
Wenjin Huang, Douglas R. Gies, M. Virginia McSwain
We report on the discovery of a high velocity B star, HD 69686. We estimate its space velocity, distance, surface temperature, gravity, and age. With these data, we are able to rec…
The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1
S. M. Caballero-Nieves, D. R. Gies, C. T. Bolton +8
We present an examination of high resolution, ultraviolet spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the massive X-ray binary HD 2…
Research Science and Education: The NSF's Astronomy and Astrophysics Postdoctoral Fellowship
Dara Norman, Marcel Agueros, Timothy M. Brown +29
The NSF's Astronomy and Astrophysics Postdoctoral Fellowship (AAPF) is exceptional among the available postdoctoral awards in Astronomy and Astrophysics. The fellowship is one of t…