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19 papers · 1 filter
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…
Fast Alternating Linearization Methods for Minimizing the Sum of Two Convex Functions
Donald Goldfarb, Shiqian Ma, Katya Scheinberg
We present in this paper first-order alternating linearization algorithms based on an alternating direction augmented Lagrangian approach for minimizing the sum of two convex funct…
Brownian limits, local limits and variance asymptotics for convex hulls in the ball
Pierre Calka, Tomasz Schreiber, J. E. Yukich
Schreiber and Yukich [Ann. Probab. 36 (2008) 363-396] establish an asymptotic representation for random convex polytope geometry in the unit ball , in terms o…
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…
Ultraviolet Study of the Active Interacting Binary Star R Arae using Archival IUE Data
Phillip A. Reed, George E. McCluskey, Yoji Kondo +7
The eclipsing and strongly interacting binary star system R Arae (HD149730) is in a very active and very short-lived stage of its evolution. R Ara consists of a B9V primary and an…