15 citations · 39 across the 7 of their papers we have counts for
8 papers
Visual Orbits of Spectroscopic Binaries with the CHARA Array. V. HD 210763 and HD 221950
Kathryn V. Lester, Josephine Singleton, Alexandra M. Twomey +16
We present the visual orbits and dynamical masses of two longer period spectroscopic binary stars, HD 210763 and HD 221950, using long baseline interferometry with the CHARA Array…
A Spectroscopic and Interferometric Study of W Serpentis Stars. I. Circumbinary Outflow in the Interacting Binary W Serpentis
Katherine Shepard, Douglas R. Gies, Gail H. Schaefer +6
W Serpentis is an eclipsing binary system and the prototype of the Serpentid class of variable stars. These are interacting binaries experiencing intense mass transfer and mass los…
MWC656: A Be+BH or a Be+sdO?
Th. Rivinius, R. Klement, S. D. Chojnowski +3
MWC656 has been reported as classical Be star with a black hole companion. Revisited spectral variability properties render this unlikely, with a hot subdwarf more probable.
Spectroscopic Line Modeling of the Fastest Rotating O-type Stars
Katherine Shepard, Douglas R. Gies, Lex Kaper +1
We present a spectroscopic analysis of the most rapidly rotating stars currently known, VFTS 102 ( km s; O9: Vnnne+) and VFTS 285 ($v_{e} \sin i =…
Mass Transfer as an Explanation for the Lifetime-Travel Time Discrepancy in IT Librae
Peter Wysocki, Douglas Gies, Katherine Shepard +2
The eclipsing binary IT Librae is an unusual system of two B-type stars that is situated about 1 kpc above the galactic plane. The binary was probably ejected from its birthplace i…
The Transformative Journey of HD 93521
Douglas R. Gies, Katherine Shepard, Peter Wysocki +1
HD 93521 is a massive, rapidly rotating star that is located about 1 kpc above the Galactic disk, and the evolutionary age for its estimated mass is much less than the time-of-flig…
Spectroscopic Detection of the Pre-White Dwarf Companion of Regulus
Douglas R. Gies, Kathryn V. Lester, Luqian Wang +6
Mass transfer in an interacting binary will often strip the mass donor of its entire envelope and spin up the mass gainer to near critical rotation. The nearby B-type star Regulus…
HST/COS Spectra of the Wind Lines of VFTS 102 and 285
Katherine Shepard, Douglas R. Gies, Kathryn V. Lester +5
Rapid rotation in massive stars imposes a latitudinal variation in the mass loss from radiatively driven winds that can lead to enhanced mass loss at the poles (with little angular…