419 citations
- University of PotsdamDE42 papers
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6 papers · 2 filters
Ultraviolet Spectropolarimetry with Polstar: Clumping and Mass-loss Rate Corrections
Ken Gayley, Jorick S. Vink, Asif ud-Doula +13
The most massive stars are thought to lose a significant fraction of their mass in a steady wind during the main-sequence and blue supergiant phases. This in turn sets the stage fo…
Ultraviolet Spectropolarimetry:Conservative and Nonconservative Mass Transfer in OB Interacting Binaries
Geraldine J. Peters, Ken Gayley, Richard Ignace +11
One objective of the Polstar spectropolarimetry mission is to characterize the degree of nonconservative mass transfer that occurs at various stages of binary evolution, from the i…
Variability in Proto-Planetary Nebulae: VIII. A New Sample of Southern Hemisphere Objects
Bruce J. Hrivnak, Gary Henson, Todd C. Hillwig +5
As part of our continuing study of light variability in proto-planetary nebulae (PPNe), we present the results from a long-term study of nine southern hemisphere objects. We have m…
Identifying low-amplitude pulsating stars through microlensing observations
Sedighe Sajadian, Richard Ignace, Hilding Neilson
One possibility for detecting low-amplitude pulsational variations is through gravitational microlensing. During a microlensing event, the temporary brightness increase leads to im…
A scaling relationship for non-thermal radio emission from ordered magnetospheres: from the top of the Main Sequence to planets
P. Leto, C. Trigilio, J. Krticka +20
In this paper, we present the analysis of incoherent non-thermal radio emission from a sample of hot magnetic stars, ranging from early-B to early-A spectral type. Spanning a wide…
Modeling the Variable Polarization of epsilon Aurigae In and Out of Eclipse
Richard Ignace, Gary Henson, Hilding Neilson +1
The eclipsing binary epsilon Aur is unique in being a very long-period binary involving an evolved, variable F star and a suspected B main-sequence star enshrouded in an opaque cir…