198 citations · 808 across the 41 of their papers we have counts for
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UV Spectropolarimetry with Polstar: Massive Star Binary Colliding Winds
Nicole St-Louis, Kenneth Gayley, D. John Hillier +13
The winds of massive stars are important for their direct impact on the interstellar medium, and for their influence on the final state of a star prior to it exploding as a superno…
Modeling the Optical to Ultraviolet Polarimetric Variability from Thomson Scattering in Colliding Wind Binaries
Richard Ignace, Andrew Fullard, Manisha Shrestha +5
Massive star binaries are critical laboratories for measuring masses and stellar wind mass-loss rates. A major challenge is inferring viewing inclination and extracting information…
New mass estimates for massive binary systems: a probabilistic approach using polarimetric radiative transfer
Andrew G. Fullard, John T. O'Brien, Wolfgang E. Kerzendorf +4
Understanding the evolution of massive binary stars requires accurate estimates of their masses. This understanding is critically important because massive star evolution can poten…
Ultraviolet Spectropolarimetry with Polstar: Massive Star Binary Colliding Winds
Nicole St-Louis, Kenneth Gayley, Desmond John Hillier +13
As sources of chemical enrichment, ionizing radiation and energetic feedback, massive stars drive the ecology of their host galaxies despite their relative rarity, additionally to…
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…
Polarization simulations of stellar wind bow shock nebulae. II. The case of dust scattering
Manisha Shrestha, Hilding R. Neilson, Jennifer L. Hoffman +2
We study the polarization produced by scattering from dust in a bow shock-shaped region of enhanced density surrounding a stellar source, using the Monte Carlo radiative transfer c…
13 Years of P Cygni Spectropolarimetry: Investigating Mass-loss Through H, Periodicity, and Ellipticity
Keyan Gootkin, Trevor Dorn-Wallenstein, Jamie R. Lomax +7
We report on over 13 years of optical and near-ultraviolet spectropolarimetric observations of the famous Luminous Blue Variable (LBV), P Cygni. LBVs are a critical transitional ph…
SN 2014ab: An Aspherical Type IIn Supernova with Low Polarization
Christopher Bilinski, Nathan Smith, G. Grant Williams +20
We present photometry, spectra, and spectropolarimetry of supernova (SN) 2014ab, obtained through days after peak brightness. SN 2014ab was a luminous Type IIn SN ($M_V…
A multi-wavelength search for intrinsic linear polarization in Wolf-Rayet winds
Andrew G. Fullard, Nicole St-Louis, Anthony F. J. Moffat +3
Wolf-Rayet stars have strong, hot winds, with mass-loss rates at least a factor of ten greater than their O-star progenitors, although their terminal wind speeds are similar. In th…
PolStar -- An Explorer-Class FUV Spectropolarimetry Mission to Map the Environments of Massive Stars
Paul Scowen, Richard Ignace, Coralie Neiner +26
PolStar is an Explorer-class far ultraviolet (FUV) spectropolarimetry mission designed to target massive stars and their environments. PolStar will take advantage of resonance line…
Spectropolarimetry of the WR + O Binary WR42
Andrew G. Fullard, Jennifer L. Hoffman, Sophia DeKlotz +3
We present new spectropolarimetric data for WR 42 collected over 6 months at the 11-m Southern African Large Telescope (SALT) using the Robert Stobie Spectrograph.
SN2012ab: A Peculiar Type IIn Supernova with Aspherical Circumstellar Material
Christopher Bilinski, Nathan Smith, G. Grant Williams +18
We present photometry, spectra, and spectropolarimetry of supernova (SN) 2012ab, mostly obtained over the course of days after discovery. SN 2012ab was a Type IIn (SN II…
Polarization simulations of stellar wind bow shock nebulae. I. The case of electron scattering
Manisha Shrestha, Hilding R. Neilson, Jennifer L. Hoffman +1
Bow shocks and related density enhancements produced by the winds of massive stars moving through the interstellar medium provide important information regarding the motions of the…
The Complex Circumstellar and Circumbinary Environment of V356 Sgr
Jamie R. Lomax, Andrew G. Fullard, Michael A. Malatesta +13
We analyze 45 spectropolarimetric observations of the eclipsing, interacting binary star V356 Sgr, obtained over a period of 21 years, to characterize the geometry of the system's…
Structure and fate of binary WR stars: Clues from spectropolarimetry
Jennifer L. Hoffman, Jamie R. Lomax
Because most massive stars have been or will be affected by a companion during the course of their evolution, we cannot afford to neglect binaries when discussing the progenitors o…
Spectropolarimetry of SN 2011dh in M51: geometric insights on a Type IIb supernova progenitor and explosion
Jon C. Mauerhan, G. Grant Williams, Douglas C. Leonard +11
We present seven epochs of spectropolarimetry of the Type IIb supernova (SN) 2011dh in M51, spanning 86 days of its evolution. The first epoch was obtained 9 days after the explosi…
A Coordinated X-ray and Optical Campaign of the Nearest Massive Eclipsing Binary, delta Orionis Aa: III. Analysis of Optical Photometric MOST and Spectroscopic (Ground Based) Variations
Herbert Pablo, Noel D. Richardson, Anthony F. J. Moffat +44
We report on both high-precision photometry from the MOST space telescope and ground-based spectroscopy of the triple system delta Ori A consisting of a binary O9.5II+early-B (Aa1…
V444 Cyg X-ray and polarimetric variability: Radiative and Coriolis forces shape the wind collision region
Jamie R. Lomax, Yael Naze, Jennifer L. Hoffman +8
We present results from a study of the eclipsing, colliding-wind binary V444 Cyg that uses a combination of X-ray and optical spectropolarimetric methods to describe the 3-D nature…
Multi-epoch spectropolarimetry of SN 2009ip: direct evidence for aspherical circumstellar material
Jon C. Mauerhan, G. Grant Williams, Nathan Smith +8
We present spectropolarimetry of SN 2009ip throughout the evolution of its 2012 explosion. During the initial 2012a phase, when the source spectrum exhibits broad P-Cygni lines, we…
Geometrical Constraints on the Hot Spot in Beta Lyrae
Jamie R. Lomax, Jennifer L. Hoffman, Nicholas M. Elias +2
We present results from six years of recalibrated and new spectropolarimetric data taken with the University of Wisconsin's Half-Wave Spectropolarimeter (HPOL) and six years of new…
Spectropolarimetry of Beta Lyrae: Constraining the Location of the Hot Spot and Jets
J. R. Lomax, J. L. Hoffman
Beta Lyrae is an eclipsing, semi-detached binary system whose state of active mass transfer can reveal details of the nonconservative evolution of binary stars. Roche lobe overflow…
O/IR Polarimetry for the 2010 Decade (SSE): Science at the Edge, Sharp Tools for All
Jennifer L. Hoffman, Dean C. Hines, Andy Adamson +16
Science opportunities and recommendations concerning optical/infrared polarimetry for the upcoming decade in the fields of stars and stellar evolution. Community-based White Paper…
O/IR Polarimetry for the 2010 Decade (PSF): Science at the Edge, Sharp Tools for All
Dan Clemens, B. -G. Andersson, Andy Adamson +16
Science opportunities and recommendations concerning optical/infrared polarimetry for the upcoming decade in the fields of planetary systems and star formation. Community-based Whi…