4.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Goddard Space Flight CenterUS209 papers
- University of Maryland, College ParkUS195 papers
- Centre National de la Recherche ScientifiqueFR189 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT187 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT186 papers
- University of PaduaIT180 papers
- Stanford UniversityUS178 papers
- AlbaNovaSE175 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS173 papers
- University of TriesteIT173 papers
- Istituto Nazionale di Fisica Nucleare, Roma Tor VergataIT172 papers
- Hiroshima UniversityJP171 papers
60 papers · 1 filter
Colliding winds in WR21 and WR31 -- I. The X-ray view
Yael Naze, Gregor Rauw, Rachel Johnson +2
WR21 and WR31 are two WR+O binaries with short periods, quite similar to the case of V444 Cyg. The XMM-Newton observatory has monitored these two objects and clearly revealed phase…
The porous envelope and circumstellar wind matter of the closest carbon star, CW Leonis
Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5
Recent abrupt changes of CW Leonis may indicate that we are witnessing the moment that the central carbon star is evolving off the Asymptotic Giant Branch (AGB) and entering into t…
A revised comparison of distant and nearby solar twins
Charles R. Cowley, Robert E. Stencel
Properties of solar twins reported by Lehmann et al. (2023) at kiloparsec distances from the local standard of rest (LSR) are compared to solar twins within 100 pc of the Sun. Thes…
On the N/O abundance ratio and the progenitor mass for the most luminous planetary nebulae of M 31
Toshiya Ueta, Masaaki Otsuka
Plasma diagnostics are the bases of investigation into the physical and chemical properties of line-emitting gaseous systems. To perform plasma diagnostics properly, it is essentia…
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: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…
Multi-epoch Optical Images of IRC+10216 Tell About the Central Star And the Adjacent Environment
Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5
Six images of IRC+10216 taken by the Hubble Space Telescope at three epochs in 2001, 2011, and 2016 are compared in the rest frame of the central carbon star. An accurate astrometr…
The First Dynamical Mass Determination of a Nitrogen-rich Wolf-Rayet Star using a Combined Visual and Spectroscopic Orbit
Noel D. Richardson, Laura Lee, Gail Schaefer +11
We present the first visual orbit for the nitrogen-rich Wolf-Rayet binary, WR 133 (WN5o + O9I) based on observations made with the CHARA Array and the MIRC-X combiner. This orbit r…
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…
Long-Term Near-Infrared Brightening of Non-Variable OH/IR Stars
Takafumi Kamizuka, Yoshikazu Nakada, Kenshi Yanagisawa +8
Non-variable OH/IR stars are thought to have just left the asymptotic giant branch (AGB) phase. In this conventional picture, they must still show strong circumstellar extinction 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…
AKARI Mission Program: Excavating Mass Loss History in Extended Dust Shells of Evolved Stars (MLHES) I. Far-IR Photometry
Toshiya Ueta, Andrew J. Torres, Hideyuki Izumiura +3
We performed a far-IR imaging survey of the circumstellar dust shells of 144 evolved stars as a mission programme of the AKARI infrared astronomical satellite using the Far-Infrare…
Morpho-Kinematics of the Circumstellar Environments around Post-AGB Stars
Toshiya Ueta, Hideyuki Izumiura, Issei Yamamura +1
We observed two proto-planetary nebulae, HD 56126 representing a source with an elliptical circumstellar shell and IRAS 16594-4656 representing a source with a bipolar circumstella…
MESA Models of the Evolutionary State of the Interacting Binary epsilon Aurigae
Justus Gibson, Robert Stencel
Using MESA code (Modules for Experiments in Stellar Astrophysics, version 9575), an evaluation was made of the evolutionary state of the epsilon Aurigae binary system (HD 31964, F0…
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 Herschel Planetary Nebula Survey (HerPlaNS) - a comprehensive dusty photoionization model of NGC6781
Masaaki Otsuka, Toshiya Ueta, Peter A. M. van Hoof +9
We perform a comprehensive analysis of the planetary nebula (PN) NGC6781 to investigate the physical conditions of each of its ionized, atomic, and molecular gas and dust component…
Structure in the Disk of epsilon Aurigae: Analysis of the ARCES and TripleSpec data obtained during the 2010 eclipse
Justus L. Gibson, Robert E. Stencel, William Ketzeback +4
Context: Worldwide interest in the recent eclipse of epsilon Aurigae resulted in the generation of several extensive data sets, including those related to high resolution spectrosc…
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…