Roger A. Chevalier
University of Virginia
288 Papers
3K Citations
Roger A. Chevalier is an academic researcher from University of Virginia. The author has contributed to research in topics: Supernova & Supernova remnant. The author has an hindex of 87, co-authored 284 publications. Previous affiliations of Roger A. Chevalier include Kitt Peak National Observatory & Advanced Technology Center.
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Papers
Near-infrared Spectroscopy of the Type IIn SN 2010jl: Evidence for High Velocity Ejecta
H. Jacob Borish,Chenliang Huang,Roger A. Chevalier,Benjamin M. Breslauer,Benjamin M. Breslauer,Aaron M. Kingery,Aaron M. Kingery,George C. Privon,George C. Privon +8 more
TL;DR: In this paper, the authors present 1-2.4 μm spectroscopy over the age range of 36-565 days from the earliest detection of the supernova SN 2010jl.
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Hubble Space Telescope WFPC2 Imaging of SN 1979C and Its Environment
Schuyler D. Van Dyk,Chien Y. Peng,Aaron J. Barth,Alexei V. Filippenko,Roger A. Chevalier,Robert A. Fesen,Claes Fransson,Robert P. Kirshner,Bruno Leibundgut +8 more
TL;DR: In this article, the authors examined the environment of the Type II-L supernova SN 1979C in NGC 4321 (M100) and placed rigorous constraints on the mass of the SN progenitor, based on photometry of the stellar populations in its environment.
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New HST Observations of High Velocity Lyman Alpha and Balmer Alpha in SNR 1987A
Eli Michael,Richard McCray,C. S. J. Pun,Kazimierz J. Borkowski,Peter M. Garnavich,Peter Challis,Robert P. Kirshner,Roger A. Chevalier,Alexei Fillippenko,Cleas Fransson,Nino Panagia,Mark M. Phillips,Brian P. Schmidt,Nicholas B. Suntzeff,J. Craig Wheeler +14 more
TL;DR: In this article, the authors describe and model high velocity Lyman alpha and Balmer alpha emission from supernova remnant 1987A seen in September and October 1997 with the Space Telescope Imaging Spectrograph.
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HST-COS Observations of Hydrogen, Helium, Carbon and Nitrogen Emission from the SN 1987A Reverse Shock
Richard McCray,Steven V. Penton,Robert P. Kirshner,Peter Challis,J. Martin Laming,Patrice Bouchet,Roger A. Chevalier,Claes Fransson,Peter M. Garnavich,Kevin Heng,Josefin Larsson,Stephen S. Lawrence,Peter Lundqvist,Nino Panagia,Chun S. J. Pun,Nathan Smith,Jesper Sollerman,George Sonneborn,Ben Sugerman,J. Craig Wheeler +19 more
TL;DR: In this article, the most sensitive ultraviolet observations of Supernova 1987A to date were presented, showing that the N/C abundance ratio in the gas crossing the reverse shock is significantly higher than that in the circumstellar ring, a result attributed to chemical stratification in the outer envelope of the supernova progenitor.
Recent X-Ray Observations of SN1986J with ASCA and ROSAT
TL;DR: In this paper, the authors present ASCA and ROSAT observations of SN 1986J covering the period 1991 August to 1996 January, and find that the 0.5-2.5 keV flux decreased proportional to $t^{-2}$ during this period.
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