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
Abundance gradients in M31: Comparison of results from supernova remnants and H II regions
TL;DR: In this article, the authors obtained spectra of 11 H II regions and additional spectra for six previously reported supernova remnants (SNRs) in M31, and compared the SNR and H II region abundance gradients.
An Intermediate Luminosity Transient in NGC 300: The Eruption of a Dust-Enshrouded Massive Star
Edo Berger,Alicia M. Soderberg,Roger A. Chevalier,Claes Fransson,Ryan J. Foley,Douglas C. Leonard,John H. Debes,Aleksandar M. Diamond-Stanic,Andrea K. Dupree,Inese I. Ivans,Jennifer Simmerer,Ian B. Thompson,Christy A. Tremonti +12 more
TL;DR: In this paper, high-resolution optical spectroscopy, UV/radio/X-ray imaging, and archival Hubble and Spitzer observations of an intermediate luminosity optical transient recently discovered in the nearby galaxy NGC 300.
Shock breakout in dense mass loss: luminous supernovae
TL;DR: In this paper, the authors examined the case where a circumstellar medium around a supernova is sufficiently opaque that a radiation-dominated shock propagates in the circumstellar region and showed that the eventual escape of this energy gives the maximum luminosity of the supernova.
RADIO AND X-RAY OBSERVATIONS OF THE TYPE Ic SN 2007gr REVEAL AN ORDINARY, NON-RELATIVISTIC EXPLOSION
TL;DR: In this paper, the authors present extensive radio and X-ray observations of the nearby Type Ic SN 2007gr in NGC 1058 obtained with the Very Large Array (VLA) and the Chandra Xray Observatory and spanning 5 to 150 days after explosion.
Supernovae and their Evolution in a Low Metallicity ISM
Roger A. Chevalier
- 01 Jun 2008
TL;DR: However, there are indications that mass loss rates for high mass early type stars may be overestimated and that there are mass loss mechanisms that do not decline at lower metallicity as discussed by the authors.