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Title:
High-velocity emission in young supernova remnants: SN 1006 and SN 1572
Authors:
Kirshner, Robert; Winkler, P. Frank; Chevalier, Roger A.
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AB(Middlebury College, VT; Cambridge University, England), AC(Virginia, University, Charlottesville)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 315, April 15, 1987, p. L135-L139. (ApJL Homepage)
Publication Date:
04/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
BALMER SERIES, H ALPHA LINE, SHOCK WAVES, SPECTRAL RESOLUTION, STELLAR CORONAS, SUPERNOVAE, HYDROGEN ATOMS, KINEMATICS, PHYSICAL PROPERTIES
DOI:
10.1086/184875
Bibliographic Code:
1987ApJ...315L.135K

Abstract

The authors have detected broad Hα emission from the SN 1006 remnant with a FWHM velocity of 2600±100 km s-1. This emission is similar to that seen in the remnant of SN 1572 (Tycho's SNR), which has a FWHM for Hα of 1800 km s-1. In both cases, the ratio of broad to narrow Hα line emission and the measured width of the broad line are in reasonable accord with the nonradiative shock model. Using the nonradiative model to interpret the line widths, the authors compare the derived shock velocity with proper motion measurements to derive distances of 1.4 - 2.1 kpc to SN 1006 and 2.0 - 2.8 kpc to SN 1572.

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