Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272...84b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 272, Sept. 1, 1983, p. 84-91.
Astronomy and Astrophysics
Astrophysics
67
Abundance, Optical Emission Spectroscopy, Supernova Remnants, Visible Spectrum, X Ray Sources, Astronomical Models, Emission Spectra, Interstellar Chemistry, Line Spectra, Stellar Mass Ejection
Scientific paper
X-ray observations with the Einstein Observatory show that the supernova remnant (SNR) in the galaxy NGC 4449 is the most luminous known X-ray SNR - a distinction it already holds at optical and radio wavelengths. New optical spectroscopy and the X-ray data indicate that the extraordinary luminosity is due to chemically enriched material at unusually high densities. A model in which the remnant resulted from the explosion of a massive star in a medium of density near 25 cm-3 about 100 years ago is consistent with all of the data. In this picture the X-rays stem from chemically enriched supernova ejecta heated by a reverse shock.
Blair William Patrick
Kirshner Robert P.
Winkler Frank Jr. P.
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