Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266..287s&link_type=abstract
Astrophysical Journal, Part 1, vol. 266, Mar. 1, 1983, p. 287-297.
Astronomy and Astrophysics
Astrophysics
77
Astronomical Maps, Interstellar Matter, Nebulae, Stellar Mass, Supernova Remnants, X Ray Sources, Astronomical Models, Ejecta, Heao 2, High Resolution, Mass Distribution, Shock Waves, X Ray Imagery
Scientific paper
High resolution Einstein Observatory X ray images of Tycho's supernova remnant (SNR) are discussed. The object has features of a shock heated shell in the interstellar medium, accompanied by an inner shell with clumped ejecta. The measurements were made for 22 hr on Feb. 8, 1979, revealing a circular SNR, a thin emission shelf at the outer edge of the remnant, no emission in the central object, and most emissions concentrated in small, clumpy objects within a spherical shell. Three components of the X ray emission were identified, and calculations of the swept-up mass, the diffuse component of the ejecta shell, and the clumpy ejecta are reported to be 2.2, 1.2, and 0.7 solar mass, respectively. The SNR is concluded to be at an evolutionary stage between uniform expansion and adiabatic changes.
Gorenstein Paul
Seward Frederick
Tucker Warwick
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