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Number 3 May 1993
On the cover J.P. Hughes and K.P. Singh (1992, BAAS, 23, 918) have investigated the supernova remnant G292.0+1.8 (= MSH11-54) using Einstein IPC and SSS and EXOSAT ME data, extracted from the HEASARC. They fit a nonequilibrium ionization (NEI) model and derive elemental abundances which agree to an unprecedented level with predictions from a 25 solar mass progenitor (Thielemann, F. K., Nomoto, K., Shigeyama, T., Tsujimoto, T., & Hashimoto, M. 1991, in Elements and the Cosmos, ed. R. Terlevich [Cambridge Univ. Press], in press.) In fact the difference between the derived abundances and the model ones for O, Ne, Mg, SI, S, and Ar agree to 4% (for the RMS fractional difference) and no single element varies from the model by more than 15%.
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HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.
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