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Date: Wed, 18 Aug 93 11:15:35 CDT From: wheel@astro.as.utexas.edu (Craig Wheeler) Subject: for circular on SN 1993J Here is the text describing recent observations of SN 1993J that we submit for inclusion in a circular. Craig ________________________________________________________________________ A. Clocchiatti, J. C. Wheeler and D. A. Swartz report that a fully reduced spectrum (range 450-760 nm, dispersion 0.4 nm/pixel) of SN 1993J obtained on UT August 14.16 at the 2.1m telescope of McDonald Observatory, shows that Halpha and Hbeta are still present in blueshifted absorption (8650 and 8800 km/sec, respectively) superimposed on a very blue continuum. HeI 6678 has disappeared and Halpha emission nearly so. [OI] 557.7 nm (centroid blueshifted by 1700 km/sec) and [OI] 630.0/636.5 nm (centroid blueshifted by 500 km/sec, with a weaker, narrow component blueshifted by 2100 km/sec) show fine structure in their profiles, confirming a private communication from Z. Li and L. Wang of Beijing Normal University.
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