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Date: Fri, 2 Apr 93 14:43:07 +0900
From: Hitoshi Yamaoka <yamaoka@apsun1.astron.s.u-tokyo.ac.jp>
Subject: SN 1993J = II-L?
>From nomoto Fri Apr 2 14:34:17 1993
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Date: Fri, 2 Apr 93 14:34:07 +0900
From: nomoto
Message-ID: <vsnet-history578@hoge.baba.hajime.jp>
To: nomoto, shige, kumagai, yamaoka, tsuji, suzuki, wanajoh, iwamoto, ishimaru
Subject: II-L?
Status: R
Following information suggests that 93J could be type II-L (Linear
decline), though being dimmer than 79C. If II-L, the presence of
dense circumstellar materials is plausible and thus intense X-ray
emissions (like 80K) can be expected.
K. Nomoto 2 April 93
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>From fkt@cfa159.local Fri Apr 2 07:22:24 1993
Friedel Thielemann (CfA):
the latest I heard is that the supernova dimmed by 0.3mag from the day
before yesterday to yesterday and by more than 1 mag, during the next
24 hours, i.e. it is a fast declining lightcurve.
David Jeffery showed me IUE spectra of 93J and 79C which look similar.
Very close to black body (also at small wavelengths - opposite to 87A)
and some narrow P-Cygni lines.
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