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[vsnet-alert 6553] SN 2001ed, prediscovery observations
- Date: Wed, 5 Sep 2001 12:33:27 +0900 (JST)
- To: vsnet-alert@kusastro.kyoto-u.ac.jp, vsnet-campaign-sn@kusastro.kyoto-u.ac.jp, isnchat@yahoogroups.com, astro-l@uwwvax.uww.edu
- From: Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>
- Subject: [vsnet-alert 6553] SN 2001ed, prediscovery observations
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
Dear SN watchers,
IAUC 7704 informed the prediscovery magnitudes of SN 2001ed as
follows:
2001 Aug. 21 V=14.7 Southern All-Sky SN Survey at Mt. Stromlo
2001 Aug. 22.13 14.5: P. Antonini, unfiltered CCD
2001 Aug. 29.13 15.0: P. Antonini, unfiltered CCD
(2001 Sept. 2.96 14.9: CROSS, unfiltered CCD, discovery)
From those photometry, SN 2001ed is probably not an SN Ia well
before maximum phase. It can be a type II SN in its plateau phase, or
other type SN some days (or a week) after maximum. In either case, it
is quite overluminous if its distance is consistent with the recession
velocity of the host galaxy. Further observations are strongly urged.
Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp
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