Electronic Telegram No. 2355
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@iau.org; cbatiau@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010ey IN ESO 548-76
     N. Morrell, Las Campanas Observatory, Carnegie Supernova Project; J.
Prieto, Carnegie Observatories; and I. Botti, Universidad de Chile, write
that on July 7.4 UT they obtained an optical spectrum (range 387-920 nm) of
2010ey (cf. CBET 2349) at Las Campanas Observatory, using the 2.5-m du Pont
telescope (+ WFCCD), which reveals that 2010ey is an evolved type-Ia supernova.
Assuming for the host galaxy the NED recession velocity of 1488 km/s (Wegner
et al. 2003, A.J. 126, 2268), cross-correlation with a library of supernova
spectra via the Supernova Identification tool (Blondin and Tonry 2007, Ap.J.
666, 1024) shows that 2010ey is a normal type-Ia supernova several months
after maximum brightness, best matching the spectrum of SN 2003du at 139 days
after maximum light.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 July 8                      (CBET 2355)              Daniel W. E. Green