[IAUC] CBET 2613: 20110101 : SUPERNOVAE 2010ll, 2010lp, AND 2010lq

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                                                  Electronic Telegram No. 2613
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau en eps.harvard.edu (alternate cbat en iau.org)
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SUPERNOVAE 2010ll, 2010lp, AND 2010lq
     J. L. Prieto, Carnegie Observatories; and N. Morrell, Las Campanas
Observatory, report that they obtained optical spectra (range 380-920 nm;
resolution 0.8nm) of 2010ll (cf. CBET 2602) and SN 2010lp (cf. CBET 2612),
as well as the possible supernova reported on CBET 2611, on Dec. 30-31 UT with
the du Pont 2.5-m telescope (+ WFCCD) at Las Campanas Observatory.  The SNID
cross-correlation software (Blondin and Tonry 2007, Ap.J. 666, 1024) was used
to aid identification and age/redshift estimation.  SN 2010ll is a normal
type-Ia supernova at approximately 20 days after maximum; the redshift
obtained with SNID from the supernova features is 0.066 +/- 0.003.
     The spectrum of 2010lp shows features resembling peculiar 2005hk-like
type-Ia supernovae, shortly after maximum light. In particular, the authors
find a relatively good match with the spectrum of SN 2007on at 2-4 days after
maximum.  After correcting for the recession velocity of the host galaxy,
NGC 1137 (3042 km/s from the RC3 galaxy catalogue), they measure a blueshift
from the Si II (rest 635.5 nm) profile of 11600 km/s.
     The object reported on CBET 2611 is a young, normal type-Ia supernova,
and thus designated here as SN 2010lq.  The best-fitted SNID template is
that of SN 2000E at -6 days.  After correcting for the recession velocity of
the host galaxy, ESO 495-16 (7924 km/s; Yamada et al. 1994, MNRAS, 270, 93),
the authors measure a blueshift for the Si II (rest 635.5 nm) profile of
10200 km/s.


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                         (C) Copyright 2011 CBAT
2011 January 1                   (CBET 2613)              Daniel W. E. Green