Electronic Telegram No. 566
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2006dl AND 2006dk
     D. C. Leonard, San Diego State University, reports that CCD spectra
(range 360-920 nm) of SN 2006dl (cf. IAUC 8727), obtained on July 1 UT
with the Keck I 10-m telescope (+ LRISp), shows it to be an apparently
young type-IIb/Ib supernova.  The spectra present features that bear
similarity to those of SN 2000H (cf. Elmhamdi et al. 2006, A.Ap., 450,
305), SN 2006bf (cf. CBET 455), and SN 2006T (cf. CBET 425) within two
weeks of explosion.
     Similarly obtained spectra of SN 2006dk (cf. IAUC 8727) show it to
be an aging type-Ib supernova, with features very similar to those of SN
1984L about 10 weeks after B-band maximum (cf. Filippenko 1997, ARAA 35,
309, but *FOR* day 58, *READ* day 72; Matheson et al. 2001, A.J. 121,
1648) over the spectral range available for comparison (350-670 nm).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 July 1                      (CBET 566)               Daniel W. E. Green