2009CBET.1849....1S


Query : 2009CBET.1849....1S

2009CBET.1849....1S - Central Bureau Electronic Telegrams, 1849, 1 (2009/June-0)

Supernovae 2009fw and 2009gc.

SILVERMAN J.M., POZNANSKI D., FILIPPENKO A.V., CHORNOCK R. and ARCAVI I.

Abstract (from CDS):

J. M. Silverman, D. Poznanski, A. V. Filippenko, and R. Chornock, University of California, Berkeley; and I. Arcavi, Weizman Instiute of Science, report that inspection of a CCD spectrum (range 340-1000 nm), obtained on June 17 UT with LRIS on the Keck I 10-m telescope, shows that 2009fw (CBET 1836) is a normal type-Ia supernova. After removing the host-galaxy recession velocity (8462 km/s; Da Costa, et al. 1991, Southern Sky Reshift Survey: The Catalogue), the absorption minimum of the Si II 635.5-nm feature is found to be blueshifted by about 11800 km/s. Cross-correlation with a library of supernova spectra using the "SuperNova IDentification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2009fw is about one week past maximum light. A noisy spectrum of 2009gc (CBET 1841) shows that it is probably a type-II supernova. The strong emission feature identified as H-alpha greatly dominates over the corresponding absorption component.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 SN 2009gc SN* 11 03 16.04 -16 46 09.7           SNII: 4 1
2 SN 2009fw SN* 20 32 18.50 -19 43 59.6           SNIa-norm 7 1

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