2002A&A...386..944S


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.19CET17:01:34

2002A&A...386..944S - Astronomy and Astrophysics, volume 386, 944-956 (2002/5-2)

Supernova 1998bw - the final phases.

SOLLERMAN J., HOLLAND S.T., CHALLIS P., FRANSSON C., GARNAVICH P., KIRSHNER R.P., KOZMA C., LEIBUNDGUT B., LUNDQVIST P., PATAT F., FILIPPENKO A.V., PANAGIA N. and WHEELER J.C.

Abstract (from CDS):

The probable association with GRB 980425 immediately put SN 1998bw at the forefront of supernova research. Here, we present revised late-time BVRI light curves of the supernova, based on template images taken at the VLT@. To follow the supernova to the very last observable phases we have used HST/STIS@. Deep images taken in June and November 2000 are compared to images taken in August 2001. The identification of the supernova is firmly established. This allows us to measure the light curve to ∼1000 days past explosion. The main features are a rapid decline up to more than 500 days after explosion, with no sign of complete positron trapping from the 56Co decay. Thereafter, the light curve flattens out significantly. One possible explanation is powering by more long lived radioactive isotopes, if they are abundantly formed in this energetic supernova.

Abstract Copyright:

Journal keyword(s): supernovae: individual (SN 1998bw) - nuclear reactions, nucleosynthesis, abundances - Gamma rays: bursts

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4548 2
2 SN 1998bu SN* 10 46 46.01 +11 50 07.5   12.11       SNIa 296 1
3 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1671 2
4 ESO 184-82 G 19 35 04.416 -52 50 38.04   15.17   14.26   ~ 100 2

    Equat.    Gal    SGal    Ecl

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2021.01.19-17:01:34

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