2009A&A...506..829U


Query : 2009A&A...506..829U

2009A&A...506..829U - Astronomy and Astrophysics, volume 506, 829-834 (2009/11-1)

High mass of the type IIP supernova 2004et inferred from hydrodynamic modeling.

UTROBIN V.P. and CHUGAI N.N.

Abstract (from CDS):

Previous studies of type IIP supernovae have inferred that progenitor masses recovered from hydrodynamic models are higher than 15M. To verify the progenitor mass of this supernova category, we attempt a parameter determination of the well-observed luminous type IIP supernova 2004et. We model the bolometric light curve and the photospheric velocities of SN 2004et by means of hydrodynamic simulations in an extended parameter space. From hydrodynamic simulations and observational data, we infer a presupernova radius of 1500±140R, an ejecta mass of 24.5±1M, an explosion energy of (2.3±0.3)x1051erg, and a radioactive 56Ni mass of 0.068±0.009M. The estimated progenitor mass on the main sequence is in the range of 25-29M. In addition, we find clear signatures of the explosion asymmetry in the nebular spectra of SN 2004et. The measured progenitor mass of SN 2004et is significantly higher than the progenitor mass suggested by the pre-explosion images. We speculate that the mass inferred from hydrodynamic modeling is overestimated and crucial missing factors are multi-dimensional effects.

Abstract Copyright:

Journal keyword(s): stars: supernovae: individual: SN 2004et - stars: supernovae: general

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 614 1
2 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4634 2
3 2MASS J07371703+6535579 HXB 07 37 17.0439241104 +65 35 57.815731387           SNIIP 248 1
4 SN 2003Z SN* 09 07 32.46 +60 29 17.5     16.7     SNIIP 67 1
5 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 357 1
6 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2335 2
7 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 439 1

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2021.11.28-06:48:54

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