SIMBAD references

2015MNRAS.454...95M - Mon. Not. R. Astron. Soc., 454, 95-114 (2015/November-3)

SN 2011fu: a Type IIb supernova with a luminous double-peaked light curve.

MORALES-GAROFFOLO A., ELIAS-ROSA N., BERSTEN M., JERKSTRAND A., TAUBENBERGER S., BENETTI S., CAPPELLARO E., KOTAK R., PASTORELLO A., BUFANO F., DOMINGUEZ R.M., ERGON M., FRASER M., GAO X., GARCIA E., HOWELL D.A., ISERN J., SMARTT S.J., TOMASELLA L. and VALENTI S.

Abstract (from CDS):

We present optical and near-infrared observations of the type IIb supernova (SN) 2011fu from a few days to ∼ 300 d after explosion. The SN presents a double-peaked light curve (LC) similar to that of SN 1993J, although more luminous and with a longer cooling phase after the primary peak. The spectral evolution is also similar to SN 1993J's, with hydrogen dominating the spectra to ∼ 40 d, then helium gaining strength, and nebular emission lines appearing from ∼ 60 d post-explosion. The velocities derived from the P-Cygni absorptions are overall similar to those of other type IIb SNe. We have found a strong similarity between the oxygen and magnesium line profiles at late times, which suggests that these lines are forming at the same location within the ejecta. The hydrodynamical modelling of the pseudo-bolometric LC and the observed photospheric velocities suggest that SN 2011fu was the explosion of an extended star (R ∼ 450 R), in which 1.3x1051 erg of kinetic energy were released and 0.15 M of 56Ni were synthesized. In addition, a better reproduction of the observed early pseudo-bolometric LC is achieved if a more massive H-rich envelope than for other type IIb SNe is considered (0.3 M). The hydrodynamical modelling of the LC and the comparison of our late-time spectra with nebular spectral models for type IIb SNe, point to a progenitor for SN 2011fu with a Zero Age Main Sequence (ZAMS) mass of 13-18 M.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): supernovae: general - supernovae: individual: SN 2011fu

VizieR on-line data: <Available at CDS (J/MNRAS/454/95): tablea1.dat tablea2.dat tableb1.dat tableb2.dat tableb3.dat tableb4.dat tableb5.dat>

Simbad objects: 16

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2019.12.12-17:32:28

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