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This article has an erratum: [https://doi.org/10.1051/0004-6361/201117440e]


Table 1

Integrated emission line fluxes of the ejecta as measured in the X-Shooter dereddened spectra and, within brackets, the fluxes measured on the spectra before correction for reddening.

Line ID & λ (Å) Flux (× 10-15 erg cm-2 s-1 Å-1)
March 15 April 11 May 12

 [Nev] (1) 3343 42.5 (20.8) 21.2 (10.3) 5.8 (2.8)
 [Nev] (1) 3426 119.0 (60.2) 56.0 (27.9) 15.4 (7.5)
 [Neiii] (1) 3869 41.2 (18.7) 12.4 (6.1)
 [Neiii] (1) 3967 13.8 (5.7) 3.7 (1.8)
Hδ 12.0 (5.6) 2.7 (1.1)
 [Oiii] (2) 4363 60.2 (33.2) 19.4 (11.4) 2.6 (1.4)
 [Oiii] (1) 5007+4956 151.0 (84.0) 81.4 (49.3) 22.8 (14.1)
 [Oiii] (1) 5007†† 102.0 (63.0) 59.8 (37.0) 16.9 (10.5)
Hβ 4861 17.0 (11.3) 3.5 (2.5) 0.6 (0.4)
 [Nii] (3) 5755 18.2 (12.2) 9.8 (6.7) 2.0 (1.6)
Hα+ [Nii] (1) 58.3 (41.9) 22.2 (15.8) 12.0 (8.7)

 [Ne/O] ††† 1.97 1.69

Notes. 

(†)

Flux errors are in the range 1–30%, depending on the line strength.

(††)

The [Oiii]λ5007 flux has been computed assuming the theoretical transition probability of 3 after subtraction of the Hβ contribution.

(†††)

The lower and upper limit in the [Ne/O] abundances have been computed measuring the spectra corrected for reddening assuming E(B − V) = 0.25 mag and the uncorrected spectra, respectively, also adding the appropriate uncertainty on the measured line flux.

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