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Fig. 7


SN II Hubble diagrams using the distances determined via EPM (left panel) and SCM (right panel). EPM Hubble diagram (left): the distances derived for our sample (circles) use the dilution factors from Dessart & Hillier (2005). The different colours denote the absorption line that was used to estimate the photospheric velocities (Fe ii λ5169 – red; Hβ – blue). We also included EPM measurements from Eastman et al. (1996, E96), Jones et al. (2009, J09) and Bose & Kumar (2014, B14). The solid line corresponds to a ΛCDM cosmology with H0 = 70 km s−1 Mpc−1, Ωm = 0.3 and ΩΛ= 0.7, and the dotted lines to the range covered by an uncertainty on H0 of 5 km s−1 Mpc−1. SCM Hubble diagram (right): circle markers depict the SCM distances derived for our sample using the explosion epochs previously derived via EPM and the dilution factors from Dessart & Hillier (2005). The star shaped markers depict SNe for which an independent estimate of the explosion time was available via photometry. The colours are coded in the same way as for the EPM Hubble diagram. Similarly, the solid and dotted lines portray the same relation between redshift and distance modulus as in the left panel. We also included SCM distances from Poznanski et al. (2009, P09), Olivares et al. (2010, O10) and D’Andrea et al. (2010, A10). We separated the objects “culled” by Poznanski et al. (2009) from the rest of the sample by using a different symbol. The three Type II-L SNe LSQ13cuw, PS1-14vk and PS1-13bmf are identified in both the EPM and the SCM Hubble diagram.

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