Table 2.

Comparison of correlation strengths between colours and absolute magnitudes.

CorrelationsAll sampleSample cutSample cutSample cut
based on coloursbased on Na i Dbased on Na i D + position
NSNerpNSNerpNSNerpNSNerp
(B − V)15 versus Mmax310.35 ± 0.160.31280.50 ± 0.103.5 × 10−2220.49 ± 0.107.3 × 10−2120.49 ± 0.220.40
(B − V)15 versus Mend300.33 ± 0.180.43270.44 ± 0.140.13210.49 ± 0.097.2 × 10−2120.59 ± 0.180.19
(B − V)30 versus Mmax560.30 ± 0.160.30500.47 ± 0.031.4 × 10−3360.39 ± 0.140.14180.30 ± 0.270.92
(B − V)30 versus Mend550.32 ± 0.170.27490.40 ± 0.136.1 × 10−2350.35 ± 0.190.36180.24 ± 0.290.83
(B − V)50 versus Mend500.39 ± 0.082.8 × 10−2450.33 ± 0.160.26300.34 ± 0.210.49150.42 ± 0.260.57
(B − V)70 versus Mend370.37 ± 0.170.23330.23 ± 0.290.74240.10 ± 0.300.35110.34 ± 0.310.92
(u − g)30 versus Mmax350.51 ± 0.122.0 × 10−3310.56 ± 0.032.1 × 10−3260.54 ± 0.061.3 × 10−2120.39 ± 0.220.59
(u − g)30 versus Mend340.36 ± 0.220.43310.41 ± 0.240.36250.49 ± 0.126.9 × 10−2120.25 ± 0.310.86
(g − r)15 versus Mmax330.53 ± 0.111.5 × 10−3300.57 ± 0.032.1 × 10−3230.69 ± 0.013.6 × 10−4120.52 ± 0.190.29
(g − r)15 versus Mend320.58 ± 0.116.6 × 10−3290.46 ± 0.149.0 × 10−2220.77 ± 0.025.8 × 10−5120.43 ± 0.270.62
(g − r)30 versus Mmax570.38 ± 0.170.11510.34 ± 0.110.10370.47 ± 0.166.2 × 10−2180.18 ± 0.280.69
(g − r)30 versus Mend560.49 ± 0.125.0 × 10−3500.36 ± 0.160.16360.55 ± 0.182.6 × 10−2180.08 ± 0.270.44
(g − Y)15 versus Mend130.66 ± 0.146.8 × 10−3120.73 ± 0.093.1 × 10−280.59 ± 0.210.355⋅⋅⋅ ± ⋅⋅⋅⋅⋅⋅
(g − Y)30 versus Mend390.41 ± 0.116.3 × 10−3350.54 ± 0.021.4 × 10−3250.27 ± 0.260.96140.25 ± 0.300.88
(g − Y)50 versus Mend380.48 ± 0.133.1 × 10−2340.30 ± 0.230.69230.21 ± 0.290.72110.06 ± 0.300.47
CorrelationsAll sampleSample cutSample cutSample cut
based on coloursbased on Na i Dbased on Na i D + position
NSNerpNSNerpNSNerpNSNerp
(B − V)15 versus Mmax310.35 ± 0.160.31280.50 ± 0.103.5 × 10−2220.49 ± 0.107.3 × 10−2120.49 ± 0.220.40
(B − V)15 versus Mend300.33 ± 0.180.43270.44 ± 0.140.13210.49 ± 0.097.2 × 10−2120.59 ± 0.180.19
(B − V)30 versus Mmax560.30 ± 0.160.30500.47 ± 0.031.4 × 10−3360.39 ± 0.140.14180.30 ± 0.270.92
(B − V)30 versus Mend550.32 ± 0.170.27490.40 ± 0.136.1 × 10−2350.35 ± 0.190.36180.24 ± 0.290.83
(B − V)50 versus Mend500.39 ± 0.082.8 × 10−2450.33 ± 0.160.26300.34 ± 0.210.49150.42 ± 0.260.57
(B − V)70 versus Mend370.37 ± 0.170.23330.23 ± 0.290.74240.10 ± 0.300.35110.34 ± 0.310.92
(u − g)30 versus Mmax350.51 ± 0.122.0 × 10−3310.56 ± 0.032.1 × 10−3260.54 ± 0.061.3 × 10−2120.39 ± 0.220.59
(u − g)30 versus Mend340.36 ± 0.220.43310.41 ± 0.240.36250.49 ± 0.126.9 × 10−2120.25 ± 0.310.86
(g − r)15 versus Mmax330.53 ± 0.111.5 × 10−3300.57 ± 0.032.1 × 10−3230.69 ± 0.013.6 × 10−4120.52 ± 0.190.29
(g − r)15 versus Mend320.58 ± 0.116.6 × 10−3290.46 ± 0.149.0 × 10−2220.77 ± 0.025.8 × 10−5120.43 ± 0.270.62
(g − r)30 versus Mmax570.38 ± 0.170.11510.34 ± 0.110.10370.47 ± 0.166.2 × 10−2180.18 ± 0.280.69
(g − r)30 versus Mend560.49 ± 0.125.0 × 10−3500.36 ± 0.160.16360.55 ± 0.182.6 × 10−2180.08 ± 0.270.44
(g − Y)15 versus Mend130.66 ± 0.146.8 × 10−3120.73 ± 0.093.1 × 10−280.59 ± 0.210.355⋅⋅⋅ ± ⋅⋅⋅⋅⋅⋅
(g − Y)30 versus Mend390.41 ± 0.116.3 × 10−3350.54 ± 0.021.4 × 10−3250.27 ± 0.260.96140.25 ± 0.300.88
(g − Y)50 versus Mend380.48 ± 0.133.1 × 10−2340.30 ± 0.230.69230.21 ± 0.290.72110.06 ± 0.300.47

Notes. Four different samples are used: total (all), removing 10 per cent of the reddest objects (based on colours), only the SNe II with an Na i D equivalent width smaller than 1 Å (based on Na i D), and only the SNe II away from the host-galaxy nuclei with no Na i D equivalent width (based on Na i D + position).

Table 2.

Comparison of correlation strengths between colours and absolute magnitudes.

CorrelationsAll sampleSample cutSample cutSample cut
based on coloursbased on Na i Dbased on Na i D + position
NSNerpNSNerpNSNerpNSNerp
(B − V)15 versus Mmax310.35 ± 0.160.31280.50 ± 0.103.5 × 10−2220.49 ± 0.107.3 × 10−2120.49 ± 0.220.40
(B − V)15 versus Mend300.33 ± 0.180.43270.44 ± 0.140.13210.49 ± 0.097.2 × 10−2120.59 ± 0.180.19
(B − V)30 versus Mmax560.30 ± 0.160.30500.47 ± 0.031.4 × 10−3360.39 ± 0.140.14180.30 ± 0.270.92
(B − V)30 versus Mend550.32 ± 0.170.27490.40 ± 0.136.1 × 10−2350.35 ± 0.190.36180.24 ± 0.290.83
(B − V)50 versus Mend500.39 ± 0.082.8 × 10−2450.33 ± 0.160.26300.34 ± 0.210.49150.42 ± 0.260.57
(B − V)70 versus Mend370.37 ± 0.170.23330.23 ± 0.290.74240.10 ± 0.300.35110.34 ± 0.310.92
(u − g)30 versus Mmax350.51 ± 0.122.0 × 10−3310.56 ± 0.032.1 × 10−3260.54 ± 0.061.3 × 10−2120.39 ± 0.220.59
(u − g)30 versus Mend340.36 ± 0.220.43310.41 ± 0.240.36250.49 ± 0.126.9 × 10−2120.25 ± 0.310.86
(g − r)15 versus Mmax330.53 ± 0.111.5 × 10−3300.57 ± 0.032.1 × 10−3230.69 ± 0.013.6 × 10−4120.52 ± 0.190.29
(g − r)15 versus Mend320.58 ± 0.116.6 × 10−3290.46 ± 0.149.0 × 10−2220.77 ± 0.025.8 × 10−5120.43 ± 0.270.62
(g − r)30 versus Mmax570.38 ± 0.170.11510.34 ± 0.110.10370.47 ± 0.166.2 × 10−2180.18 ± 0.280.69
(g − r)30 versus Mend560.49 ± 0.125.0 × 10−3500.36 ± 0.160.16360.55 ± 0.182.6 × 10−2180.08 ± 0.270.44
(g − Y)15 versus Mend130.66 ± 0.146.8 × 10−3120.73 ± 0.093.1 × 10−280.59 ± 0.210.355⋅⋅⋅ ± ⋅⋅⋅⋅⋅⋅
(g − Y)30 versus Mend390.41 ± 0.116.3 × 10−3350.54 ± 0.021.4 × 10−3250.27 ± 0.260.96140.25 ± 0.300.88
(g − Y)50 versus Mend380.48 ± 0.133.1 × 10−2340.30 ± 0.230.69230.21 ± 0.290.72110.06 ± 0.300.47
CorrelationsAll sampleSample cutSample cutSample cut
based on coloursbased on Na i Dbased on Na i D + position
NSNerpNSNerpNSNerpNSNerp
(B − V)15 versus Mmax310.35 ± 0.160.31280.50 ± 0.103.5 × 10−2220.49 ± 0.107.3 × 10−2120.49 ± 0.220.40
(B − V)15 versus Mend300.33 ± 0.180.43270.44 ± 0.140.13210.49 ± 0.097.2 × 10−2120.59 ± 0.180.19
(B − V)30 versus Mmax560.30 ± 0.160.30500.47 ± 0.031.4 × 10−3360.39 ± 0.140.14180.30 ± 0.270.92
(B − V)30 versus Mend550.32 ± 0.170.27490.40 ± 0.136.1 × 10−2350.35 ± 0.190.36180.24 ± 0.290.83
(B − V)50 versus Mend500.39 ± 0.082.8 × 10−2450.33 ± 0.160.26300.34 ± 0.210.49150.42 ± 0.260.57
(B − V)70 versus Mend370.37 ± 0.170.23330.23 ± 0.290.74240.10 ± 0.300.35110.34 ± 0.310.92
(u − g)30 versus Mmax350.51 ± 0.122.0 × 10−3310.56 ± 0.032.1 × 10−3260.54 ± 0.061.3 × 10−2120.39 ± 0.220.59
(u − g)30 versus Mend340.36 ± 0.220.43310.41 ± 0.240.36250.49 ± 0.126.9 × 10−2120.25 ± 0.310.86
(g − r)15 versus Mmax330.53 ± 0.111.5 × 10−3300.57 ± 0.032.1 × 10−3230.69 ± 0.013.6 × 10−4120.52 ± 0.190.29
(g − r)15 versus Mend320.58 ± 0.116.6 × 10−3290.46 ± 0.149.0 × 10−2220.77 ± 0.025.8 × 10−5120.43 ± 0.270.62
(g − r)30 versus Mmax570.38 ± 0.170.11510.34 ± 0.110.10370.47 ± 0.166.2 × 10−2180.18 ± 0.280.69
(g − r)30 versus Mend560.49 ± 0.125.0 × 10−3500.36 ± 0.160.16360.55 ± 0.182.6 × 10−2180.08 ± 0.270.44
(g − Y)15 versus Mend130.66 ± 0.146.8 × 10−3120.73 ± 0.093.1 × 10−280.59 ± 0.210.355⋅⋅⋅ ± ⋅⋅⋅⋅⋅⋅
(g − Y)30 versus Mend390.41 ± 0.116.3 × 10−3350.54 ± 0.021.4 × 10−3250.27 ± 0.260.96140.25 ± 0.300.88
(g − Y)50 versus Mend380.48 ± 0.133.1 × 10−2340.30 ± 0.230.69230.21 ± 0.290.72110.06 ± 0.300.47

Notes. Four different samples are used: total (all), removing 10 per cent of the reddest objects (based on colours), only the SNe II with an Na i D equivalent width smaller than 1 Å (based on Na i D), and only the SNe II away from the host-galaxy nuclei with no Na i D equivalent width (based on Na i D + position).

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