Nearby supernova host galaxies from the CALIFA survey - II. Supernova environmental metallicity

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Volume 591 (July 2016)

A&A, 591 (2016) A48

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Table 5

Distribution properties of the differences between the metallicity estimated from local measurements and the metallicity estimated using different proxies.

SN type	Mean	σ	σ _m	Median	N

12+log(O/H)_{local−total}

Ia^a	0.029	0.050	0.008	0.032	39
Ib/c	0.012	0.064	0.013	0.020	25
II	0.006	0.078	0.012	0.008	44

12+log(O/H)_{local−H II}

Ia	−0.004	0.035	0.006	0.001	39
Ib/c	0.007	0.037	0.007	−0.001	25
II	0.008	0.042	0.006	0.002	42

12+log(O/H)_{local−gradient}

Ia	−0.014	0.045	0.007	−0.007	39
Ib/c	−0.003	0.041	0.008	−0.002	25
II	0.001	0.069	0.011	0.005	43

12+log(O/H)_{local−central}

Ia	−0.018	0.056	0.014	−0.026	16
Ib/c	−0.024	0.077	0.018	−0.019	19
II^a	−0.056	0.082	0.015	−0.082	31

12+log(O/H)_{local−central+gradient}

Ia^a	0.052	0.056	0.014	0.057	16
Ib/c^a	0.043	0.077	0.018	0.036	19
II	0.020	0.071	0.013	0.003	31

log(Z_m)_{local−total}

Ia	−0.004	0.150	0.023	−0.011	44
Ib/c	0.004	0.150	0.034	0.047	19
II	0.042	0.178	0.032	0.047	30

log(Z_m)_{local−central}

Ia^a	−0.086	0.185	0.028	−0.070	44
Ib/c^a	−0.083	0.131	0.030	−0.099	19
II	−0.029	0.311	0.057	−0.024	30

Notes. Shown are the mean, the standard deviation σ, the standard deviation of the mean σ_m, the median and the number of SNe.

^(a)

statistically significant difference.

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