Supernovae SDSS Host Metallicity Catalog and Resulting Metallicity
  Distributions by SNe Type
  In support of ongoing projects we have compiled a database of supernovae with
host metallicities determined from spectroscopy in the Sloan Digital Sky Survey
(SDSS) which we are providing as a catalog for the general use of the
community. Here we provide metallicity values in the KK04 (Kobulnicky & Kewley
2004), T04 (Tremonti et al. 2004), and D16 (Dopita et al. 2016) diagnostics as
well as a compilation of the relevant line fluxes to allow users to compute
their own metallicities. The sample presented here has approximately 1700
objects with a metallicity in at least one diagnostic, with about 1200 objects
in KK04 of which over 300 are core-collapse SNe or about twice the number of
core-collapse objects present in the compilation of Kelly & Kirshner (2012)
reflecting the recent considerable improvement in SNe detection capabilities.
We find some differences in the metallicity distributions between the subtypes
of both Type II and Type Ia SNe and speculate that metallicity may play a role
in if Type II SNe events happen as IIb & IIn or as standard Type II.
