PISCO: The Pmas/ppak Integral-field Supernova hosts COmpilation

TL;DR

PISCO is the largest integral-field spectroscopy compilation of supernova host galaxies, providing detailed environmental analysis that reveals differences in stellar populations and gas properties across supernova types.

Contribution

This paper introduces PISCO, the largest IFS dataset of SN hosts, and presents novel statistical analysis of HII regions and SN environments, highlighting differences among SN subtypes.

Findings

SNe Ic are found in more metal-rich, higher star formation environments.

SNe IIb occur in distinct environments compared to other core-collapse SNe.

SNe IIn are associated with both young and old stellar populations.

Abstract

We present the Pmas/ppak Integral-field Supernova hosts COmpilation (PISCO) which comprises Integral Field Spectroscopy (IFS) of 232 supernova (SN) host galaxies, that hosted 272 SNe, observed over several semesters with the 3.5m telescope at the Calar Alto Observatory (CAHA). PISCO is the largest collection of SN host galaxies observed with wide-field IFS, totaling 466,347 individual spectra covering a typical spatial resolution of $\sim$380 pc. While focused studies regarding specific SN Ia- related topics will be published elsewhere, this paper aims to present the properties of the SN environments with stellar population (SP) synthesis and the gas-phase ISM, providing additional results separating stripped-envelope SNe into their subtypes. With 11,270 HII regions detected in all galaxies, we present for the first time an HII region statistical analysis, that puts HII regions that have hosted SNe in context with all other SF clumps within their galaxies. SNe Ic are associated to more metal-rich, higher EW(H{\alpha}) and higher SF rate environments within their host galaxies than the mean of all HII regions detected within each host, on contrary SNe IIb occur at the most different environments compared to other CC SNe types. We find two clear components of young and old SP at SNe IIn locations. We find that SNe II fast-decliners (IIL) tend to explode at locations where {\Sigma}SFR is more intense. Finally, we outline how a future dedicated IFS survey of galaxies in parallel to an untargeted SN search would overcome the biases in current environmental studies.