Supernova environments in J-PLUS. Normalized Cumulative Rank distributions and stellar population synthesis, combining narrow- and broad-band filters
arxiv(2023)
摘要
We study the local environmental properties of 418 supernovae (SNe) of all
types using data from the Javalambre Photometric Local Universe Survey
(J-PLUS), which includes 5 broad- and 7 narrow-band imaging filters, using two
independent analyses: 1) the Normalized Cumulative Rank (NCR) method, utilizing
all 12 single bands along with five continuum-subtracted narrow-band emission
and absorption bands, and 2) simple stellar population (SSP) synthesis, where
we build spectral energy distributions (SED) of the surrounding SN environment
using the 12 filters. Improvements over previous works include: (i) the
extension of the NCR technique to other filters using a set of homogeneous
data; (ii) a correction for extinction to all bands based on the relation
between the g-i color and the color excess; and (iii) a correction for the
[NII] line contamination that falls within the Hα filter. All NCR
distributions in the broad-band filters, tracing the overall light distribution
in each galaxy, are similar to each other, being type Ia, II and IIb SNe are
preferably located in redder environments than the other SN types. The radial
distribution of the SNe shows that type IIb SNe seem to have a preference for
occurring in the inner regions of galaxies. All core-collapse SN (CC) types are
strongly correlated to the [OII] emission, which traces SFR. The NCR
distributions of the Ca II triplet show a clear division between II/IIb/Ia and
Ib/Ic/IIn subtypes, which is interpreted as a difference in the environmental
metallicity. Regarding the SSP synthesis, we found that including the 7 J-PLUS
narrow filters in the fitting process has a more significant effect for the CC
SN environmental parameters than for SNe Ia, shifting their values towards more
extinct, younger, and more star-forming environments, due to the presence of
strong emission-lines and stellar absorptions in those narrow-bands.
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