Modelling line ratios and continuum SED of NGC4993 and other short GRB host galaxies

Understand

We present a detailed spectral modelling of NGC4993 -- the host galaxy of GW170817 -- and other SGRB host galaxies.

• In order to determine their physical conditions and the element abundances, we have gathered spectroscopic and photometric data from the literature.
• The observation data are sometimes missing preventing us from fully constraining the model.
• However, for most of the SGRB hosts the [OIII]5007/Hb and [NII]6548/Ha line ratios are reported.