Physical conditions and element abundances in SN and GRB host galaxies at different redshifts

Abstract

We compare the physical parameters and the relative abundances calculated throughout supernova (SN) and gamma-ray burst (GRB) host galaxies by the detailed modelling of the spectra. The results show that : 1) shock velocities are lower in long period GRB (LGRB) than in SN host galaxies. 2) O/H relative abundance in SN hosts are scattered within a range 8.0 <12+log(O/H)<8.85 but they are close to solar in LGRB hosts. N/H are lower than solar for both SN and LGRB. 3) The starburst temperatures within a few SN hosts reach Ts >10^5 K. Ts in LGRB hosts are 3-8 10^4 K. 4) Ha increases with the ionization parameter U. We suggest that SN-host symbiosis is stronger in terms of host galaxy activity than GRB-host in the range of energies related to the near UV - optical - near IR spectra.

20 pages, 9 figures. Accepted for publication in the MNRAS

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Cited by in corpus (6)

• Evolution of N/O ratios in galaxies from cosmological hydrodynamical simulations
• A comprehensive statistical study on gamma-ray bursts
• The Gaia-ESO Survey: the N/O abundance ratio in the Milky Way
• N/O abundance ratios in gamma-ray burst and supernova host galaxies at z<4. Comparison with AGN, starburst and HII regions
• Metallicities in long GRB host galaxies at z$<$0.5 calculated by the detailed modelling of optical and infrared line ratios
• Shock fronts in the long GRB031203 host galaxy