Spectral energy distributions of submm/radio bright gamma-ray burst host galaxies

Details Spectral energy distributions of submm/radio bright gamma-ray burst host galaxies Spectral energy distributions of submm/radio bright gamma-ray burst host galaxies

2007-08-29

arxiv.org/abs/0708.4014v1

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure, Proceedings of the Conference "The Multicoloured Landscape of Compact Objects and their Explosive Origins"

Scientific paper

10.1063/1.2774852

We present optical to radio spectral energy distribution fitting of the host galaxies of four long gamma-ray bursts: 980703, 000210, 000418 and 010222, which were detected at submillimetre and/or radio wavelengths. We find that only very young starburst galaxy models are consistent with the data having both blue optical colors and a pronounced submm emission. For each host we are able to construct a model consistent with the short- and long-wavelength parts of the spectra. We find galaxy ages ranging from 0.09 to 2.0 Gyrs and star formation rates ranging from 138 to 380 MSun/yr.

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