The blue colors of Gamma-ray burst host galaxies
Abstract
There is now an increasing number of evidence supporting the idea that the cosmic Gamma-ray Bursts (GRBs) originate from the collapse of massive stars in distant star-forming galaxies. Because GRBs are likely detectable up to very high redshift, and because the gamma-rays are not attenuated by intervening columns of gas and dust, these phenomena thus offer a unique perspective to probe the star formation in the early Universe independently of the biases associated with dust extinction. We report on the R-K colors of the GRB host galaxies. We find that they are very blue sources, with colors comparable to those of the faint blue star-forming galaxies at high redshift.
Cite
@article{arxiv.astro-ph/0211252,
title = {The blue colors of Gamma-ray burst host galaxies},
author = {E. Le Floc'h and P. -A. Duc and I. F. Mirabel},
journal= {arXiv preprint arXiv:astro-ph/0211252},
year = {2007}
}
Comments
1 page, 1 figure, Conf. Proc., "Galaxy Evolution: Theory and Observations", Cozumel 2002, Eds. V. Avila-Reese, C. Firmani, C. Frenk, & C. Allen, RevMexAA SC (2002)