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The blue colors of Gamma-ray burst host galaxies | | E. Le Floc’h
; P.-A. Duc
; I.F. Mirabel
; | | Date: |
12 Nov 2002 | | Subject: | astro-ph | | 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. | | Source: | arXiv, astro-ph/0211252 | | Services: | Forum | Review | PDF | Favorites | |
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