GOODS-HERSCHEL: evidence for a UV extinction bump in galaxies at z > 1

Details GOODS-HERSCHEL: evidence for a UV extinction bump in galaxies at z > 1 GOODS-HERSCHEL: evidence for a UV extinction bump in galaxies at z > 1

2011-07-06

arxiv.org/abs/1107.1049v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

17 pages,12 figures, accepted for publication in A&A

Scientific paper

Dust attenuation curves in external galaxies are useful to study their dust properties as well as to interpret their intrinsic spectral energy distributions. In particular the presence or absence of a UV bump at 2175 A remains an open issue which has consequences on the interpretation of broad band colours of distant galaxies. We study the dust attenuation curve in the UV range at z >1. In particular we search for the presence of a UV bump. We use deep photometric data of the CDFS obtained with intermediate and broad band filters by the MUSYC project to sample the UV rest-frame of galaxies with 1

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