Dust Emission from the Lensed Lyman Break Galaxy cB58

Details Dust Emission from the Lensed Lyman Break Galaxy cB58 Dust Emission from the Lensed Lyman Break Galaxy cB58

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.6505b&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #65.05; Bulletin of the American Astronomical Society, Vol. 32, p.1510

Astronomy and Astrophysics

Astronomy

Scientific paper

We detect 1.2 mm continuum emission from dust in the gravitationally lensed Lyman break galaxy MS 1512+36-cB58. Our detected flux is surprisingly low: relative to local starburst galaxies, cB58 appears to produce less far-IR emission than its UV reddening predicts. Since all of the source's properties except its UV reddening match those expected for a young starburst with little dust, we conclude that its UV spectral slope is an unreliable indicator of its UV extinction. Alternate scenarios to account for the far-IR shortfall which rely on a high dust temperature or differential magnification are less satisfactory. Our result underscores the risks inherent in characterizing the cosmic star formation history from rest-UV observations alone. This work has been supported by the Max Planck Society.

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