Constraining the thermal dust content of Lyman break galaxies in an overdense field at z ~ 5 - Archive ouverte HAL
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2010

Constraining the thermal dust content of Lyman break galaxies in an overdense field at z ~ 5

Résumé

We have carried out 870-mum observations in the J1040.7-1155 field, known to host an overdensity of Lyman break galaxies at z = 5.16 +/- 0.05. We do not detect any individual source at the S870mum = 3.0mJybeam-1 (2sigma) level. A stack of nine spectroscopically confirmed z > 5 galaxies also yields a non-detection, constraining the submillimetre flux from a typical galaxy at this redshift to S870mum < 0.85mJy, which corresponds to a mass limit Mdust < 1.2 × 108Msolar (2sigma). This limits the mass of thermal dust in distant Lyman break galaxies to less than one-tenth of their typical stellar mass. We see no evidence for strong submillimetre galaxies associated with the ultraviolet-selected galaxy overdensity, but cannot rule out the presence of fainter, less massive sources.

Dates et versions

hal-03786469 , version 1 (23-09-2022)

Identifiants

Citer

Elizabeth R. Stanway, Malcolm N. Bremer, Luke J. M. Davies, Matthew D. Lehnert. Constraining the thermal dust content of Lyman break galaxies in an overdense field at z ~ 5. Monthly Notices of the Royal Astronomical Society, 2010, 407, pp.L94-L98. ⟨10.1111/j.1745-3933.2010.00912.x⟩. ⟨hal-03786469⟩
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