Detecting Lyman Alpha Emitters in the Sub-millimeter

Abstract

Using the results from a previously developed Lyman Alpha/continuum production/transmission and dust enrichment model for Lyman Alpha Emitters (LAEs), based on cosmological SPH simulations, we assess the detectability of their dust-reprocessed sub-millimeter (submm) radiation. As supernovae (rather than evolved stars) control dust formation and destruction processes, LAEs are relatively dust-poor with respect to local galaxies: they have low dust-to-gas ratios (0.05 times the dust-to-gas ratio of the Milky Way) in spite of their relatively high metallicity, which is approximately 10-50% of the solar value. Using the derived escape fraction of ultraviolet (UV) continuum photons we compute the UV luminosity absorbed by dust and re-emitted in the far infrared. The LAE submm fluxes correlate with their Lyman Alpha luminosity: about (3%, 1%) at z=(5.7, 6.6) of the LAEs in our simulated sample (those with with Log L_α> 43.1) would have fluxes at 850 micrometer (the optimal band for detection) in excess of 0.12 mJy and will be therefore detectable at 5 sigma with ALMA with an integration time of only 1 hour. Such detections would open a new window on the physical conditions prevailing in these most distant galaxies.

6 pages, 3 figures, Accepted for publication in MNRAS with minor additions

References in corpus (14)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
• The End of the Reionization Epoch Probed by Ly-alpha Emitters at z=6.5 in the Subaru Deep Field
• Dust Formation and Survival in Supernova Ejecta
• Chemical enrichment of galaxy clusters from hydrodynamical simulations
• Ly-alpha Emission-Line Galaxies at z = 3.1 in the Extended Chandra Deep Field South
• A galaxy at a redshift z = 6.96
• Stellar sources of dust in the high redshift Universe
• Effects of Dust Geometry in Lyman Alpha Galaxies at z = 4.4
• Lyman Alpha Emitters in the Hierarchically Clustering Galaxy Formation
• Properties of the galaxy population in hydrodynamical simulations of clusters
• Lyman Alpha Emitter Evolution in the Reionization Epoch
• Signatures of reionization on Lyman alpha emitters
• The Expected Detection of Dust Emission from High-Redshift Lyman Alpha Galaxies

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