Detecting Lyman Alpha Emitters in the Sub-millimeter Export

@article{citeulike:5433533, 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\_\alpha \> 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.}, archivePrefix = {arXiv}, author = {Dayal, Pratika and Hirashita, Hiroyuki and Ferrara, Andrea}, citeulike-article-id = {5433533}, citeulike-linkout-0 = {http://arxiv.org/abs/0908.1571}, citeulike-linkout-1 = {http://arxiv.org/pdf/0908.1571}, day = {11}, eprint = {0908.1571}, keywords = {alma, dust, evolution, galaxies, gas, lymanalpha, sn, starburst, submm}, month = {Aug}, posted-at = {2009-08-13 23:45:08}, priority = {2}, title = {Detecting Lyman Alpha Emitters in the Sub-millimeter}, url = {http://arxiv.org/abs/0908.1571}, year = {2009} }

TY - JOUR ID - citeulike:5433533 L3 - citeulike-article-id:5433533 N2 - 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_\alpha > 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. TI - Detecting Lyman Alpha Emitters in the Sub-millimeter KW - alma KW - dust KW - evolution KW - galaxies KW - gas KW - lymanalpha KW - sn KW - starburst KW - submm AU - Dayal, Pratika AU - Hirashita, Hiroyuki AU - Ferrara, Andrea PY - 2009/Aug/11/ UR - http://arxiv.org/abs/0908.1571 ER -