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- W3083969231 abstract "We have used the Atacama Large Millimeter/submillimeter Array (ALMA) to carry out a search for CO (3−2) or (4−3) emission from the fields of 12 high-metallicity ([M/H] ≥ −0.72 dex) damped Lyα absorbers (DLAs) at z ≈ 1.7–2.6. We detected CO emission from galaxies in the fields of five DLAs (two of which have been reported earlier), obtaining high molecular gas masses, . The impact parameters of the CO emitters to the QSO sight line lie in the range b ≈ 5.6–100 kpc, with the three new CO detections having . The highest CO line luminosities and inferred molecular gas masses are associated with the highest-metallicity DLAs, with [M/H] ≳ −0.3 dex. The high inferred molecular gas masses may be explained by a combination of a stellar mass–metallicity relation and a high molecular gas-to-star mass ratio in high-redshift galaxies; the DLA galaxies identified by our CO searches have properties consistent with those of emission-selected samples. None of the DLA galaxies detected in CO emission were identified in earlier optical or near-IR searches and vice versa; DLA galaxies earlier identified in optical/near-IR searches were not detected in CO emission. The high ALMA CO and C[ii] 158 μm detection rate in high-z, high-metallicity DLA galaxies has revolutionized the field, allowing the identification of dusty, massive galaxies associated with high-z DLAs. The H i-absorption criterion identifying DLAs selects the entire high-z galaxy population, including dusty and UV-bright galaxies, in a wide range of environments." @default.
- W3083969231 created "2020-09-14" @default.
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- W3083969231 date "2020-09-18" @default.
- W3083969231 modified "2023-10-12" @default.
- W3083969231 title "High Molecular Gas Masses in Absorption-selected Galaxies at <i>z</i> ≈ 2" @default.
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- W3083969231 doi "https://doi.org/10.3847/2041-8213/abb4e1" @default.
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