ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO): Millimeter properties of stellar mass selected galaxies
ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO): Millimeter properties of stellar mass selected galaxies
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ALMA 26 arcmin2 一毫米处的 GOODS-S 巡天 (ASAGAO)：选定星系的恒星质量的毫米特性
DOI：
10.1093/pasj/psaa057
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发表时间：
2020
影响因子：
2.3
通讯作者：
Tadaki Ken-ichi
中科院分区：
文献类型：
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作者：
Yamaguchi Yuki;Kohno Kotaro;Hatsukade Bunyo;Wang Tao;Yoshimura Yuki;Ao Yiping;Dunlop James S;Egami Eiichi;Espada Daniel;Fujimoto Seiji;Hayatsu Natsuki H;Ivison Rob J;Kodama Tadayuki;Kusakabe Haruka;Nagao Tohru;Ouchi Masami;Rujopakarn Wiphu;Tadaki Ken-ichi
我们利用GOODS-S一毫米处的ALMA二十六弧分巡天（ASAGAO），通过阿塔卡马大型毫米/亚毫米阵列（ALMA）获得的南大天文台起源深巡天（GOODS-S）中26角分2区域的深1.2 毫米连续观测，来探测所选K波段的尘埃覆盖恒星形成（即选定的恒星质量）星系，取自四星星系演化巡天（ZFOURGE）目录。根据结合GOODS-South油田的ASAGAO和ALMA档案数据创建的ASAGAO组合图，我们发现24个ZFOURGE源具有1.2 mm对应源，信噪比>4.5（1σ ≃ 30–70 μJy beam−1at 1.2 mm）。它们的红移中值估计为中值= 2.38 ± 0.14。它们通常遵循恒星质量与恒星形成速率（即恒星形成星系的主序列）之间的紧密关系。与没有 ALMA 检测的 ZFOURGE 星系相比，ALMA 检测到的 ZFOURGE 源表现出系统性更大的红外 (IR) 过剩 (IRX ≡LIR/LUV)，尽管它们具有相似的红移、恒星质量和恒星形成率。这意味着一致的恒星质量与 IRX 关系（已知在静止框架紫外线选择的星系中是紧密的）不能完全预测恒星质量选择的星系的 ALMA 可探测性。我们发现 ALMA 检测到的 ZFOURGE 源是宇宙红外恒星形成速率密度 = 2-3 的主要贡献者。
We make use of the ALMA twenty-Six Arcmin2survey of GOODS-S At One-millimeter (ASAGAO), deep 1.2 mm continuum observations of a 26-arcmin2region in the Great Observatories Origins Deep Survey-South (GOODS-S) obtained with Atacama Large Millimeter/sub-millimeter Array (ALMA), to probe dust-enshrouded star formation inK-band selected (i.e., stellar mass selected) galaxies, which are drawn from the FourStar Galaxy Evolution Survey (ZFOURGE) catalog. Based on the ASAGAO combined map, which was created by combining ASAGAO and ALMA archival data in the GOODS-South field, we find that 24 ZFOURGE sources have 1.2 mm counterparts with a signal-to-noise ratio >4.5 (1σ ≃ 30–70 μJy beam−1at 1.2 mm). Their median redshift is estimated to bemedian= 2.38 ± 0.14. They generally follow the tight relationship of the stellar mass versus star formation rate (i.e., the main sequence of star-forming galaxies). ALMA-detected ZFOURGE sources exhibit systematically larger infrared (IR) excess (IRX ≡LIR/LUV) compared to ZFOURGE galaxies without ALMA detections even though they have similar redshifts, stellar masses, and star formation rates. This implies the consensus stellar-mass versus IRX relation, which is known to be tight among rest-frame-ultraviolet-selected galaxies, cannot fully predict the ALMA detectability of stellar-mass-selected galaxies. We find that ALMA-detected ZFOURGE sources are the main contributors to the cosmic IR star formation rate density at= 2–3.