MOLECULAR CO(1-0) GAS IN THE z ~ 2 RADIO GALAXY MRC 0152-209
MOLECULAR CO(1-0) GAS IN THE z ~ 2 RADIO GALAXY MRC 0152-209
复制标题
z ~ 2 无线电星系中的分子 CO(1-0) 气体 MRC 0152-209
DOI：
10.1088/2041-8205/734/1/l25
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Emonts B
中科院分区：
文献类型：
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作者：
Emonts B
报道了用澳大利亚望远镜紧凑型阵列宽带后端(ATCA/CABB)探测高z射电星系MRC 0152-209(z=1.92)中的CO(1-0)分子气体。这是迄今为止在高z射电星系中已知的第三次探测到CO(1-0)。CO(1-0)是整个分子气体含量(包括广泛存在的、低密度和亚热激发组分)的最强示踪剂，因此对CO(1-0)的观测对于研究早期宇宙中的星系演化是至关重要的。在MRC0152-209时，我们得到了L的−‘Co=6.6±2.0×10 10K Km S的MRC1Pc2，与几个高z亚毫米恒星形成的BZK星系的CO(1-0)观测结果相当.CO(1-0)跟踪的总分子氢质量为
We report the detection of molecular CO (1–0) gas in the high-z radio galaxy MRC 0152-209 (z= 1.92) with the Australia Telescope Compact Array Broadband Backend (ATCA/CABB). This is the third known detection of CO (1–0) in a high-z radio galaxy to date. CO (1–0) is the most robust tracer of the overall molecular gas content (including the widespread, low-density, and sub-thermally excited component), hence observations of CO (1–0) are crucial for studying galaxy evolution in the early universe. We derive L'CO= 6.6±2.0× 10 10 K km s− 1 pc 2 for MRC 0152-209, which is comparable to that derived from CO (1–0) observations of several high-z submillimeter and star-forming BzK galaxies. The CO (1–0) traces a total molecular hydrogen mass of