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arXiv 1709.01289astro-ph.GA
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MeerKAT天炉座调查

The MeerKAT Fornax Survey

P. Serra, W. J. G. de Blok, G. L. Bryan, S. Colafrancesco, R. -J. Dettmar, B. S. Frank, F. Govoni, G. I. G. Józsa, R. C. Kraan-Korteweg, S. I. Loubser, F. M. Ma… 展开作者

P. Serra, W. J. G. de Blok, G. L. Bryan, S. Colafrancesco, R. -J. Dettmar, B. S. Frank, F. Govoni, G. I. G. Józsa, R. C. Kraan-Korteweg, S. I. Loubser, F. M. Maccagni, M. Murgia, T. A. Oosterloo, R. F. Peletier, R. Pizzo, M. Ramatsoku, L. Richter, M. W. L. Smith, S. C. Trager, J. H. van Gorkom, M. A. W. Verheijen

摘要:

我们提出的科学案例和观测计划的MeerKAT天炉座调查,HI和无线电连续调查的天炉座星系团进行与SKA前体MeerKAT。天炉座是20 Mpc以内第二大的星团,也是南半球最大的邻近星团。它的低X射线光度使它代表了大多数星系生活的环境,以及发生重大星系演化的环境。天炉座的持续增长使其成为研究星系团组装、星系团中气体吸积和剥离的物理学以及这些过程与宇宙网中中性介质之间的联系的绝佳实验室。我们将观测到一个12度的$^2$区域,其距离星团中心的投影距离为1.5百万秒差距。我们将在1kpc分辨率下研究低至1e+19 cm $^{-2}$的几倍柱密度的已分辨星系的HI形态,测量低至M(HI)5e+5 M(太阳)的HI质量函数的斜率,并在此基础上研究高至1e+19 cm的几倍柱密度的已分辨星系的HI形态。并试图在10千秒差距的分辨率下探测到宇宙网中达到1e+18 cm $^{-2}$柱密度的HI。

英文摘要:

We present the science case and observations plan of the MeerKAT Fornax Survey, an HI and radio continuum survey of the Fornax galaxy cluster to be carried out with the SKA precursor MeerKAT. Fornax is the second most massive cluster within 20 Mpc and the largest nearby cluster in the southern hemisphere. Its low X-ray luminosity makes it representative of the environment where most galaxies live and where substantial galaxy evolution takes place. Fornax's ongoing growth makes it an excellent laboratory for studying the assembly of clusters, the physics of gas accretion and stripping in galaxies falling in the cluster, and the connection between these processes and the neutral medium in the cosmic web. We will observe a region of 12 deg$^2$ reaching a projected distance of 1.5 Mpc from the cluster centre. This will cover a wide range of environment density out to the outskirts of the cluster, where gas-rich in-falling groups are found. We will: study the HI morphology of resolved galaxies down to a column density of a few times 1e+19 cm$^{-2}$ at a resolution of 1 kpc; measure the slope of the HI mass function down to M(HI) 5e+5 M(sun); and attempt to detect HI in the cosmic web reaching a column density of 1e+18 cm$^{-2}$ at a resolution of 10 kpc.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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