在ELT上的马赛克:从黑暗时代到现在,揭示恒星和星系物理学的高多重光谱

F. Hammer, S. Morris, J. Cuby, L. Kaper, M. Steinmetz, J. Afonso, B. Barbuy, E. Bergin, A. Finogenov, J. Gallego, S. Kassin, C. Miller, G. Ostlin, L. Penterricci, D. Schaerer, B. Ziegler, F. Chemla, G. Dalton, F. D. Frondat, C. Evans, D. L. Mignant, M. Puech, M. Rodrigues, R. Sánchez-Janssen, S. Taburet, L. Tasca, Y. Yang, S. Zanchetta, K. Dohlen, M. Dubbeldam, K. E. Hadi, A. Janssen, A. Kelz, M. Larrieu, I. Lewis, M. Macintosh, T. Morris, R. Navarro, W. Seifert
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引用次数: 5

摘要

先进的多目标摄谱仪MOSAIC与世界上最大的望远镜ELT的强大结合,将使我们能够比以往更深入地探索宇宙。MOSAIC是一种非常有效的仪器,可以为宇宙中众多微弱的光源提供光谱,包括最早的星系和宇宙再电离源。除了近红外多积分场单元(multi- ifu)外,MOSAIC在近红外和VIS中具有高复用性。因此,它非常适合在z=3-4的星系晕中进行暗物质(来自旋转曲线)和冷热气相重子的清单。MOSAIC将绘制出z=3的星系间介质的详细地图,在哈勃时间内矮星系的进化史,直接测量从恒星到几个Mpc的化学物质。最后,它将测量所有在星团引力透镜或附近星系晕周围的流中看到的微弱特征,使MOSAIC成为一个具有极大发现空间的强大仪器。MOSAIC的初步设计预计将于明年开始,鉴于该团队所做的仪器研究,它的准备程度已经很高了。
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MOSAIC on the ELT: High-multiplex Spectroscopy to Unravel the Physics of Stars and Galaxies from the Dark Ages to the Present Day
The powerful combination of the cutting-edge multi-object spectrograph MOSAIC with the world largest telescope, the ELT, will allow us to probe deeper into the Universe than was possible. MOSAIC is an extremely efficient instrument in providing spectra for the numerous faint sources in the Universe, including the very first galaxies and sources of cosmic reionization. MOSAIC has a high multiplex in the NIR and in the VIS, in addition to multi-Integral Field Units (Multi-IFUs) in NIR. As such it is perfectly suited to carry out an inventory of dark matter (from rotation curves) and baryons in the cool-warm gas phases in galactic haloes at z=3-4. MOSAIC will enable detailed maps of the intergalactic medium at z=3, the evolutionary history of dwarf galaxies during a Hubble time, the chemistry directly measured from stars up to several Mpc. Finally, it will measure all faint features seen in cluster gravitational lenses or in streams surrounding nearby galactic halos, providing MOSAIC to be a powerful instrument with an extremely large space of discoveries. The preliminary design of MOSAIC is expected to begin next year, and its level of readiness is already high, given the instrumental studies made by the team.
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