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MOONS:用于VLT的多目标光学和近红外光谱仪

MOONS: a Multi-Object Optical and Near-infrared Spectrograph for the VLT

M. Cirasuolo, J. Afonso, R. Bender, P. Bonifacio, C. Evans, L. Kaper, E. Oliva, L. Vanzi, M. Abreu, E. Atad-Ettedgui, C. Babusiaux, F. Bauer, P. Best, N. Bezawa… 展开作者

M. Cirasuolo, J. Afonso, R. Bender, P. Bonifacio, C. Evans, L. Kaper, E. Oliva, L. Vanzi, M. Abreu, E. Atad-Ettedgui, C. Babusiaux, F. Bauer, P. Best, N. Bezawada, I. Bryson, A. Cabral, K. Caputi, M. Centrone, F. Chemla, A. Cimatti, M-R. Cioni, G. Clementini, J. Coelho, E. Daddi, J. Dunlop, S. Feltzing, A. Ferguson, H. Flores, A. Fontana, J. Fynbo, B. Garilli, A. Glauser, I. Guinouard, F. Hammer, P. Hastings, A. Hess, R. Ivison, P. Jagourel, M. Jarvis, G. Kauffman, A. Lawrence, D. Lee, G. Licausi, S. Lilly, D. Lorenzetti, R. Maiolino, F. Mannucci, R. McLure, D. Minniti, D. Montgomery, B. Muschielok, K. Nandra, R. Navarro, P. Norberg, L. Origlia, N. Padilla, J. Peacock, F. Pedicini, L. Pentericci, J. Pragt, M. Puech, S. Randich, A. Renzini, N. Ryde, M. Rodrigues, F. Royer, R. Saglia, A. Sanchez, H. Schnetler, D. Sobral, R. Speziali, S. Todd, E. Tolstoy, M. Torres, L. Venema, F. Vitali, M. Wegner, M. Wells, V. Wild, G. Wright

摘要:

MOONS是一种新的概念设计,用于甚大望远镜(VLT)的多目标光学和近红外光谱仪,由ESO选择进行A阶段研究。基线设计由1000个光纤组成,可部署在500平方弧分的视场内,这是VLT的Nasmyth焦点提供的最大巡逻场。总波长覆盖范围为0.8 μ m-1.8 μ m,有中分辨率和高分辨率两种分辨率模式。在中等分辨率模式下(R = 4,000 - 6,000)同时观察到0.8um-1.8um的整个波长范围,而高分辨率模式同时覆盖三个选定的光谱区域:一个围绕着CalII三联体(R = 8,000)测量径向速度,R = 20,000处有两个区域,一个在J波段,一个在H波段,用于详细测量化学丰度。8.2米甚大望远镜(VLT)的掌握与卫星的大复用和波长覆盖(延伸到近红外)相结合,将提供必要的观测能力来研究整个宇宙历史上的星系形成和演化,从我们的银河系,通过红移沙漠,直到z> 8 - 9的再电离时代。与此同时,高光谱分辨率模式将使天文学家能够研究我们银河系中恒星的化学丰度,特别是在突出部高度模糊的区域,并为盖亚任务提供必要的后续行动。这种特性和多功能性使MOONS成为VLT期待已久的主力近红外MOS,这将完美地补充FLAMES和VIMOS执行的光谱学。

英文摘要:

MOONS is a new conceptual design for a Multi-Object Optical and Near-infrared Spectrograph for the Very Large Telescope (VLT), selected by ESO for a Phase A study. The baseline design consists of 1000 fibers deployable over a field of view of 500 square arcmin, the largest patrol field offered by the Nasmyth focus at the VLT. The total wavelength coverage is 0.8um-1.8um and two resolution modes: medium resolution and high resolution. In the medium resolution mode (R=4,000-6,000) the entire wavelength range 0.8um-1.8um is observed simultaneously, while the high resolution mode covers simultaneously three selected spectral regions: one around the CaII triplet (at R=8,000) to measure radial velocities, and two regions at R=20,000 one in the J-band and one in the H-band, for detailed measurements of chemical abundances. The grasp of the 8.2m Very Large Telescope (VLT) combined with the large multiplex and wavelength coverage of MOONS - extending into the near-IR - will provide the observational power necessary to study galaxy formation and evolution over the entire history of the Universe, from our Milky Way, through the redshift desert and up to the epoch of re-ionization at z>8-9. At the same time, the high spectral resolution mode will allow astronomers to study chemical abundances of stars in our Galaxy, in particular in the highly obscured regions of the Bulge, and provide the necessary follow-up of the Gaia mission. Such characteristics and versatility make MOONS the long-awaited workhorse near-IR MOS for the VLT, which will perfectly complement optical spectroscopy performed by FLAMES and VIMOS.

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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