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arXiv 1206.6885astro-ph.IMastro-ph.COastro-ph.GAastro-ph.HE
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4 MOST- 4米多目标光谱望远镜

4MOST - 4-metre Multi-Object Spectroscopic Telescope

Roelof S. de Jong, Olga Bellido-Tirado, Cristina Chiappini, Éric Depagne, Roger Haynes, Diane Johl, Olivier Schnurr, Axel Schwope, Jakob Walcher, Frank Dionies,… 展开作者

Roelof S. de Jong, Olga Bellido-Tirado, Cristina Chiappini, Éric Depagne, Roger Haynes, Diane Johl, Olivier Schnurr, Axel Schwope, Jakob Walcher, Frank Dionies, Dionne Haynes, Andreas Kelz, Francisco S. Kitaura, Georg Lamer, Ivan Minchev, Volker Müller, Sebastián E. Nuza, Jean-Christophe Olaya, Tilmann Piffl, Emil Popow, Matthias Steinmetz, Uğur Ural, Mary Williams, Roland Winkler, Lutz Wisotzki, Wolfgang R. Ansorgb, Manda Banerji, Eduardo Gonzalez Solares, Mike Irwin, Robert C. Kennicutt, David King, Richard McMahon, Sergey Koposov, Ian R. Parry, Nicholas A. Walton, Gert Finger, Olaf Iwert, Mirko Krumpe, Jean-Louis Lizon, Mainieri Vincenzo, Jean-Philippe Amans, Piercarlo Bonifacio, Mathieu Cohen, Patrick Francois, Pascal Jagourel, Shan B. Mignot, Frédéric Royer, Paola Sartoretti, Ralf Bender, Frank Grupp, Hans-Joachim Hess, Florian Lang-Bardl, Bernard Muschielok, Hans Böhringer, Thomas Boller, Angela Bongiorno, Marcella Brusa, Tom Dwelly, Andrea Merloni, Kirpal Nandra, Mara Salvato, Johannes H. Pragt, Ramón Navarro, Gerrit Gerlofsma, Ronald Roelfsema, Gavin B. Dalton, Kevin F. Middleton, Ian A. Tosh, Corrado Boeche, Elisabetta Caffau, Norbert Christlieb, Eva K. Grebel, Camilla Hansen, Andreas Koch, Hans-G. Ludwig, Andreas Quirrenbach, Luca Sbordone, Walter Seifert, Guido Thimm, Trifon Trifonov, Amina Helmi, Scott C. Trager, Sofia Feltzing, Andreas Korn, Wilfried Boland

摘要:

4 MOST联合体目前正在对欧洲南方天文台进行概念设计研究,目的是为欧洲南方天文台4米级望远镜(VISTA)开发一个宽视场(>3平方度,目标>5平方度)、高复用(>1500光纤,目标3000光纤)光谱测量设施。4 MOST将在望远镜上永久运行,进行为期5年的公众调查,产生分辨率R~5000(λ=390-1000 nm)的2000多万光谱和R~ 20,000(395-456.5 nm和587-673 nm)的200多万光谱。4 MOST的设计特别旨在补充欧洲主要兴趣的三个关键的全天空天基天文台:盖亚,eROSITA和欧几里得。初步设计和性能估计的宽场校正器的概念。我们考虑两个光纤定位器的概念,一个著名的Phi-Theta系统和一个新的R-Theta的概念与一个大的巡逻面积。光谱仪是固定配置的双臂光谱仪,具有用于高分辨率和低分辨率的专用光谱仪。一个完整的设施模拟器正在开发中,以指导权衡决定的最佳视野,所需的光纤数量,以及高分辨率到低分辨率的光纤的相对比例。模拟目录与模板光谱从七个设计参考调查进行了模拟,以验证4 MOST的科学要求。4 MOST联盟的目标是在2018年底之前交付完整的4 MOST设施,并在一年后开始为联盟和ESO社区目标提供高级别的数据产品,每年递增。

英文摘要:

The 4MOST consortium is currently halfway through a Conceptual Design study for ESO with the aim to develop a wide-field (>3 square degree, goal >5 square degree), high-multiplex (>1500 fibres, goal 3000 fibres) spectroscopic survey facility for an ESO 4m-class telescope (VISTA). 4MOST will run permanently on the telescope to perform a 5 year public survey yielding more than 20 million spectra at resolution R~5000 (λ=390-1000 nm) and more than 2 million spectra at R~20,000 (395-456.5 nm & 587-673 nm). The 4MOST design is especially intended to complement three key all-sky, space-based observatories of prime European interest: Gaia, eROSITA and Euclid. Initial design and performance estimates for the wide-field corrector concepts are presented. We consider two fibre positioner concepts, a well-known Phi-Theta system and a new R-Theta concept with a large patrol area. The spectrographs are fixed configuration two-arm spectrographs, with dedicated spectrographs for the high- and low-resolution. A full facility simulator is being developed to guide trade-off decisions regarding the optimal field-of-view, number of fibres needed, and the relative fraction of high-to-low resolution fibres. Mock catalogues with template spectra from seven Design Reference Surveys are simulated to verify the science requirements of 4MOST. The 4MOST consortium aims to deliver the full 4MOST facility by the end of 2018 and start delivering high-level data products for both consortium and ESO community targets a year later with yearly increments.

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