The James Webb Space Telescope
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- 作者：Jonathan P. Gardner ; John C. Mather ; Mark Clampin ; Rene Doyon ; Matthew A. Greenhouse ; Heidi B. Hammel ; John B. Hutchings ; Peter Jakobsen ; Simon J. Lilly and Knox S. Long ; et al.
- 关键词：galaxies ; formation ; infrared ; general ; planetary systems ; space vehicles ; instruments ; stars ; formation
- 刊名：Space Science Reviews
- 出版年：2006
- 出版时间：April, 2006
- 年：2006
- 卷：123
- 期：4
- 页码：485-606
- 全文大小：2,340 KB
- 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Astronomy
Extraterrestrial Physics and Space Sciences
Astrophysics
Planetology - 出版者：Springer Netherlands
- ISSN：1572-9672
文摘
The James Webb Space Telescope (JWST) is a large (6.6 m), cold (<50 K), infrared (IR)-optimized space observatory that will be launched early in the next decade into orbit around the second Earth–Sun Lagrange point. The observatory will have four instruments: a near-IR camera, a near-IR multiobject spectrograph, and a tunable filter imager will cover the wavelength range, 0.6 < ; < 5.0 μ m, while the mid-IR instrument will do both imaging and spectroscopy from 5.0 < ; < 29 μ m.The JWST science goals are divided into four themes. The key objective of The End of the Dark Ages: First Light and Reionization theme is to identify the first luminous sources to form and to determine the ionization history of the early universe. The key objective of The Assembly of Galaxies theme is to determine how galaxies and the dark matter, gas, stars, metals, morphological structures, and active nuclei within them evolved from the epoch of reionization to the present day. The key objective of The Birth of Stars and Protoplanetary Systems theme is to unravel the birth and early evolution of stars, from infall on to dust-enshrouded protostars to the genesis of planetary systems. The key objective of the Planetary Systems and the Origins of Life theme is to determine the physical and chemical properties of planetary systems including our own, and investigate the potential for the origins of life in those systems. Within these themes and objectives, we have derived representative astronomical observations.