The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope IV. Capabilities and predicted performance for exoplanet characterization
The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope IV. Capabilities and predicted performance for exoplanet characterization
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DOI：
10.1051/0004-6361/202142592
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发表时间：
2022-05-16
影响因子：
6.5
通讯作者：
Zeidler, P.
中科院分区：
文献类型：
--
作者：
Birkmann, S. M.;Ferruit, P.;Zeidler, P.
詹姆斯·韦伯太空望远镜(JWST)上的近红外光谱仪(NIRSpec)是一种非常通用的仪器，它提供了多目标和积分场光谱，在0.6到5.3微米的宽波长范围内具有不同的光谱分辨率(类似于30到类似3000)，使科学家能够研究从第一个星系到我们太阳系中的天体的许多科学主题。除了其集成场单元和对多目标光谱学的支持外，NIRSpec还具有几个固定狭缝和一个专门设计的大口径，以实现对系外行星的高精度时间序列和凌日以及日食观测。在这篇文章中，我们介绍了它在时间序列观测方面的能力，特别是系外行星的凌日和日食光谱。由于JWST的大收集面积和NIRSpec出色的吞吐量、光谱覆盖和探测器性能，这种模式将使科学家能够以前所未有的灵敏度表征系外行星的大气。
The Near-Inrared Spectrograph (NIRSpec) on the James Webb Space Telescope (JWST) is a very versatile instrument, offering mul-tiobject and integral field spectroscopy with varying spectral resolution (similar to 30 to similar to 3000) over a wide wavelength range from 0.6 to 5.3 micron, enabling scientists to study many science themes ranging from the first galaxies to bodies in our own Solar System. In addition to its integral field unit and support for multiobject spectroscopy, NIRSpec features several fixed slits and a wide aperture specifically designed to enable high precision time-series and transit as well as eclipse observations of exoplanets. In this paper we present its capabilities regarding time-series observations, in general, and transit and eclipse spectroscopy of exoplanets in particular. Due to JWST's large collecting area and NIRSpec's excellent throughput, spectral coverage, and detector performance, this mode will allow scientists to characterize the atmosphere of exoplanets with unprecedented sensitivity.