TWINKLE: a low earth orbit visible and infrared exoplanet spectroscopy observatory
TWINKLE: a low earth orbit visible and infrared exoplanet spectroscopy observatory
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TWINKLE：近地轨道可见光和红外系外行星光谱观测站
DOI：
10.1117/12.2233691
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Curry P
中科院分区：
文献类型：
--
作者：
Curry P
“闪烁”是一项旨在对太阳系外行星进行可见光和近红外光谱观测的太空任务。Twinkle高度稳定的仪器将允许对不同类型恒星周围的各种行星进行光度和光谱观测，重点关注靠近黄道的明亮光源。这些行星将通过凌日和日食光度测定和光谱学，以及相位曲线、日食测绘和多个窄带时间序列来观察。Twinkle观测到的目标将由已知的系外行星组成，这些系外行星主要是由我们银河系中现有的和即将进行的地面调查发现的（例如WASP， HATNet， NGTS和径向速度调查），也将以空间天文台（K2， GAIA, Cheops， TESS）的新发现为特色。Twinkle是一颗小型卫星，其有效载荷设计用于执行高质量的天体物理观测，同时适应现有低地球轨道商业卫星平台的设计。萨里- 300总线,发射到低地球轨道与太阳同步极到2019年,将携带一两半米类望远镜的仪器(可见光和近红外线光谱仪与分辨能力0.4和4.5μm - R ~ 300的低端波长范围)主要是利用飞行证明飞船系统设计的萨里卫星技术有限公司和实验室仪器高和一些低TRL元素由英国机构组成的财团。“闪烁”的设计将能够观测银河系中至少100颗系外行星的化学成分和天气，包括超级地球（质量为地球1-10倍的岩石行星）、海王星、次海王星和木星这样的气态巨行星。它还将允许对1000多颗系外行星进行可见光和红外线的后续光度观测，以及对太阳系天体、明亮恒星和磁盘的观测。
Twinkle is a space mission designed for visible and near-IR spectroscopic observations of extrasolar planets. Twinkle’s highly stable instrument will allow the photometric and spectroscopic observation of a wide range of planetary classes around different types of stars, with a focus on bright sources close to the ecliptic. The planets will be observed through transit and eclipse photometry and spectroscopy, as well as phase curves, eclipse mapping and multiple narrow-band time-series. The targets observed by Twinkle will be composed of known exoplanets mainly discovered by existing and upcoming ground surveys in our galaxy (e.g. WASP, HATNet, NGTS and radial velocity surveys) and will also feature new discoveries by space observatories (K2, GAIA, Cheops, TESS). Twinkle is a small satellite with a payload designed to perform high-quality astrophysical observations while adapting to the design of an existing Low Earth Orbit commercial satellite platform. The SSTL-300 bus, to be launched into a low- Earth sun-synchronous polar orbit by 2019, will carry a half-meter class telescope with two instruments (visible and near-IR spectrographs - between 0.4 and 4.5μm - with resolving power R~300 at the lower end of the wavelength scale) using mostly flight proven spacecraft systems designed by Surrey Satellite Technology Ltd and a combination of high TRL instrumentation and a few lower TRL elements built by a consortium of UK institutes. The Twinkle design will enable the observation of the chemical composition and weather of at least 100 exoplanets in the Milky Way, including super-Earths (rocky planets 1-10 times the mass of Earth), Neptunes, sub-Neptunes and gas giants like Jupiter. It will also allow the follow-up photometric observations of 1000+ exoplanets in the visible and infrared, as well as observations of Solar system objects, bright stars and disks.
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