A fiber injection unit for the Keck Planet Imager and Characterizer (KPIC)
| Autor: | D. Mawet, Yeyuan Xin, James K. Wallace, Jacques-Robert Delorme, Nemanja Jovanovic, Scott Lilley, Nikita Klimovich, Garreth Ruane, Peter Wizinowich, Michael P. Fitzgerald, Randy Bartos, Ji Wang |
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| Přispěvatelé: | Shaklan, Stuart |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Spatial filter business.industry Infrared Astrophysics::Instrumentation and Methods for Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Exoplanet Spectral line symbols.namesake Optics Planet 0103 physical sciences symbols Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics business Adaptive optics 010303 astronomy & astrophysics Doppler effect Spectrograph Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences |
| Popis: | Coupling a high-contrast imaging instrument to a high-resolution spectrograph has the potential to enable the most detailed characterization of exoplanet atmospheres, including spin measurements and Doppler mapping. The high-contrast imaging system serves as a spatial filter to separate the light from the star and the planet while the high-resolution spectrograph acts as a spectral filter, which differentiates between features in the stellar and planetary spectra. The Keck Planet Imager and Characterizer (KPIC) located downstream from the current W. M. Keck II adaptive optics (AO) system will contain a fiber injection unit (FIU) combining a high-contrast imaging system and a fiber feed to Keck’s high resolution infrared spectrograph NIRSPEC. Resolved thermal emission from known young giant exoplanets will be injected into a single-mode fiber linked to NIRSPEC, thereby allowing the spectral characterization of their atmospheres. Moreover, the resolution of NIRSPEC (R = 37,500) is high enough to enable spin measurements and Doppler imaging of atmospheric weather phenomenon. The module will be integrated and tested at Caltech before being transferred to Keck in 2018. |
| Databáze: | OpenAIRE |
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