[P-AE17] Exoplanets

[PAE17-P09] Japanese contribution to development of Ariel

*Keigo Enya¹, Masahiro Ikoma², Norio Narita³, Akihiko Fukui³, Shingo Kameda⁴, Go Murakami¹, Yuichi Ito², Yui Kawashima⁵, Yuka Fujii² (1.ISAS, 2.NAOJ, 3.The University of Tokyo, 4.Rikkyo University, 5.Riken)

Keywords:

Ariel,exoplanet,transit,AIRS,CaF2 optical device,ESA

Ariel (Atmospheric Remote-sensing Infrared Exoplanet Large-survey) is an ESA-led space telescope project dedicated for exoplanet spectroscopic transit observations. Ariel has been selected for ESA / M4 (2020) and its launch is scheduled for 2029. Ariel is expected to be an important milestone in exoplanet observations. The Japanese team are working to participate Arierl as a Co-PI country (chair of Ariel-J WG: Masahiro Ikoma). For that purpose, contribution to development is required. Based on technical heritages in Japan, the Japanese team are in charge of developing calcium fluoride (CaF2) optical devices: lenses, prisms, wideband infrared anti-reflection coating, and the qualification test. These products will be used in AIRS (infrared spectrometer, development is led by France team).