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Description
The Infrared Doppler (IRD) instrument is a fiber-fed high-resolution near-infrared spectrometer for the Subaru 8.2-m telescope covering the Y-, J-, and H-bands simultaneously with a spectral resolution of ~70,000. It aims at achieving measurement precision of 1-2 m/s in radial velocity (RV) with a very stable spectrograph and an original laser frequency comb. The most effective astronomical targets of IRD are M dwarfs, especially late-M dwarfs, which are too faint to observe at optical wavelengths even with such a large telescope. IRD's commissioning at the summit started in March 2017 and first light observations were successfully carried out in August 2017. A Subaru Strategic Program (SSP) survey has started from 2019A. We report the current status of the instrument and the planned survey.
