Fiber-fed high-resolution infrared spectroscopy at the diffraction limit with Keck-HISPEC and TMT-MODHIS: status update
Dimitri Mawet, Michael P. Fitzgerald, Quinn Konopacky, Nemanja Jovanović, Ashley Baker, Charles Beichman, Rob Bertz, Richard Dekany, Jason Fucik, Mitsuko Roberts, Michael Porter, Rishi Pahuja, Garreth Ruane, Stephanie Leifer, Samuel Halverson, Aidan Gibbs, Chris Johnson, Evan Kress, Kenneth Magnone, Ji Man Sohn, Eric W. Wang, Aaron Brown, Jérôme Maîre, Ben Sappey, David R. Andersen, Hiroshi Terada, Marc Kassis, Étienne Artigau, Björn Benneke, René Doyon, Takayuki Kotani, Motohide Tamura, Thomas G. Beatty, Peter Plavchan, Tuan Do, Shogo Nishiyama, Jason Wang, Ji Wang
Abstract
HISPEC (High-resolution Infrared Spectrograph for Exoplanet Characterization) is an infrared (0.95 to 2.46 microns) cross-dispersed, R=100,000 single-mode fiber-fed diffraction-limited echellette spectrograph for the Keck II telescope’s adaptive optics (AO) system. MODHIS (Multi-Objective Diffraction-limited High-resolution Infrared Spectrograph) shares similar specifications as HISPEC while being optimized for TMT’s first-light AO system NFIRAOS. Keck-HISPEC (2025) then TMT-MODHIS will provide increasingly compelling science capabilities from exoplanet atmosphere characterization through both transit and direct high-contrast spectroscopy, to detection and mass measurements through infrared precision radial velocity (RV). The science cases include the precise RV measurements of stars orbiting the Galactic Center, Solar System studies, and the chemodynamical history of nearby dwarf galaxies and the galactic halo.