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High-resolution Infrared Spectrograph for Exoplanet Characterization with the Keck and Thirty Meter Telescopes

Mawet, Dimitri and Beichman, Charles and Jovanovic, Nemanja and Dekany, Richard and Hover, David and Blake, Geoffrey A. and Hillenbrand, Lynne and Howard, Andrew and Knutson, Heather and Ciardi, David (2019) High-resolution Infrared Spectrograph for Exoplanet Characterization with the Keck and Thirty Meter Telescopes. Astro2020 Science White Paper, . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20191121-110551588

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Abstract

HISPEC (High-resolution Infrared Spectrograph for Exoplanet Characterization) is a proposed diffraction-limited spectrograph for the W.M. Keck Observatory, and a pathfinder for the MODHIS facility project (Multi-Object Diffraction-limited High-resolution Infrared Spectrograph) on the Thirty Meter Telescope. HISPEC/MODHIS builds on diffraction-limited spectrograph designs which rely on adaptively corrected single-mode fiber feeds. Seeing-limited high-resolution spectrographs, by virtue of the conservation of beam etendue, grow in volume following a D^3 power law (D is the telescope diameter), and are subject to daunting challenges associated with their large size. Diffraction-limited spectrographs fed by single mode fibers are decoupled from the telescope input, and are orders of magnitude more compact and have intrinsically stable line spread functions. Their efficiency is directly proportional to the performance of the adaptive optics (AO) system. AO technologies have matured rapidly over the past two decades and are baselined for future extremely large telescopes. HISPEC/MODHIS will take R>100,000 spectra of a few objects in a 10" field-of-view sampled at the diffraction limit (~10-50 mas), simultaneously from 0.95 to 2.4 microns (y-K). The scientific scope ranges from exoplanet infrared precision radial velocities, spectroscopy of transiting, close-in, and directly imaged exoplanets (atmospheric composition and dynamics, RM effect, spin measurements, Doppler imaging), brown dwarf characterization, stellar physics/chemistry, proto-planetary disk kinematics/composition, Solar system, extragalactic science, and cosmology. HISPEC/MODHIS features a compact, cost-effective design optimized to fully exploit the existing Keck-AO and future TMT-NFIRAOS infrastructures and boost the scientific reach of Keck Observatory and TMT soon after first light.


Item Type:Report or Paper (White Paper)
Related URLs:
URLURL TypeDescription
https://arxiv.org/abs/1908.03623arXivDiscussion Paper
ORCID:
AuthorORCID
Mawet, Dimitri0000-0002-8895-4735
Beichman, Charles0000-0002-5627-5471
Blake, Geoffrey A.0000-0003-0787-1610
Howard, Andrew0000-0001-8638-0320
Knutson, Heather0000-0002-0822-3095
Ciardi, David0000-0002-5741-3047
Additional Information:Astro2020 APC White Paper: Optical and Infrared Observations from the Ground. 10 July 2019.
Group:Infrared Processing and Analysis Center (IPAC), Astronomy Department
Series Name:Astro2020 Science White Paper
Record Number:CaltechAUTHORS:20191121-110551588
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191121-110551588
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99985
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Nov 2019 20:37
Last Modified:21 Nov 2019 20:37

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