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The Gemini Infra-Red Multi-Object Spectrograph (GIRMOS), and Massive Galaxy Protoclusters in the Early Universe


Scott Chapman


Dalhousie



I will first describe the Gemini Infra-Red Multi-Object Spectrograph (GIRMOS): a four-arm, Multi-Object Adaptive Optics (MOAO) IFU spectrograph being built for Gemini (commissioning ~2025). GIRMOS is being planned to interface with the new Gemini-North AO (GNAO) system. I present a design and forecast the error budget and performance of GIRMOS. The MOAO system will patrol the 2' field of regard of GNAO, utilizing closed loop GLAO for low order correction. GIRMOS will perform tomographic reconstruction of the turbulence using the GNAO WFS, and utilize order ~17x17 actuator DMs operating in open loop to perform higher order residual correction. I will discuss the experimental development phases currently underway to optimize the open loop performance and prototype the GIRMOS MOAO arms in a realistic end-to-end operation that will fully demonstrate the working GNAO+MOAO system. The MOAO is base lined to yield diffraction limited performance with a goal of 50% EE within a 0.1” spaxel at H-band. GIRMOS will carry out large surveys, and perform scientific follow-up for JWST, but will also act as a Thirty-Meter Telescope (TMT) pathfinder, where a similar open-loop MOAO system is crucial for the success of multiplexed instruments. GIRMOS will lay the scientific and technical ground-work for developing a second generation instrument for TMT. GIRMOS will have the broadest impact in the study of the formation and evolution of galaxies, but will also have broad reach in fields such as star and planet formation within our Milky Way and supermassive black holes in nearby galaxies.

Date: Jeudi, le 13 février 2020
Heure: 11:30
Lieu: Université de Montréal
  A-2553 - Campus MIL
Contact: René Doyon
 

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