GNOMOS: The Gemini NIR-Optical Multi Object Spectrograph

TL;DR

This paper advocates for a multi-object, medium-resolution spectrograph covering optical and near-infrared wavelengths for Gemini Observatory, emphasizing its potential to advance diverse astrophysical research without sacrificing scientific goals.

Contribution

It proposes an innovative multi-object spectrograph design covering optical and near-infrared wavelengths, expanding capabilities beyond single-object instruments.

Findings

Wide wavelength coverage enhances scientific versatility.

Moderate multiplexing balances throughput and observational efficiency.

The proposed design is feasible with current or near-future technology.

Abstract

This paper is a response to a call for white papers solicited by Gemini Observatory and its Science and Technology Advisory Committee, to help define the science case and requirements for a new Gemini instrument, envisaged to consist of a single-object spectrograph at medium resolution simultaneously covering optical and near-infrared wavelengths. In this white paper we discuss the science case for an alternative new instrument, consisting instead of a multi-object, medium-resolution, high-throughput spectrograph, covering simultaneously the optical and near-infrared slices of the electromagnetic spectrum. We argue that combination of wide wavelength coverage at medium resolution with moderate multiplexing power is an innovative path that will enable the pursuit of fundamental science questions in a variety of astrophysical topics, without compromise of the science goals achievable by single-object spectroscopy on a wide baseline. We present a brief qualitative discussion of the main features of a notional hardware design that could conceivably make such an instrument viable.