Science drivers and requirements for an Advanced Technology Large Aperture Space Telescope (ATLAST): Implications for technology development and synergies with other future facilities

TL;DR

The paper discusses the science goals, technical requirements, and technological development needs for ATLAST, a proposed large-aperture space telescope aimed at answering fundamental astrophysical questions, including the search for extraterrestrial life.

Contribution

It defines the key science drivers, performance requirements, and explores synergies with future facilities for the ATLAST concept, guiding technology development and mission planning.

Findings

ATLAST requires 8-16 milliarcsec resolution and 45 m² collecting area.

High sensitivity across 0.1-2.4 μm wavelengths is essential.

Synergies with TMT, EELT, and ALMA enhance scientific potential.

Abstract

The Advanced Technology Large-Aperture Space Telescope (ATLAST) is a concept for an 8-meter to 16-meter UVOIR space observatory for launch in the 2025-2030 era. ATLAST will allow astronomers to answer fundamental questions at the forefront of modern astronphysics, including "Is there life elsewhere in the Galaxy?" We present a range of science drivers that define the main performance requirements for ATLAST (8 to 16 milliarcsec angular resolution, diffraction limited imaging at 0.5 {\mu}m wavelength, minimum collecting area of 45 square meters, high sensitivity to light wavelengths from 0.1 {\mu}m to 2.4 {\mu}m, high stability in wavefront sensing and control). We will also discuss the synergy between ATLAST and other anticipated future facilities (e.g., TMT, EELT, ALMA) and the priorities for technology development that will enable the construction for a cost that is comparable to current generation observatory-class space missions.