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Thomas Bensby. Profile photo.

Thomas Bensby

Senior lecturer

Thomas Bensby. Profile photo.

ANDES, the high resolution spectrograph for the ELT: science goals, project overview and future developments

Author

  • A. Marconi
  • T. Bensby
  • H.J. Hoeijmakers
  • J. Zimara

Summary, in English

The first generation of ELT instruments includes an optical-infrared high resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph).ANDES consists of three fibre-fed spectrographs ([U]BV, RIZ, YJH) providing a spectral resolution of ∼100,000 with a minimum simultaneous wavelength coverage of 0.4-1.8 µm with the goal of extending it to 0.35-2.4 µm with the addition of an U arm to the BV spectrograph and a separate K band spectrograph.It operates both in seeing- and diffraction-limited conditions and the fibre-feeding allows several, interchangeable observing modes including a single conjugated adaptive optics module and a small diffraction-limited integral field unit in the NIR.Modularity and fibre-feeding allows ANDES to be placed partly on the ELT Nasmyth platform and partly in the Coudé room.ANDES has a wide range of groundbreaking science cases spanning nearly all areas of research in astrophysics and even fundamental physics.Among the top science cases there are the detection of biosignatures from exoplanet atmospheres, finding the fingerprints of the first generation of stars, tests on the stability of Nature's fundamental couplings, and the direct detection of the cosmic acceleration.The ANDES project is carried forward by a large international consortium, composed of 35 Institutes from 13 countries, forming a team of almost 300 scientists and engineers which include the majority of the scientific and technical expertise in the field that can be found in ESO member states. © 2024 SPIE.

Department/s

  • Astrophysics

Publishing year

2024

Language

English

Document type

Conference paper

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • cosmology
  • exoplanets
  • extremely large telescopes
  • fundamental physics
  • ground-based instruments
  • high resolution spectrographs
  • infrared spectrographs
  • physics and evolution of galaxies
  • physics and evolution of stars
  • stars and planets formation

Status

Published