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Velocity and abundance precisions for future high-resolution spectroscopic surveys: a study for 4MOST

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  • E. Caffau
  • L. Sbordone
  • P. Sartoretti
  • F. Royer
  • N. Leclerc
  • P. Bonifacio
  • N. Christlieb
  • H. G. Ludwig
  • E. K. Grebel
  • R. S. de Jong
  • C. Chiappini
  • J. Walcher
  • S. Mignot
  • S. Feltzing
  • M. Cohen
  • I. Minchev
  • A. Helmi
  • T. Piffl
  • E. Depagne
  • O. Schnurr
<mark>Journal publication date</mark>1/03/2013
<mark>Journal</mark>Astronomical Notes / Astronomische Nachrichten
Issue number3
Number of pages20
Pages (from-to)197-216
Publication StatusPublished
<mark>Original language</mark>English


In preparation for future, large-scale, multi-object, high-resolution spectroscopic surveys of the Galaxy, we present a series of tests of the precision in radial velocity and chemical abundances that any such project can achieve at a 4m class telescope. We briefly discuss a number of science cases that aim at studying the chemo-dynamical history of the major Galactic components (bulge, thin and thick disks, and halo) - either as a follow-up to the Gaia mission or on their own merits. Based on a large grid of synthetic spectra that cover the full range in stellar parameters of typical survey targets, we devise an optimal wavelength range and argue for a moderately high-resolution spectrograph. As a result, the kinematic precision is not limited by any of these factors, but will practically only suffer from systematic effects, easily reaching uncertainties

Bibliographic note

20 pages, 5 figures, accepted for publication in Astronomische Nachrichten