Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 465, Issue 3, Pages 3203-3219Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw2835
Keywords
stars: abundances; Galaxy: disc; Galaxy: evolution; Galaxy: formation; Galaxy: stellar content
Categories
Funding
- Australian Research Council [DE140100598, FT110100743]
- UNSW Vice-Chancellor's Research Fellowship
- Alexander von Humboldt Foundation
- Swedish Research Council [2015-00415_3]
- Marie Sklodowska Curie Actions [INCA 600398]
- European Union FP7 programme through ERG [320360]
- Gaia Multilateral Agreement
- Direct For Mathematical & Physical Scien
- Division Of Physics [1430152] Funding Source: National Science Foundation
- Vinnova [2015-00415] Funding Source: Vinnova
- Swedish Research Council [2015-00415] Funding Source: Swedish Research Council
- Australian Research Council [DE140100598, FT110100743] Funding Source: Australian Research Council
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The Galactic Archaeology with HERMES (GALAH) survey is amassive observational project to trace the MilkyWay's history of star formation, chemical enrichment, stellar migration and minor mergers. Using high-resolution (R similar or equal to 28 000) spectra, taken with the High Efficiency and Resolution Multi- Element Spectrograph (HERMES) instrument at the Anglo-Australian Telescope, GALAH will determine stellar parameters and abundances of up to 29 elements for up to one million stars. Selecting targets from a colour-unbiased catalogue built from 2MASS, APASS and UCAC4 data, we expect to observe dwarfs at 0.3-3 kpc and giants at 1-10 kpc. This enables a thorough local chemical inventory of the Galactic thin and thick discs, and also captures smaller samples of the bulge and halo. In this paper, we present the plan, process and progress as of early 2016 for GALAH survey observations. In our first two years of survey observing we have accumulated the largest high-quality spectroscopic data set at this resolution, over 200 000 stars. We also present the first public GALAH data catalogue: stellar parameters (T-eff, log(g), [ Fe/ H], [ alpha/ Fe]), radial velocity, distance modulus and reddening for 10 680 observations of 9860 Tycho-2 stars, 7894 of which are included in the first Gaia data release.
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