The GALAH survey: observational overview and Gaia DR1 companion
Article
Article Title | The GALAH survey: observational overview and Gaia DR1 companion |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Martell, S. L. (Author), Sharma, S. (Author), Buder, S. (Author), Duong, L. (Author), Schlesinger, K. J. (Author), Simpson, J. (Author), Lind, K. (Author), Ness, M. (Author), Marshall, J. P. (Author), Asplund, M. (Author), Bland-Hawthorn, J. (Author), Casey, A. R. (Author), de Silva, G. (Author), Freeman, K. C. (Author), Kos, J. (Author), Lin, J. (Author), Zucker, D. B. (Author), Zwitter, T. (Author), Anguiano, B. (Author), Bacigalupo, C. (Author), Carollo, D. (Author), Casagrande, L. (Author), Da Costa, G. S. (Author), Horner, J. (Author), Huber, D. (Author), Hyde, E. A. (Author), Kafle, P. R. (Author), Lewis, G. F. (Author), Nataf, D. (Author), Navin, C. A. (Author), Stello, D. (Author), Tinney, C. G. (Author), Watson, F. G. (Author) and Wittenmyer, R. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 465 (3), pp. 3203-3219 |
Number of Pages | 17 |
Year | 2017 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stw2835 |
Web Address (URL) | https://academic.oup.com/mnras/article/465/3/3203/2417060 |
Abstract | The Galactic Archaeology with HERMES (GALAH) Survey is a massive observational project to trace the Milky Way's history of star formation, chemical enrichment, stellar migration and minor mergers. Using high-resolution (R$\simeq$28,000) spectra taken with the High Efficiency and Resolution Multi-Element Spectrograph (HERMES) instrument at the Anglo-Australian Telescope (AAT), 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 to 3 kpc and giants at 1 to 10 kpc. This enables a thorough local chemical inventory of the Galactic thin and thick disks, 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 (Teff, log(g), [Fe/H], [alpha/Fe]), radial velocity, distance modulus and reddening for 10680 observations of 9860 Tycho-2 stars that may be included in the first Gaia data release. |
Keywords | stars; abundances; galaxy; formation; evolution; stellar content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
510104. Galactic astronomy | |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | University of New South Wales |
University of Sydney | |
Max Planck Society, Germany | |
Australian National University | |
Australian Astronomical Observatory, Australia | |
University of Cambridge, United Kingdom | |
Macquarie University | |
University of Ljubljana, Slovenia | |
University of Notre Dame, United States | |
Computational Engineering and Science Research Centre | |
University of Western Australia |
https://research.usq.edu.au/item/q3v93/the-galah-survey-observational-overview-and-gaia-dr1-companion
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