The GALAH survey: scientific motivation
Article
Article Title | The GALAH survey: scientific motivation |
---|---|
ERA Journal ID | 1074 |
Article Category | Article |
Authors | de Silva, G. M. (Author), Freeman, K. C. (Author), Bland-Hawthorn, J. (Author), Martell, S. (Author), Wylie de Boer, E. (Author), Asplund, M. (Author), Keller, S. (Author), Sharma, S. (Author), Zucker, D. B. (Author), Zwitter, T. (Author), Anguiano, B. (Author), Lewis, G. F. (Author), Stello, D. (Author), Bayliss, D. (Author), Casagrande, L. (Author), Da Costa, G. (Author), Cannon, R. (Author), Duong, L. (Author), Ireland, M. J. (Author), Lin, J. (Author), Nataf, D. M. (Author), Schlesinger, K. J. (Author), Yong, D. (Author), O'Toole, S. (Author), Dotter, A. (Author), Watson, F. (Author), Bergemann, M. (Author), Bacigalupo, C. (Author), Carollo, D. (Author), D'Orazi, V. (Author), Parker, Q. (Author), Reid, W. (Author), Simpson, J. D. (Author), Kos, J. (Author), Traven, G. (Author), Zerjal, M. (Author), Beavis, M. A. (Author), Sheinis, A. (Author), Campbell, S. (Author), Heger, A. (Author), Lattanzio, J. (Author), Casey, A. R. (Author), Kafle, P. R. (Author), Lind, K. (Author), Wittenmyer, R. (Author), Ting, Y. S. (Author) and Munari, U. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 449 (3), pp. 2604-2617 |
Number of Pages | 14 |
Year | 2015 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stv327 |
Web Address (URL) | https://academic.oup.com/mnras/article/449/3/2604/1109084 |
Abstract | The Galactic Archaeology with HERMES (GALAH) survey is a large high-resolution spectroscopic survey using the newly commissioned High Efficiency and Resolution Multi-Element Spectrograph (HERMES) on the Anglo-Australian Telescope. The HERMES spectrograph provides high-resolution (R ~ 28 000) spectra in four passbands for 392 stars simultaneously over a 2 deg field of view. The goal of the survey is to unravel the formation and evolutionary history of the Milky Way, using fossil remnants of ancient star formation events which have been disrupted and are now dispersed throughout the Galaxy. Chemical tagging seeks to identify such dispersed remnants solely from their common and unique chemical signatures; these groups are unidentifiable from their spatial, photometric or kinematic properties. To carry out chemical tagging, the GALAH survey will acquire spectra for a million stars down to V ~ 14. The HERMES spectra of FGK stars contain absorption lines from 29 elements including light proton-capture elements, α-elements, odd-Z elements, iron-peak elements and n-capture elements from the light and heavy s-process and the r-process. This paper describes the motivation and planned execution of the GALAH survey, and presents some results on the first-light performance of HERMES. |
Keywords | galaxy; stellar content; |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 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 | Australian Astronomical Observatory, Australia |
University of Sydney | |
University of New South Wales | |
Australian National University | |
Macquarie University | |
University of Ljubljana, Slovenia | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Max Planck Society, Germany | |
ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions, Australia | |
National Institute for Astrophysics, Italy | |
Lund Observatory, Sweden | |
University of Southern Queensland | |
Monash University | |
University of Western Australia | |
INAF - Astronomical Observatory of Padova, Italy |
https://research.usq.edu.au/item/q41qz/the-galah-survey-scientific-motivation
Download files
1255
total views122
total downloads5
views this month0
downloads this month