TY - JOUR
T1 - The GALAH survey
T2 - Observational overview and Gaia DR1 companion
AU - Martell, Sarah L
AU - Sharma, Sanjib
AU - Buder, S.
AU - Duong, Ly
AU - Schlesinger, Katharine J
AU - Simpson, J.
AU - Lind, Karin
AU - Ness, Melissa
AU - Marshall, J. P.
AU - Asplund, Martin
AU - Bland-Hawthorn, Joss
AU - Casey, A. R.
AU - De Silva, G.
AU - Freeman, K. C.
AU - Kos, Janez
AU - Lin, J.
AU - Zucker, Daniel Benjamin
AU - Zwitter, Tomaz
AU - Anguiano, Borja
AU - Bacigalupo, Carlos
AU - Carollo, Daniela
AU - Casagrande, Luca
AU - Da Costa, Gary Stewart
AU - Horner, Jonathan
AU - Huber, D R
AU - Hyde, E. A.
AU - Kafle, Prajwal R
AU - Lewis, G. F.
AU - Nataf, David M
AU - Navin, C. A.
AU - Stello, Dennis
AU - Tinney, C. G.
AU - Watson, Fred G
AU - Wittenmyer, Robert
PY - 2017
Y1 - 2017
N2 - 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 ≃ 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 (Teff, log(g), [Fe/H], [α/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.
AB - 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 ≃ 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 (Teff, log(g), [Fe/H], [α/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.
KW - Galaxy: disc
KW - Galaxy: evolution
KW - Galaxy: formation
KW - Galaxy: stellar content
KW - Stars: abundances
UR - https://www.scopus.com/pages/publications/85012089683
U2 - 10.1093/mnras/stw2835
DO - 10.1093/mnras/stw2835
M3 - Article
AN - SCOPUS:85012089683
SN - 0035-8711
VL - 465
SP - 3203
EP - 3219
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -