The GALAH survey: observational overview and Gaia DR1 companion

S. L. Martell, S. Buder, L. Duong, K. J. Schlesinger, J. Simpson, K. Lind, M. Ness, J. P. Marshall, M. Asplund, J. Bland-Hawthorn, A. R. Casey, G. De Silva, K. C. Freeman, J. Kos, J. Lin, D. B. Zucker, T. Zwitter, B. Anguiano, C. Bacigalupo, D. Carollo & 13 others L. Casagrande, G. S. Da Costa, J. Horner, D. Huber, E. A. Hyde, P. R. Kafle, G. F. Lewis, D. Nataf, C. A. Navin, D. Stello, C. G. Tinney, F. G. Watson, R. Wittenmyer

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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 ≃ 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.
Original languageEnglish
Pages (from-to)3203-3219
JournalMonthly Notices of the Royal Astronomical Society
Volume465
Issue number3
DOIs
Publication statusPublished - 1 Mar 2017

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archaeology
spectrographs
catalogs
merger
halos
histories
telescopes
color
stars
high resolution
history
chemical

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Martell, S. L., Buder, S., Duong, L., Schlesinger, K. J., Simpson, J., Lind, K., ... Wittenmyer, R. (2017). The GALAH survey: observational overview and Gaia DR1 companion. Monthly Notices of the Royal Astronomical Society, 465(3), 3203-3219. https://doi.org/10.1093/mnras/stw2835
Martell, S. L. ; Buder, S. ; Duong, L. ; Schlesinger, K. J. ; Simpson, J. ; Lind, K. ; Ness, M. ; Marshall, J. P. ; Asplund, M. ; Bland-Hawthorn, J. ; Casey, A. R. ; De Silva, G. ; Freeman, K. C. ; Kos, J. ; Lin, J. ; Zucker, D. B. ; Zwitter, T. ; Anguiano, B. ; Bacigalupo, C. ; Carollo, D. ; Casagrande, L. ; Da Costa, G. S. ; Horner, J. ; Huber, D. ; Hyde, E. A. ; Kafle, P. R. ; Lewis, G. F. ; Nataf, D. ; Navin, C. A. ; Stello, D. ; Tinney, C. G. ; Watson, F. G. ; Wittenmyer, R. / The GALAH survey: observational overview and Gaia DR1 companion. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 465, No. 3. pp. 3203-3219.
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Martell, SL, Buder, S, Duong, L, Schlesinger, KJ, Simpson, J, Lind, K, Ness, M, Marshall, JP, Asplund, M, Bland-Hawthorn, J, Casey, AR, De Silva, G, Freeman, KC, Kos, J, Lin, J, Zucker, DB, Zwitter, T, Anguiano, B, Bacigalupo, C, Carollo, D, Casagrande, L, Da Costa, GS, Horner, J, Huber, D, Hyde, EA, Kafle, PR, Lewis, GF, Nataf, D, Navin, CA, Stello, D, Tinney, CG, Watson, FG & Wittenmyer, R 2017, 'The GALAH survey: observational overview and Gaia DR1 companion' Monthly Notices of the Royal Astronomical Society, vol. 465, no. 3, pp. 3203-3219. https://doi.org/10.1093/mnras/stw2835

The GALAH survey: observational overview and Gaia DR1 companion. / Martell, S. L.; Buder, S.; Duong, L.; Schlesinger, K. J.; Simpson, J.; Lind, K.; Ness, M.; Marshall, J. P.; Asplund, M.; Bland-Hawthorn, J.; Casey, A. R.; De Silva, G.; Freeman, K. C.; Kos, J.; Lin, J.; Zucker, D. B.; Zwitter, T.; Anguiano, B.; Bacigalupo, C.; Carollo, D.; Casagrande, L.; Da Costa, G. S.; Horner, J.; Huber, D.; Hyde, E. A.; Kafle, P. R.; Lewis, G. F.; Nataf, D.; Navin, C. A.; Stello, D.; Tinney, C. G.; Watson, F. G.; Wittenmyer, R.

In: Monthly Notices of the Royal Astronomical Society, Vol. 465, No. 3, 01.03.2017, p. 3203-3219.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The GALAH survey: observational overview and Gaia DR1 companion

AU - Martell, S. L.

AU - Buder, S.

AU - Duong, L.

AU - Schlesinger, K. J.

AU - Simpson, J.

AU - Lind, K.

AU - Ness, M.

AU - Marshall, J. P.

AU - Asplund, M.

AU - Bland-Hawthorn, J.

AU - Casey, A. R.

AU - De Silva, G.

AU - Freeman, K. C.

AU - Kos, J.

AU - Lin, J.

AU - Zucker, D. B.

AU - Zwitter, T.

AU - Anguiano, B.

AU - Bacigalupo, C.

AU - Carollo, D.

AU - Casagrande, L.

AU - Da Costa, G. S.

AU - Horner, J.

AU - Huber, D.

AU - Hyde, E. A.

AU - Kafle, P. R.

AU - Lewis, G. F.

AU - Nataf, D.

AU - Navin, C. A.

AU - Stello, D.

AU - Tinney, C. G.

AU - Watson, F. G.

AU - Wittenmyer, R.

PY - 2017/3/1

Y1 - 2017/3/1

N2 - 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 ≃ 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 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 ≃ 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 - stars: abundances

KW - Galaxy: disc

KW - Galaxy: evolution

KW - Galaxy: formation

KW - Galaxy: stellar content

U2 - 10.1093/mnras/stw2835

DO - 10.1093/mnras/stw2835

M3 - Article

VL - 465

SP - 3203

EP - 3219

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -

Martell SL, Buder S, Duong L, Schlesinger KJ, Simpson J, Lind K et al. The GALAH survey: observational overview and Gaia DR1 companion. Monthly Notices of the Royal Astronomical Society. 2017 Mar 1;465(3):3203-3219. https://doi.org/10.1093/mnras/stw2835