The GALAH survey: observational overview and Gaia DR1 companion

By S. Martell, Sanjib Sharma, S. Buder, L. Duong, K. Schlesinger, J. Simpson, K. Lind, M. Ness, J. Marshall, Martin Asplund and 23 more. 2016

150 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f324a2ed2fda54bc899c5afafbb48919d9e7ad05

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Citations in the corpus

A Gaia DR2 view of the open cluster population in the Milky Way (2018, background): “The observational campaigns of the GaiaESO Survey (Gilmore et al. 2012), APOGEE (Frinchaboy et al. 2013), or GALAH (Martell et al. 2017) have OC stars among their targets, but less than 5% of the currently known OCs have been studied through means of high-resolution spectroscopy.”
Target Selection for the SDSS-IV APOGEE-2 Survey (2017, result): “This is exemplified by recent results from the APOKASC (Tayar et al. 2017) and CoRoGEE (Anders et al. 2017) samples, and a plethora of additional opportunities lie with optical spectroscopic surveys such as GALAH (Martell et al. 2017) and GES (Gilmore et al. 2012).”
The biggest splash (2019, background): “…(Steinmetz et al. 2006) DR5 (Kunder et al. 2017), Gaia-ESO DR3 (Gilmore et al. 2012), GALAH (GALactic Archaeology with HERMES, De Silva et al. 2015; Martell et al. 2017) DR2 (Buder et al. 2018), and SEGUE (Sloan Extension for Galactic Understanding and Exploration, Yanny et al. 2009) surveys is…”
PLATO as it is: a legacy mission for Galactic archaeology (2017, unknown): “…et al. 2015; Majewski, APOGEE Team, & APOGEE-2016), Gaia-ESO (Gilmore et al. 2012), LAM-OST (Cui et al. 2012), GALAH (De Silva et al. 2015; Martell et al. 2017), WEAVE (Dalton et al. 2014), 4MOST (de Jong et al. 2014), DESI (DESI Collaboration et al. 2016a, 2016b), and MOONS (Cirasuolo et…”
Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18 (2019, background): “In fact, to remove systematics with respect to the temperature scale defined by the infra-red flux method (González Hernández & Bonifacio 2009), for DR14 and following releases a metallicity- and temperature dependent calibration was applied to the raw ASPCAP results (Holtzman et al. 2018; Jönsson e”
The GALAH Survey: Second Data Release (2018, methodology): “The Galactic Archaeology with HERMES (GALAH) survey1 brings a unique perspective to the outstanding problem of understanding the Galaxy’s history (De Silva et al. 2015; Martell et al. 2017).”
StarHorse : a Bayesian tool for determining stellar masses, ages, distances, and extinctions for field stars (2017, methodology): “…(APOGEE, Majewski et al. 2017), the RAdial Velocity Experiment (RAVE; Steinmetz et al. 2006), the Galactic Archaeology with HERMES survey (GALAH; Martell et al. 2017), the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE, Deng et al. 2012), and the Gaia ESO Survey (GES;…”
The vertical metallicity gradients of mono-age stellar populations in the Milky Way with the RAVE and Gaia data (2017, background): “…(SDSS-III/APOGEE; Eisenstein et al. 2011; Majewski et al. 2015), Gaia-ESO (Gilmore et al. 2012), the GALactic Archaeology with HERMES (GALAH; Martell et al. 2017), the 4-metre Multi-Object Spectroscopic Telescope (4MOST; de Jong et al. 2012) and the WHT Enhanced Area Velocity Explorer…”
The GALAH survey and Gaia DR2: dissecting the stellar disc’s phase space by age, action, chemistry, and location (2018, background): “This survey brings a unique perspective to Galactic archaeology by measuring accurate radial velocities and up to 30 elemental abundances for about a million stars (De Silva et al. 2015; Martell et al. 2017).”