GALAH observational overview J/MNRAS/465/3203 ivo://CDS.VizieR/J/MNRAS/465/3203 doi:10.26093/cds/vizier.74653203 CDS Martell S.L. Sharma S. 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. 2024-08-16T20:20:08Z 2017-02-16T07:44:33Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr surveys milky-way-galaxy metallicity effective-temperature radial-velocity interstellar-reddening stellar-distance 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 (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 3kpc and giants at 1 to 10kpc. 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. 2017MNRAS.465.3203M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/465/3203 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/337 : Gaia DR1 (Gaia Collaboration, 2016) I/259 : The Tycho-2 Catalogue (Hog+ 2000) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/465/3203 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/465/3203 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/465/3203 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/465/3203 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/465/3203 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/465/3203 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/465/3203/catalog (Identifiers and quantities derived from GALAH Survey data for stars from Tycho-2) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/465/3203/catalog? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/465/3203/catalog? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/465/3203/catalog? 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Should Not be used for identification. meta.record int GALAH GALAH Survey ID number meta.id;meta.main int TYC2 Tycho-2 ID number (NNNN-NNNNN-N) meta.id char 2MASS 2MASS ID number (JHHMMSSss+DDMMSSs) meta.id char RAJ2000 Right ascension (J2000.0) deg pos.eq.ra;meta.main indexed DEJ2000 Declination (J2000.0) deg pos.eq.dec;meta.main indexed Teff Effective temperature K phys.temperature.effective int logg Surface gravity cm.s**-2 phys.gravity float [Fe/H] Metallicity Sun phys.abund.Z float [alpha/Fe] alpha enhancement Sun phys.abund float RV Radial velocity km/s phys.veloc;pos.heliocentric double (m-M)V ? V-band distance modulus mag phot.mag.distMod float nullable E(B-V) ? Reddening mag phot.color.excess float nullable