J/MNRAS/465/3203 GALAH observational overview (Martell+, 2017)
The GALAH Survey: Observational overview and Gaia DR1 companion.
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.
<Mon. Not. R. Astron. Soc. 465, 3203 (2017)>
=2017MNRAS.465.3203M 2017MNRAS.465.3203M (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Milky Way ; Stars, nearby ; Stars, bright ;
Abundances, [Fe/H] ; Effective temperatures ; Radial velocities ;
Reddening ; Stars, distances
Keywords: stars: abundances - Galaxy: disc - Galaxy: evolution -
Galaxy: formation - Galaxy: stellar content
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 (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.
Description:
Identifiers, positions, derived stellar parameters, radial velocities,
distance moduli and reddenings for stars from the Tycho-2 catalogue
observed by the GALAH Survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 131 10680 Identifiers and quantities derived from GALAH
Survey data for stars from Tycho-2
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See also:
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)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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3- 9 I7 --- GALAH GALAH Survey ID number
13- 24 A12 --- TYC2 Tycho-2 ID number (NNNN-NNNNN-N)
28- 44 A17 --- 2MASS 2MASS ID number (JHHMMSSss+DDMMSSs)
48- 58 F11.7 deg RAdeg Right ascension (J2000.0)
62- 72 F11.7 deg DEdeg Declination (J2000.0)
76- 79 I4 K Teff Effective temperature
83- 86 F4.2 cm/s2 logg Surface gravity
90- 94 F5.2 Sun [Fe/H] Metallicity
98-102 F5.2 Sun [alpha/Fe] alpha enhancement
106-113 F8.3 km/s RV Radial velocity
117-122 F6.3 mag (m-M)V ?=99.999 V-band distance modulus
126-131 F6.3 mag E(B-V) ?=99.999 Reddening
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Acknowledgements:
Sarah Martell, s.martell(at)unsw.edu.au
(End) Sarah Martell [UNSW, Australia], Patricia Vannier [CDS] 08-Sep-2016