LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC): the second release of value-added catalogues

Abstract

We present the second release of value-added catalogues of the LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC DR2). The catalogues present values of radial velocity $V_{\mathrm{r}}$, atmospheric parameters --- effective temperature $T_{\mathrm{eff}}$, surface gravity log$g$, metallicity [Fe/H], $\alpha$-element to iron (metal) abundance ratio [$\alpha$/Fe] ([$\alpha$/M]), elemental abundances [C/H] and [N/H], and absolute magnitudes ${\mathrm{M}}_V$ and ${\mathrm{M}}_{K_{\mathrm{s}}}$ deduced from 1.8 million spectra of 1.4 million unique stars targeted by the LSS-GAC since September 2011 until June 2014. The catalogues also give values of interstellar reddening, distance and orbital parameters determined with a variety of techniques, as well as proper motions and multi-band photometry from the far-UV to the mid-IR collected from the literature and various surveys. Accuracies of radial velocities reach 5kms${}^{-1}$ for late-type stars, and those of distance estimates range between 10 -- 30 per cent, depending on the spectral signal-to-noise ratios. Precisions of [Fe/H], [C/H] and [N/H] estimates reach 0.1dex, and those of [$\alpha$/Fe] and [$\alpha$/M] reach 0.05dex. The large number of stars, the contiguous sky coverage, the simple yet non-trivial target selection function and the robust estimates of stellar radial velocities and atmospheric parameters, distances and elemental abundances, make the catalogues a valuable data set to study the structure and evolution of the Galaxy, especially the solar-neighbourhood and the outer disk.

arXiv comment27 pages, 20 figures, accepted by MNRAS

References in corpus (16)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• MILES: A Medium resolution INT Library of Empirical Spectra
• Astrophysics Source Code Library
• The First Data Release (DR1) of the LAMOST general survey
• LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
• Empirical extinction coefficients for the GALEX, SDSS, 2MASS and WISE passbands
• Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters
• The LAMOST Stellar Parameter Pipeline at Peking University --- LSP3
• LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC): target selection and the first release of value-added catalogues
• Estimating stellar atmospheric parameters, absolute magnitudes and elemental abundances from the LAMOST spectra with Kernel-based Principal Component Analysis
• Empirical metallicity-dependent calibrations of effective temperature against colours for dwarfs and giants based on interferometric data
• Determination of the Local Standard of Rest using the LSS-GAC DR1
• A three dimensional extinction map of the Galactic Anticentre from multi-band photometry
• Probing the Galaxy's bars via the Hercules stream
• DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate
• Relative Flux Calibration of the LAMOST Spectroscopic Survey of the Galactic Anti-center

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