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LSS-GAC - A LAMOST Spectroscopic Survey of the Galactic Anti-center
Astrophysics of Galaxies · Submitted 23 Jun 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Together with Gaia which will provide accurate distances and tangential velocities for a billion stars, the LSS-GAC will yield a unique dataset to study the stellar populations, chemical composition, kinematics and structure of the disks and their interface with the halo, identify streams of debris of tidally disrupted dwarf galaxies and clusters, probe the gravitational potential and dark matter distribution, map the 3D distribution of interstellar dust extinction, search for rare objects (e.g. extremely metal-poor or hyper-velocity stars), and ultimately advance our understanding of the assemblage of the Milky Way and other galaxies and the origin of regularity and diversity of their properties. ... (abridged)
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The abstract, sentence by sentence
As a major component of the LAMOST Galactic surveys, the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC) will survey a significant volume of the Galactic thin/thick disks and halo in a contiguous sky area of ~ 3,400sq.deg., centered on the Galactic anti-center (|b| <= 30{\deg}, 150 <= l <= 210{\deg}), and obtain \lambda\lambda 3800--9000 low resolution (R ~ 1,800) spectra for a statistically complete sample of >= 3M stars of all colors, uniformly and randomly selected from (r, g - r) and (r, r - i) Hess diagrams obtained from a CCD imaging photometric survey of ~ 5,400sq.deg. with the Xuyi 1.04/1.20 m Schmidt Telescope, ranging from r = 14.0 to a limiting magnitude of r = 17.8 (18.5 for limited fields). The survey will deliver spectral classification, radial velocity Vr and stellar parameters (effective temperature Teff, surface gravity log g and metallicity [Fe/H]) for millions of Galactic stars. Together with Gaia which will provide accurate distances and tangential velocities for a billion stars, the LSS-GAC will yield a unique dataset to study the stellar populations, chemical composition, kinematics and structure of the disks and their interface with the halo, identify streams of debris of tidally disrupted dwarf galaxies and clusters, probe the gravitational potential and dark matter distribution, map the 3D distribution of interstellar dust extinction, search for rare objects (e.g. extremely metal-poor or hyper-velocity stars), and ultimately advance our understanding of the assemblage of the Milky Way and other galaxies and the origin of regularity and diversity of their properties. ... (abridged)
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | As a major component of the LAMOST Galactic surveys, the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC) will survey a significant volume of the Galactic thin/thick disks and halo in a contiguous sky area of ~ 3,400sq.deg., centered on the Galactic anti-center (|b| <= 30{\deg}, 150 <= l <= 210{\deg}), and obtain \lambda\lambda 3800--9000 low resolution (R ~ 1,800) spectra for a statistically complete sample of >= 3M stars of all colors, uniformly and randomly selected from (r, g - r) and (r, r - i) Hess diagrams obtained from a CCD imaging photometric survey of ~ 5,400sq.deg. with the Xuyi 1.04/1.20 m Schmidt Telescope, ranging from r = 14.0 to a limiting magnitude of r = 17.8 (18.5 for limited fields). | method 0.78 | 0.25 | 0.04 | asserted 0.98 |
| s1 | The survey will deliver spectral classification, radial velocity Vr and stellar parameters (effective temperature Teff, surface gravity log g and metallicity [Fe/H]) for millions of Galactic stars. | contribution 0.83 | 0.18 | 0.11 | asserted 1.00 |
| s2 | Together with Gaia which will provide accurate distances and tangential velocities for a billion stars, the LSS-GAC will yield a unique dataset to study the stellar populations, chemical composition, kinematics and structure of the disks and their interface with the halo, identify streams of debris of tidally disrupted dwarf galaxies and clusters, probe the gravitational potential and dark matter distribution, map the 3D distribution of interstellar dust extinction, search for rare objects (e.g. extremely metal-poor or hyper-velocity stars), and ultimately advance our understanding of the assemblage of the Milky Way and other galaxies and the origin of regularity and diversity of their properties. ... (abridged) | contribution 0.56 | 0.10 | 0.20 | asserted 0.95 |
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Original abstract
As a major component of the LAMOST Galactic surveys, the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC) will survey a significant volume of the Galactic thin/thick disks and halo in a contiguous sky area of ~ 3,400sq.deg., centered on the Galactic anti-center (|b| <= 30{\deg}, 150 <= l <= 210{\deg}), and obtain \lambda\lambda 3800--9000 low resolution (R ~ 1,800) spectra for a statistically complete sample of >= 3M stars of all colors, uniformly and randomly selected from (r, g - r) and (r, r - i) Hess diagrams obtained from a CCD imaging photometric survey of ~ 5,400sq.deg. with the Xuyi 1.04/1.20 m Schmidt Telescope, ranging from r = 14.0 to a limiting magnitude of r = 17.8 (18.5 for limited fields). The survey will deliver spectral classification, radial velocity Vr and stellar parameters (effective temperature Teff, surface gravity log g and metallicity [Fe/H]) for millions of Galactic stars. Together with Gaia which will provide accurate distances and tangential velocities for a billion stars, the LSS-GAC will yield a unique dataset to study the stellar populations, chemical composition, kinematics and structure of the disks and their interface with the halo, identify streams of debris of tidally disrupted dwarf galaxies and clusters, probe the gravitational potential and dark matter distribution, map the 3D distribution of interstellar dust extinction, search for rare objects (e.g. extremely metal-poor or hyper-velocity stars), and ultimately advance our understanding of the assemblage of the Milky Way and other galaxies and the origin of regularity and diversity of their properties. ... (abridged)
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References
How the literature uses it
13 arXiv papers cite this in 19 sentences
Papers citing it · 12 sentences without a confident label
Uses its data or values 1 paper
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In total, the XSTPS-GAC archives approximately 100 million stars down to a limiting magnitude of about 19 in the $r$ band ($∼$ 10$σ$) with an astrometric accuracy about 0.1$”$ and a global photometric accuracy of about 2% [ref] .
A three dimensional extinction map of the Galactic Anticentre from multi-band photometry · The XSTPS-GAC survey · 0.84
Cites it as background 6 papers
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The LAMOST (the Large sky Area Multi-Object fiber Spectroscopic Telescope; also known as Guo Shou Jing Telescope) project has carried out a pilot survey between October 2011 and June 2012 and obtained more than 700,000 spectra [ref] .
The K giant stars from the LAMOST survey data I: identification, metallicity, and distance · Introduction · 0.89
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It is the photometric part of the Digital Sky Survey of the Galactic Anti-center (DSS-GAC, Liu et al. 2015), and DSS-GAC is a photometric and spectroscopic sky survey [ref] .
New Open Cluster Candidates Discovered in the XSTPS-GAC Survey · INTRODUCTION · 0.91
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The Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre (XSTPS-GAC), which started collecting data in October 2009 and completed in March 2011, was carried out in order to provide input targets for the LSS-GAC [ref] .
A three dimensional extinction map of the Galactic Anticentre from multi-band photometry · The XSTPS-GAC survey · 0.82
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