LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) — The survey's science plan

By Licai Deng, Heidi Jo Newberg, Chao Liu, J. Carlin, Timothy C. Beers, Li Chen, Yuqin Chen, N. Christlieb, C. Grillmair, P. Guhathakurta and 16 more. 2012

332 citations recorded by the source corpus.

We describe the current plans for a spectroscopic survey of millions of stars in the Milky Way galaxy using the Guo Shou Jing Telescope (GSJT, formerly called the Large sky Area Multi-Object fiber Spectroscopic Telescope — LAMOST). The survey will obtain spectra for 2.5 million stars brighter than r < 19 during dark/grey time, and 5 million stars brighter than r < 17 or J < 16 on nights that are moonlit or have low transparency. The survey will begin in the fall of 2012, and will run for at least four years. The telescope's design constrains the optimal declination range for observations to 10° < δ < 50°, and site conditions lead to an emphasis on stars in the direction of the Galactic anticenter. The survey is divided into three parts with different target selection strategies: disk, anticenter, and spheroid. The resulting dataset will be used to study the merger history of the Milky Way, the substructure and evolution of the disks, the nature of the first generation of stars through identification of the lowest metallicity stars, and star formation through study of open clusters and OB associations. Detailed design of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) survey will be completed in summer 2012, after a review of the results of the pilot survey.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/9f51b3fcb328e0438e3e24b16a6de9a898767b50

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Citations in the corpus

Near-Field Cosmology with Extremely Metal-Poor Stars (2015, background): “The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST; Deng et al. (2012); http://www.lamost.org/public/dr1?locale=en) has a dedicated galactic program called LEGUE which provides low (R ∼ 1500) resolution spectroscopy of up to 4000 stars per pointing (facilitated by 16 linked…”
Red Clump Stars from LAMOST II: the outer disc of the Milky Way (2017, background): “The LAMOST survey has covered the Galactic Anti-center region well due to special conditions associated with the site of the telescope (Deng et al. 2012; Yao et al. 2012).”
KINEMATICS OF THE STELLAR HALO AND THE MASS DISTRIBUTION OF THE MILKY WAY USING BLUE HORIZONTAL BRANCH STARS (2012, background): “With the advent of data inflowing in the coming decades through the magnificent next generation of spectroscopic survey like LEGUE (Deng et al. 2012) and specially, unprecedented proper motions from an astrometric mission like GAIA (Perryman 2002) will help to put strong 15 constrains on these funda”
Mapping the Milky Way with LAMOST– III. Complicated spatial structure in the outer disc (2018, methodology): “Therefore, we use the RGB stars observed in the LAMOST survey (Cui et al. 2012; MNRAS 000, 1–15 (2017) Zhao et al. 2012; Deng et al. 2012) to probe the structures of the outer disc.”
The first data release (DR1) of the LAMOST regular survey (2015, background): “A total of 4000 fibers mounted on its focal plane make the LAMOST facility a powerful tool with a high spectral acquisition rate (Deng et al. 2012).”
The Galaxy in Context: Structural, Kinematic, and Integrated Properties (2016, background): “…Radial Velocity Experiment (RAVE; Steinmetz et al. 2006); APOGEE (Allende Prieto et al. 2008); LAMOST Experiment for Galactic Understanding and Exploration (LEGUE; Deng et al. 2012); Gaia ESO Survey (GES; Gilmore et al. 2012); and Galactic Archaeology with Hermes (GALAH; De Silva et al. 2015).”
StarHorse : a Bayesian tool for determining stellar masses, ages, distances, and extinctions for field stars (2017, methodology): “…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; Gilmore 2012).”
The Gaia-ESO Survey: the analysis of high-resolution UVES spectra of FGK-type stars (2014, methodology): “…2014), the GALactic Archaeology with HERMES (GALAH, Zucker et al. 2012), the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE, Deng et al. 2012), the RAdial Velocity Experiment (RAVE, Steinmetz et al. 2006; Kordopatis et al. 2013), the Sloan Extension for Galactic…”
LAMOST spectral survey — An overview (2012, background): “We are planning a survey footprint that concentrates the spectroscopic targets in the areas of the sky when we will have more observing time (Deng et al. 2012; Yang et al.2012; Zhang et al. 2012; Carlin et al. 2012 in this volume).”
The Milky Way's rotation curve out to 100 kpc and its constraint on the Galactic mass distribution (2016, neutral): “LSS-GAC is a major component of the on-going LAMOST Experiment for Galactic Understanding and Exploration (LEGUE; Deng et al. 2012).”
Data release of the LAMOST pilot survey (2012, background): “In order to check the real instrumental performance and assess the feasibility of the science goals, the science working groups of LAMOST came up with the pilot survey of LAMOST, which was conducted before the regular spectral survey (Deng et al. 2012).”
The Milky Way’s stellar disk (2013, background): “While only high-dispersion and high-S/N spectra will yield tight log g estimates, even moderate-resolution and moderateS/N spectra (as for the SEGUE and LAMOST surveys; see Section 3.3.2) suffice to separate giants from dwarfs (e.g., Yanny et al. 2009), thereby discriminating the multiple branches o”
Metallicity distributions of mono-age stellar populations of the Galactic disc from the LAMOST Galactic spectroscopic surveys (2018, positive): “Recently, robust ages for a million main-sequence turn-off and sub-giant stars (MSTO-SG), selected from the LAMOST Galactic spectroscopic surveys (Cui et al. 2012; Zhao et al. 2012; Deng et al. 2012; Liu et al. 2014; Yuan et al. 2015), have become available (Xiang et al. 2017a).”
The GALAH survey and Gaia DR2: dissecting the stellar disc’s phase space by age, action, chemistry, and location (2018, background): “…N ational U niversity user on 10 O ctober 2019 (Steinmetz et al. 2006), APOGEE (Majewski et al. 2017), GaiaESO (Gilmore et al. 2012), LAMOST (Deng et al. 2012) – and are now able to exploit the overlap of targets with Gaia DR2 – this is the golden age of Galactic archaeology (Freeman &…”
The Pristine survey - I. Mining the Galaxy for the most metal-poor stars (2017, background): “…Multi-Object Fiber Spectroscopic Telescope, Cui et al. 2012) with its LEGUE project (LAMOST Experiment for Galactic Understanding and Exploration, Deng et al. 2012) offer good candidate lists from their initial low-resolution spectra to follow-up at higher resolution (Caffau et al. 2012; Aoki et…”