Test observations that search for metal-poor stars with the Guoshoujing Telescope (LAMOST)

Details Test observations that search for metal-poor stars with the Guoshoujing Telescope (LAMOST) Test observations that search for metal-poor stars with the Guoshoujing Telescope (LAMOST)

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010raa....10..753l&link_type=abstract

Research in Astronomy and Astrophysics, Volume 10, Issue 8, pp. 753-760 (2010).

Astronomy and Astrophysics

Astrophysics

Scientific paper

Metal-deficient stars are regarded as fossils of the early generation of stars and therefore make crucial observational targets related to stellar astrophysics. They provide fundamental information and insights on properties of the very early stage of the chemical history of the Galaxy and have been investigated for decades. The unique design of the Guoshoujing Telescope (LAMOST), such as its large field and multi-object observational capability, enables it to be an excellent tool for searching for these metal-poor stars in the Milky Way. This work reports the result of test observations which search for metal-poor stars with LAMOST, during which nine candidate metal-poor stars with [Fe/H] <= -1.0 were newly detected based on the low-resolution spectroscopic observations of the LAMOST commissioning data. The sample of stars demonstrates the efficiency of selecting from the input catalog, as well as the ability of LAMOST to enlarge the sample of metal-poor stars in the Milky Way. Furthermore, the sample of stars could be used for future calibrations of the LAMOST stellar parameter pipeline.

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