LAMOST DR1: Stellar Parameters and Chemical Abundances with SP_Ace

被引：23

作者：

Boeche, C. ^{[1
,2
]}

Smith, M. C. ^{[3
]}

Grebel, E. K. ^{[1
]}

Zhong, J. ^{[3
]}

Hou, J. L. ^{[3
,4
]}

Chen, L. ^{[3
,4
]}

Stello, D. ^{[5
,6
,7
]}

机构：

[1] Heidelberg Univ, Astron Rechen Inst, Zentrum Astron, Monchhofstr 12-14, D-69120 Heidelberg, Germany

[2] Padova Observ, INAF, I-35122 Padua, Italy

[3] Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[5] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia

[6] Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW 2006, Australia

[7] Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark

来源：

ASTRONOMICAL JOURNAL | 2018年 / 155卷 / 04期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

catalogs; Galaxy: abundances; stars: abundances; surveys; 1ST DATA RELEASE; ATMOSPHERIC PARAMETERS; TELESCOPE LAMOST; STARS; ISOCHRONES; DERIVATION; SPECTRA; DWARF;

D O I：

10.3847/1538-3881/aab5af

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new analysis of the LAMOST DR1 survey spectral database performed with the code SP_Ace, which provides the derived stellar parameters T-eff, log g, [Fe/H], and [alpha/H] for 1,097,231 stellar objects. We tested the reliability of our results by comparing them to reference results from high spectral resolution surveys. The expected errors can be summarized as similar to 120. K in T-eff, similar to 0.2 in log g, similar to 0.15. dex in [Fe/H], and similar to 0.1. dex in [alpha/Fe] for spectra with S/N > 40, with some differences between dwarf and giant stars. SP_Ace provides error estimations consistent with the discrepancies observed between derived and reference parameters. Some systematic errors are identified and discussed. The resulting catalog is publicly available at the LAMOST and CDS websites.

引用

页数：22

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