Automatic determination of stellar atmospheric parameters and construction of stellar spectral templates of the Guoshoujing Telescope (LAMOST)

By Yue Wu, A. Luo, Haining Li, Jian-rong Shi, P. Prugniel, Yan-chun Liang, Yongheng Zhao, Jian-Na Zhang, Z. Bai, P. Wei and 3 more. 2011

147 citations recorded by the source corpus.

A number of spectroscopic surveys have been carried out or are planned to study the origin of the Milky Way. Their exploitation requires reliable automated methods and softwares to measure the fundamental parameters of the stars. Adopting the ULySS package, we have tested the effect of different resolutions and signal-to-noise ratios (SNR) on the measurement of the stellar atmospheric parameters (effective temperature Teff, surface gravity log g, and metallicity [Fe/H]). We show that ULySS is reliable for determining these parameters with medium-resolution spectra (R ∼ 2000). Then, we applied the method to measure the parameters of 771 stars selected in the commissioning database of the Guoshoujing Telescope (LAMOST). The results were compared with the SDSS/SEGUE Stellar Parameter Pipeline (SSPP), and we derived precisions of 167 K, 0.34 dex, and 0.16 dex for Teff, log g and [Fe/H] respectively. Furthermore, 120 of these stars are selected to construct the primary stellar spectral template library (Version 1.0) of LAMOST, and will be deployed as basic ingredients for the LAMOST automated parametrization pipeline.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/2ba67cad0cf71a38f2c6a7ccf31a651d0e7ff711

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Chao Liu
2. Jun-Chen Wan
3. Licai Deng
4. Zhanwen Han
5. Yan-Chuan Cai
6. A. Luo
7. Xuelei Chen
8. Huawei Zhang

In Instrumentation

1. Chao Liu
2. Jun-Chen Wan
3. Licai Deng
4. A. Luo
5. Jianling Wang
6. Yue Wu
7. Jian-Jun Chen
8. Hong Wu

Citations in the corpus

• The first data release (DR1) of the LAMOST regular survey (2015, methodology): “The LASP consecutively adopts two methods — Correlation Functio Initial (CFI) value and UlySS (Wu et al. 2011a) — to determine stellar parameters.”
• Red Clump Stars from LAMOST II: the outer disc of the Milky Way (2017, methodology): “The LAMOST DR2 published [Fe/H] and Teff parameters were determined by the LASP pipeline (LAMOST Stellar Parameter Pipeline, Wu et al. 2011, 2014).”
• The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) (2012, methodology): “…the ‘redshift desert’ and eight new quasars discovered by Wu et al. (2010b), as well as eight new candidates of metal-poor stars discovered by Li et al. (2010) and another eight new candidates discovered inthe pipeline for automatic determination of stellar atmospheric parameters (Wu et al. 2011a).”