An Automated Method to Fit Stellar Continuum Based on Statistic Windows

被引：1

作者：

Pan Jing-chang ^{[1
]}

Wang Xing-xing ^{[1
]}

Wei Peng ^{[2
]}

Jiang Bin ^{[1
,2
]}

Tu Liang-ping ^{[2
,3
]}

Luo A-li ^{[1
,2
]}

机构：

[1] Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China

[2] Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China

[3] Liaoning Univ Sci & Technol, Sch Sci, Anshan 144051, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2012年 / 32卷 / 08期

关键词：

Stellar spectrum; Spectrum continuum; Statistic windows; Polynomial iteration fitting; Guoshoujing Telescope (LAMOST);

D O I：

10.3964/j.issn.1000-0593(2012)08-2260-04

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A novel statistic window based method to fit stellar continuum is proposed. First a stellar spectrum is divided into a series of statistic windows in which a certain percent of flux points is selected according to S/N ratio; then low order polynomial iteration fitting is carried out based on the selected flux points to obtain the stellar continuum. Experimental results show that the continuum obtained by the proposed method is more close to the real continuum, compared to other existed methods. This method has a better practical applicability and robustness to all kinds of spectra (except M-type spectrum) in SDSS. It also works well for Guoshoujing Telescope (LAMOST) pilot survey spectra.

引用

页码：2260 / 2263

页数：4

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