The Backgroud Sky Subtraction Around [OIII] Line in LAMOST QSO Spectra

被引：2

作者：

Shi Zhi-xin ^{[1
,2
,3
]}

Comte, Georges ^{[2
,4
]}

Luo A-li ^{[2
]}

Tu Liang-ping ^{[5
]}

Zhao Yong-heng ^{[2
]}

Wu Fu-chao ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China

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

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

[4] Aix Marseille Univ, CNRS, UMR 7326, Inst Pytheas,LAM, F-13388 Marseille, France

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

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2014年 / 34卷 / 11期

关键词：

Sky background; Sky subtraction; Fiber spectroscopic telescope; Quasar; TELESCOPE LAMOST; DATA RELEASE;

D O I：

10.3964/j.issn.1000-0593(2014)11-3132-04

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

At present, most sky-subtraction methods focus on the full spectrum, not the particular location, especially for the backgroud sky around [OIII] line which is very important to low redshift quasars. A new method to precisely subtract sky lines in local region is proposed in the present paper, which sloves the problem that the width of H beta-[OIII] line is effected by the backgroud sky subtraction. The exprimental results show that, for different redshift quasars, the spectral quality has been significantly improved using our method relative to the original batch program by LAMOST. It provides a complementary solution for the small part of LAMOST spectra which are not well handled by LAMOST 2D pipeline. Meanwhile, This method has been used in searching for candidates of double-peaked Active Galactic Nuclei.

引用

页码：3132 / 3135

页数：4

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