光谱学与光谱分析 |
|
|
|
|
|
The Backgroud Sky Subtraction Around [OIII] Line in LAMOST QSO Spectra |
SHI Zhi-xin1, 2, 3, Georges Comte2, 4, LUO A-li2*, TU Liang-ping5, ZHAO Yong-heng2, WU Fu-chao1 |
1. National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China 2. Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 3. University of Chinese Academy of Sciences, Beijing 100049, China 4. Aix-Marseille Université, CNRS, Institut Pythéas, L.A.M., UMR 7326, F-13388 Marseille Cedex, France 5. School of Science, University of Science and Technology, Anshan 144051, China |
|
|
Abstract 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 Hβ-[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.
|
Received: 2013-11-12
Accepted: 2014-02-10
|
|
Corresponding Authors:
LUO A-li
E-mail: lal@lamost.org
|
|
[1] York D, Adelman J, Anderson J, et al. The Astronomical Journal, 2000, 120(3): 1579. [2] Gunn J, Siegmund W, Mannery E, et al. The Astronomical Journal, 2006, 131(4): 2332. [3] BAI Zhong-rui, ZHANG Lei, YE Zhong-fu(白仲瑞,张 垒,叶中付). Acta Astronomica Sinica(天文学报), 2007, 48(4): 507. [4] Kurtz M J, Mink D J. The Astrophysical Journal Latters, 2000, 533(2):L183. [5] Wild V, Hewett P. Monthly Notices of the Royal Astronomical Society, 2005, 358(3):1083. [6] Sharp R,Parkinson H. Monthly Notices of the Royal Astronomical Society, 2010, 408(4):2495. [7] Abazajian K, Adelman-McCarthy J K, Agüeros M A, et al. The Astronomical Journal, 2004, 128(1):502. [8] Cui X Q, Zhao Y H, Chu Y Q, et al. Research in Astronomy and Astrophysics, 2012, 12(9):1197. [9] Luo A L, Zhang Y X, Zhao Y H. Astronomical Telecopes and Instrumentation. International Society for Optics and Photonics, 2004, 756. [10] Luo A L, Zhang H T, Zhao Y H, et al. Research in Astronomy and Astrophysics, 2012, 12(9): 1243. [11] Song Yihan, Luo Ali, Comte Georges, et al. Research in Astronomy and Astrophysics, 2012, 12(4): 453. |
[1] |
MA Yang, ZHANG Ji-fu, CAI Jiang-hui, YANG Hai-feng, ZHAO Xu-jun*. Parallel Extraction and Analysis of Abnormal Features of QSO Spectra Based on Sparse Subspace[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(04): 1086-1091. |
[2] |
CAI Jiang-hui1, YANG Yu-qing1, YANG Hai-feng1*, LUO A-li2, KONG Xiao2, ZHANG Ji-fu1. Spectral Analysis of Sky Light Based on Trajectory Clustering[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(04): 1301-1306. |
[3] |
ZHU Hai-jing1, QIU Bo1*, CHEN Jian-jun2*, FAN Xiao-dong1, HAN Bo-chong1, LIU Yuan-yun1, WEI Shi-ya1, MU Yong-huan1. Bending Correction of 2D Optical Fiber Spectra Based on Normal Mapping Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(02): 622-627. |
[4] |
AN Ran1, PAN Jing-chang1*, YI Zhen-ping1, WEI Peng2 . The Automatic Recognition and Detection of Sky-Subtraction Residual Componentin the Stellar Spectra [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(01): 273-277. |
[5] |
BAO Jian-guang, LIU Zheng-kun*, CHEN Huo-yao, LIN Ji-ping, FU Shao-jun . Development of Micro-Spectrometer with a Function of Timely Temperature Compensation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(05): 1409-1413. |
[6] |
CHEN Jian-jun1,2, BAI Zhong-rui1,2, LI Guang-wei1, WANG Shu-qing1, LUO A-li1, ZHAO Yong-heng1 . Correction of Fiber Throughput Variation Due to the Focal Ratio Degradation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(04): 1099-1102. |
[7] |
ZHANG Zhong-wei1, 2, WEN Zhi-yu1, 2, ZENG Tian-ling1, 2, WEI Kang-lin3, LIANG Yu-qian1, 2 . Miniature Near-Infrared Fibre Optic Spectrometer for the Quantitative Detection of Protein and Fat in Milk Powder [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(07): 1796-1800. |
[8] |
XU Ying-ying1,2, JIN Wei-qi2, MA Wen-wen2, LU Li-gen3, MU Sheng-bo2, NI Jun-xiong2 . Measurement of Night Sky Spectral Radiation and Analysis of Spectral Denoising [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(06): 1456-1459. |
[9] |
LI Xiang-ru1, FENG Chun-ming2, WANG Yong-jun1, LU Yu1 . A Novel Spectrum Feature Extraction Method [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(10): 2856-2860. |
[10] |
LI Xiang-ru1, LU Yu1, ZHOU Jian-ming2, WANG Yong-jun1 . Galaxy/Quasar Classification Based on Nearest Neighbor Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(09): 2582-2585. |
[11] |
ZHENG Bao-hua1,3, CHENG De-fu1, ZHENG Zhi-zhong2, XIU Lian-cun2 . Wide-Range Fiber Spectral Instrument Covering [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1417-1421. |
[12] |
YANG Hai-qing1,2, YAO Jian-song3,HE Yong1* . SPAD Prediction of Leave Based on Reflection Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(06): 1607-1610. |
[13] |
LI Xiang-ru1,2,LIU Zhong-tian1,2,HU Zhan-yi1*,WU Fu-chao1,ZHAO Yong-heng2 . Celestial Spectrum Flux Standardization for Classification[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1448-1451. |
[14] |
ZHAO Mei-fang1, LUO A-li2, WU Fu-chao1, HU Zhan-yi1 . Automated Recognition of Quasars Based on Adaptive Radial Basis Function Neural Networks[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(02): 377-381. |
[15] |
LIU Rong1, DUAN Fu-qing2*, LUO A-li3. A Method for Redshift Determination of Quasars Based on Cross Correlation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(07): 1155-1157. |
|
|
|
|