Steps towards a fully automated classification and redshift measurement pipeline for LAMOST spectra. I. Continuum level and wavelength estimation for galaxies

	Steps towards a fully automated classification and redshift measurement pipeline for LAMOST spectra. I. Continuum level and wavelength estimation for galaxies
	Luo, AL; Zhao, YH
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2001-12-01
卷号	1 期号:6 页码:563-572
关键词	methods : data analysis techniques : spectroscopic galaxies : emission lines galaxies : absorption lines
英文摘要	The Large Sky-Area Multi-Object Spectroscopic Telescope (LAMOST) under construction by the National Astronomical Observatories will yield up to four thousand multi-fiber spectra of stars and galaxies per field. The present series of papers describes the automated data-reduction pipeline currently being designed in order to cope with the anticipated flood of spectrographic data. In this preliminary paper, we present an automated method for estimating the continuum level, the positions of strong lines and the 4000 Angstrom break in galaxy spectra. In order to obtain detailed information on the continuum, we use a wavelet filter bank. After continuum fitting, our software searches for a 4000 Angstrom break and distinguishes between emission-line galaxies (ELGs) and non-ELGs according to whether the break is small or large. It then searches for strong lines and measures the intensities of emission lines and the equivalent widths of absorption lines. For non-ELGs, the absorption lines are identified automatically yielding redshift measurements.
收录类别	SCI
语种	英语
WOS记录号	WOS:000173057800011
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8595]
专题	国家天文台_光学天文研究部
作者单位	Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Luo, AL,Zhao, YH. Steps towards a fully automated classification and redshift measurement pipeline for LAMOST spectra. I. Continuum level and wavelength estimation for galaxies[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(6):563-572.
APA	Luo, AL,&Zhao, YH.(2001).Steps towards a fully automated classification and redshift measurement pipeline for LAMOST spectra. I. Continuum level and wavelength estimation for galaxies.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,1(6),563-572.
MLA	Luo, AL,et al."Steps towards a fully automated classification and redshift measurement pipeline for LAMOST spectra. I. Continuum level and wavelength estimation for galaxies".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 1.6(2001):563-572.