Jingkun Zhao; Gang Zhao; Yuqin Chen; Jianrong Shi; Yujuan Liu; Juyong Zhang
Source Publicationchinesejournalofastronomyandastrophysics
AbstractIt is well known that normalization, radial velocity correction and equivalent-width measurement of high-resolution stellar spectra are time-consuming work. In order to improve the efficiency we present an automatic method for these routines. The continuum is determined by fitting the 'high points' in. the spectrum. After continuum normalization, the program automatically searches for the position of the Ha line and obtains a rough radial velocity, then computes an accurate radial velocity by cross-correlation between the given spectrum and the solar spectrum. In this method, the equivalent-width is automatically measured using Gaussian fitting. A comparison between our results and those from traditional analysis shows that the typical error for equivalent width is around 3.8% in our method. Developing such automatic routines does not mean to replace the interactive reduction method: it is just for a quick extraction of information from the spectra, especially those obtained in large sky surveys.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jingkun Zhao,Gang Zhao,Yuqin Chen,et al. automaticnormalizationandequivalentwidthmeasurementofhighresolutionstellarspectra[J]. chinesejournalofastronomyandastrophysics,2006,6(6):689.
APA Jingkun Zhao,Gang Zhao,Yuqin Chen,Jianrong Shi,Yujuan Liu,&Juyong Zhang.(2006).automaticnormalizationandequivalentwidthmeasurementofhighresolutionstellarspectra.chinesejournalofastronomyandastrophysics,6(6),689.
MLA Jingkun Zhao,et al."automaticnormalizationandequivalentwidthmeasurementofhighresolutionstellarspectra".chinesejournalofastronomyandastrophysics 6.6(2006):689.
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