title: [An automated method to fit stellar continuum based on statistic windows].
abstract: 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.
authors.affiliation: School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China. pjc@sdu.edu.cn
authors.forename: Jing-chang
authors.initials: JC
authors.lastname: Pan
authors.forename: Xing-xing
authors.initials: XX
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Wei
authors.forename: Bin
authors.initials: B
authors.lastname: Jiang
authors.forename: Liang-ping
authors.initials: LP
authors.lastname: Tu
authors.forename: A-li
authors.initials: AL
authors.lastname: Luo