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We observed Comet Machholz (C/2004Q2) using the BOES (BOao Echelle Spectograph)\udat the Bohyunsan Observatory on January 4, 2005. We have studied a\udwavelength range of 4800 » 8100 °A in order to investigate unidentified spectral\udlines in the high-resolution spectra of Machholz. We compared the Machholz spectra\udwith the high-resolution spectra of previous comets: Swift-Tuttle, Brorsen-Metcalf,\udAustin, and 122P/de Vico. We identified many molecular lines, which are previously\udunknown; and these identifications will be useful information for studying highresolution\udspectra of future comets

Study of Unidentified Spectral Lines in the High-Resolution Spectra of Comet Machholz (C/2004Q2)