Narrow-Band Spectrophotometry of Comet Hale-Bopp (C/1995 O1) Near Perihelion I.: Photometric Behavior of C2, C3, CN Molecular Bands

Journal of Astronomy and Space Sciences

Jae Hyuk Youn¹  Ho-Il Kim¹  Eon-Chang Sung¹ 

[1] Korea Atronomy Observatory, 61-1, Hwaam-dong, Yuseong-Gu, Taejeon;

关键词: COMETS;    SPECTROPHOTOMETRY;    MOLECULAR BANDS;   

DOI  :  

来源: DOAJ

【 摘 要 】

We present the results from narrow-band spectrophotometry of Comet Hale-Bopp (C/1995 O1) near perihelion obtained at Sobaeksan Optical Astronomy Observatory 61cm telescope equipped with PM 512 CCD camera (512 x 512, 0.5''/pixel) and narrow-band filter set for the comet on 19 nights from February 21 to May 1, 1997. We discuss molecular emission band morphology and photometric behavior of Comet Hale-Bopp. The morphology of CN band shows more symmetric light distributions than C2 or C3 bands. On other hand, C2 and C3 band have more compact light distributions than CN band. Similar to wide-band image, molecular band morphology shows spiral structures at the core of the comet. The CN surface brightness variation with changing heliocentric distance shows difference from those of C2 and C.3 The brightness, however, of these molecular bands near perihelion shows previously known 7day period light variations.

【 授权许可】

Unknown