The Chemical Classification of the AGB Star IRAS 17515-2407

The chemical classification of IRAS 17515-2407 has been debated for a long time. Up to now there are two contenders, oxygen-rich or carbon-rich. We believe that IRAS 17515-2407 is an oxygen-rich source: because (i) it shows the silicate self-absorbed emission; (ii) in the near infrared-IRAS diagram it is located in the oxygen-rich object region and (iii) particularly, it has detected SiO maser emission.

作 者： Pei-Sheng Chen Pin Zhang   作者單位： Pei-Sheng Chen(National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences,Kunming 650011)

Pin Zhang(National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences,Kunming 650011;Cosmic Ray Institute, Yunnan University, Kunming 650091) 

刊 名： 天體物理學(xué)報(bào)(英文版)  ISTIC SCI 英文刊名： CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS  年，卷(期)： 2003 3(6)  分類號(hào)： P14  關(guān)鍵詞： stars: AGB - stars: chemical classification - stars: maser - infrared:stars  

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