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astro-ph.GA2026
Interferometric molecular line observations toward the 21 μm protoplanetary nebula IRAS 06530-0213
Hao-Min Sun, Zhuang Zhang, Jun-Yang Liu +2
The identification of the feature in some protoplanetary nebulae remains a longstanding puzzle, whose interpretation requires characterization of the molecular ga…
astro-ph.GA2025
A 3mm molecular line survey toward IRC+10216
Yi-Na Ao, Yong Zhang, Jian-Jie Qiu +2
IRC+10216 is the brightest infrared source in the northern sky, known for its rich chemical composition. It is often used as a standard reference for studying the circumstellar env…
astro-ph.GA2025
A molecule-rich torus-like structure in the 21 m source IRAS 23304+6147
Hao-Min Sun, Yong Zhang, Xu-Jia Ouyang +4
A long-standing enigma in observational astronomy is the identification of the so-called 21 m feature in a subset of envelopes of post-asymptotic giant branch (post-AGB) stars.…