Gas-phase Molecules in Protoplanetary Nebulae with the 21 μm Emission Feature. II. Carbon Monosulfide - Qiu, Jian-Jie; Zhang, Yong; Lu, Deng-Rong; Chang, Zheng-Xue; Zhang, Jiang-Shui; Li, Xiao-Hu; Tang, Xin-Di; Qiu, Yisheng; Nakashima, Jun-ichi; Jia, Lan-Wei (The Astronomical journal, 2025)
Keywords: Abundance; Carbon; Circumstellar envelopes; Circumstellar matter; Emission; Interstellar medium; Molecular gas; Nebulae; Optical analysis; Optical thickness; Protoplanetary nebulae; Stellar envelopes