3 papers
astro-ph.GA2025
Gas-phase Molecules in Protoplanetary Nebulae with the 21 μm Emission Feature II. Carbon monosulfide
Jian-Jie Qiu, Yong Zhang, Deng-Rong Lu +7
The carrier of the 21 m emission feature discovered in a handful of protoplanetary nebulae (PPNe) is one of the most intriguing enigmas in circumstellar chemistry. Investigating…
astro-ph.GA2025
Outflowing Gas in the Planetary Nebula K 3-54
Xiuhui Chen, Dejian Liu, Ping Yan +3
As planetary nebulae (PNe) evolve, they develop slow and strong dust-driven stellar winds, making the joint study of dust and gas essential for understanding their nature. As a pil…
astro-ph.GA2023
Gas-phase molecules in protoplanetary nebulae with the 21 μm emission feature
Jian-Jie Qiu, Yong Zhang, Jun-ichi Nakashima +6
It has been more than 30 years since the enigmatic 21 μm emission feature was first discovered in protoplanetary nebulae (PPNs). Although dozens of different dust carrier candidate…