4 papers
Asymmetry in the protostellar system HOPS 198: Evidence for the evolution of outflow opening angle driven by density of the surrounding core
Donglin Wu, Héctor Arce, Cheng-Han Hsieh
Protostellar outflows are thought to be responsible for the low star formation efficiency of protostellar cores. However, whether outflows can disperse a significant fraction of th…
Preferential alignment of Class 0, Class I protostellar disks in multiple systems across nine nearby molecular clouds
Cheng-Han Hsieh, Aleksey Generozov, Stella S. R. Offner +6
Protostellar disk orientations in multiple systems provide critical insights into the primary mechanisms that govern the formation of multiple-star systems, their subsequent dynami…
Interstellar comet 3I/ATLAS: discovery and physical description
Bryce T. Bolin, Matthew Belyakov, Christoffer Fremling +18
We describe the physical characteristics of interstellar comet 3I/ATLAS, discovered on 2025 July 1 by the Asteroid Terrestrial-impact Last Alert System. The comet has eccentricity,…
CAMPOS II. The onset of protostellar disk substructures and planet formation
Cheng-Han Hsieh, Héctor G. Arce, María José Maureira +6
The 1.3 mm CAMPOS survey has resolved 90 protostellar disks with ~15 au resolution across the Ophiuchus, Corona Australis, and Chamaeleon star-forming regions. To address the funda…