5 papers
The highly variable time evolution of star-forming cores identified with dendrograms
Rachel A. Smullen, Kaitlin M. Kratter, Stella S. R. Offner +2
We investigate the time evolution of dense cores identified in molecular cloud simulations using dendrograms, which are a common tool to identify hierarchical structure in simulati…
Relative Alignment between Dense Molecular Cores and Ambient Magnetic Field: The Synergy of Numerical Models and Observations
Che-Yu Chen, Erica A. Behrens, Jasmin E. Washington +26
The role played by magnetic field during star formation is an important topic in astrophysics. We investigate the correlation between the orientation of star-forming cores (as defi…
Investigating the Complex Velocity Structures within Dense Molecular Cloud Cores with GBT-Argus
Che-Yu Chen, Shaye Storm, Zhi-Yun Li +12
We present the first results of high-spectral resolution (0.023 km/s) NH observations of dense gas dynamics at core scales (~0.01 pc) using the recently commissioned Argus…
Droplets II: Internal Velocity Structures and Potential Rotational Motions in Pressure-dominated Coherent Structures
Hope How-Huan Chen, Jaime E. Pineda, Stella S. R. Offner +6
We present an analysis of the internal velocity structures of the newly identified sub-0.1 pc coherent structures, droplets, in L1688 and B18. By fitting 2D linear velocity fields…
Efficient methanol production on the dark side of a prestellar core
Jorma Harju, Jaime E. Pineda, Anton I. Vasyunin +23
We present ALMA maps of the starless molecular cloud core Ophiuchus/H-MM1 in the lines of deuterated ammonia (ortho-NH2D), methanol (CH3OH), and sulphur monoxide (SO). The dense co…