7 papers
The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). XIII. Core Mass Function, Lifetime, and Growth of Prestellar Cores
Kaho Morii, Patricio Sanhueza, Qizhou Zhang +10
The core mass function (CMF) of prestellar cores is essential for understanding the initial conditions of star and cluster formation. However, the universality of the CMF and its r…
Dense Molecular Ring-like structure in gaseous CO depletion region G34.74-0.12
Shuting Lin, Siyi Feng, Fengwei Xu +14
We report the discovery of a dense molecular ring-like structure in a dense (10 cm), cold (pc-scale CO depletion at a factor of 5), and young (10 year) star-forming…
Cosmic-ray ionisation rate in low-mass cores: the role of the environment
E. Redaelli, S. Bovino, G. Sabatini +6
Context: Cosmic rays drive several key processes for the chemistry and dynamical evolution of star-forming regions. Their effect is quantified mainly by means of the cosmic-ray ion…
The ALMA Survey of 70 m Dark High-mass Clumps in Early Stages (ASHES). XII. Unanchored Forked Stream in the Propagating Path of a Protostellar Outflow
Shuting Lin, Siyi Feng, Patricio Sanhueza +14
Outflows are key indicators of ongoing star formation. We report the discovery of an unanchored forked stream within the propagating path of an extremely young protostellar outflow…
Impact of cosmic-ray propagation on the chemistry and ionisation fraction of dark clouds
G. Latrille, A. Lupi, S. Bovino +3
A proper modelling of the cosmic-ray ionisation rate within gas clouds is crucial to describe their chemical evolution accurately. However, this modelling is computationally demand…
Gas infall via accretion disk feeding Cepheus A HW2
A. Sanna, A. Oliva, L. Moscadelli +10
The star-forming region Cepheus A hosts a very young star, called HW2, that is the second closest to us growing a dozen times more massive than our Sun. The circumstellar environme…