221 citations · 366 across the 6 of their papers we have counts for
6 papers
The JCMT Spectral Legacy Survey: physical structure of the molecular envelope of the high-mass protostar AFGL2591
M. H. D. van der Wiel, F. F. S. van der Tak, M. Spaans +4
The understanding of the formation process of massive stars (>8 Msun) is limited, due to theoretical complications and observational challenges. We investigate the physical structu…
Dense molecular gas toward W49A: A template for extragalactic starbursts?
Helen Roberts, Floris van der Tak, Gary Fuller +2
The HCN, HCO+, and HNC molecules are commonly used as tracers of dense star-forming gas in external galaxies, but such observations are spatially unresolved. Reliably inferring the…
Chemical stratification in the Orion Bar: JCMT Spectral Legacy Survey observations
Matthijs H. D. van der Wiel, Floris F. S. van der Tak, Volker Ossenkopf +4
Photon-dominated regions (PDRs) are expected to show a layered structure in molecular abundances and emerging line emission, which is sensitive to the physical structure of the reg…
Galactic Edge Clouds I: Molecular Line Observations and Chemical Modelling of Edge Cloud 2
P. M. E. Ruffle, T. J. Millar, H. Roberts +5
Edge Cloud 2 (EC2) is a molecular cloud, about 35 pc in size, with one of the largest galactocentric distances known to exist in the Milky Way. We present observations of a peak CO…
The JCMT Spectral Legacy Survey
R. Plume, G. A. Fuller, F. Helmich +30
Stars form in the densest, coldest, most quiescent regions of molecular clouds. Molecules provide the only probes which can reveal the dynamics, physics, chemistry and evolution of…
Molecular Evolution in Collapsing Prestellar Cores III: Contraction of A Bonnor-Ebert Sphere
Yuri Aikawa, Eric Herbst, Helen Roberts +1
The gravitational collapse of a spherical cloud core is investigated by numerical calculations. The initial conditions of the core lie close to the critical Bonnor-Ebert sphere wit…