5 papers
Chemistry and Dynamics in Pre-Protostellar Cores
Jeong-Eun Lee, Neal J. Evans, Yancy L. Shirley +1
We have compared the intensity distribution of molecular line emission with that of dust continuum emission, and modeled molecular line profiles in three different preprotostellar…
CS J = 7 -> 6 Mapping of Massive Star Formation Regions Associated with Water Masers
Claudia Knez, Yancy L. Shirley, Neal J. Evans +1
Twenty-four cores have been mapped in CS J = 7 -> 6 at the CSO. From the spectra we determine core sizes and virial masses. Combining results from the CS and dust continuum studies…
Early Phases and Initial Conditions for Massive Star Formation
Neal J. Evans, Yancy L. Shirley, Kaisa E. Mueller +1
Our knowledge of the initial conditions and early stages of high mass star formation is very limited. We will review recent surveys of regions in the early stages of massive star f…
Dust Continuum Observations of Massive Star Forming Regions
Kaisa E. Mueller, Yancy L. Shirley, Neal J. Evans +1
We have observed 51 high mass star forming cores associated with water masers at 350 micron. The spectral energy distributions (SEDs) and dust continuum normalized radial intensity…
A CS J = 5 -> 4 Mapping Survey Towards High Mass Star Forming Cores Associated with H2O Masers
Yancy L. Shirley, Neal J. Evans, Kaisa E. Mueller +2
In this survey we have systematically mapped 63 cloud cores in the CS J = 5 -> 4 line towards a sample of high mass star forming cores with water masers (Plume et al. 1992, Plume e…