Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Insights Into High Mass Star Formation From Methanol Maser Observations, Hontas Freeman Farmer
Insights Into High Mass Star Formation From Methanol Maser Observations, Hontas Freeman Farmer
College of Science and Health Theses and Dissertations
We present high angular resolution data on Class I and Class II methanol masers, together with other tracers of star formation like H2O masers, ultracompact (UC) ionized hydrogen (H II) regions, and 4.5 µm infrared sources, taken from the literature. The aim is to study what these data tell us about the process of high mass star formation; in particular, whether disk-outflow systems are compatible with the morphology exhibited by Class I and Class II methanol masers. Stars form in the dense cores inside molecular clouds, and while the process of the formation of stars like our …
H20 Maser Observations In W3 (Oh): A Comparison Of Two Epochs, Steven Merriman
H20 Maser Observations In W3 (Oh): A Comparison Of Two Epochs, Steven Merriman
College of Science and Health Theses and Dissertations
We present high resolution observations of 22 GHz H$_{2}$O masers toward the star forming region W3(OH), taken during two epochs using the Very Long Baseline Array telescope. We detected a total of 54 masers in observation BS198A, and 67 in BS198B, arranged in 3 groups. We determined that the observation BS198A took place during a period of quiescence, while BS198B was observed during a flaring period. We interpreted the maser morphology as lying on the eastern (Group 1) and western (Group 3) ends of an outflow, as well as near the outflow base (Group 2). We observed a velocity drift …