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Full-Text Articles in Physical Sciences and Mathematics
High Mass Star Formation And Methanol Masers, Nathanael Wilson
High Mass Star Formation And Methanol Masers, Nathanael Wilson
College of Science and Health Theses and Dissertations
Class I and Class II methanol (CH3OH) masers are believed to be good indicators for regions where high mass stars are being formed. High mass stars are important because they inuence the evolution of the Galaxy, but many details of their formation remain unknown. I present an investigation into the association of Class I and Class II CH3OH masers with high mass star formation in our Galaxy, in particular the evolutionary stages at which they occur. To do so, I have compared data on high mass star forming regions from the ATLASGAL survey with catalogs of Class I and Class …
Long Term Variation Of Class I Methanol Masers, Nycole Wenner
Long Term Variation Of Class I Methanol Masers, Nycole Wenner
College of Science and Health Theses and Dissertations
Class I methanol masers in high mass star forming regions are generally found in outflows. There, shocks provide the collisional pumping that causes the population inversion necessary for maser action. Less is known about Class I methanol masers compared to Class II. A better understanding of Class I masers will allow them to be used as more effective probes of high mass star formation, about which much remains to be learned. In particular, the variability of these masers could potentially be used to investigate activity in high mass star forming regions. I present an investigation of the long-term variability of …