A few tens au scale physical and chemical structures around young low-mass protostars
著者
書誌事項
A few tens au scale physical and chemical structures around young low-mass protostars
（Springer theses : recognizing outstanding Ph. D. research）
Springer, c2022
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注記
"Doctoral thesis accepted by the University of Tokyo, Japan."
Includes bibliographical references
内容説明・目次
内容説明
This book characterizes the kinematic and chemical structures of disk-forming regions around low-mass protostellar sources and their interplay based on Atacama Large Millimeter/submillimeter Array (ALMA) observations. It describes the chemical evolution of molecules formed in an interstellar gas using the ALMA observations of 5 Sun-like protostars at a spatial resolution of a few tens au scale, which unveils the physical mechanism of star and planetary formation.
The book reviews the author's successful works, focusing on two key findings: (i) A drastic change in the chemical composition of the gas around the centrifugal barrier of the infalling-rotating envelopes, and (ii) the chemical composition in the disk-forming regions, which varies from source to source depending on the chemical characteristics of the parent molecular cloud. These findings are based on the fine characterization of physical structures based on careful kinematic analyses. An additional attraction is the inclusion of the skillful reviews of ALMA observatory and its observation and physical models to describe the observed gas structure.
目次
Introduction.- ALMA Observation.- Model Calculation.- L1527.- IRAS 15398-3359.- IRAS 16293-2422 Source A.- IRAS 16293-2422 Source B.- L483.- Chemical Differentiation.- Physical Diversity.- Conclusion.
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