A Few Tens au Scale Physical and Chemical Structures Around Young Low-Mass Protostars

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Yoko Oya

A Few Tens au Scale Physical and Chemical Structures Around Young Low-Mass Protostars

Yoko Oya

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English

Springer Verlag, Singapore
09 November 2022

Astronomical observation: observatories, equipment & methods; Galaxies & stars; Nuclear structure physics; Astrophysics; Physical chemistry

Series: Springer Theses

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 theinclusion of the skillful reviews of ALMA observatory and its observation and physical models to describe the observed gas structure.

By: Yoko Oya
Imprint: Springer Verlag, Singapore
Country of Publication: Singapore
Edition: 2022 ed.
Dimensions: Height: 235mm, Width: 155mm,
Weight: 512g
ISBN: 9789811917073
ISBN 10: 9811917078
Series: Springer Theses
Pages: 212
Publication Date: 09 November 2022
Audience: Professional and scholarly , Undergraduate
Format: Hardback
Publisher's Status: Active

Yoko Oya is an Assistant Professor in the Department of Physics at the University of Tokyo. Her work focuses on the physics and chemistry of star and planet formation. She received her bachelor’s, master’s and Ph.D. from the University of Tokyo. She was awarded a Research Fellowship for Young Scientists (DC1) by the Japan Society for the Promotion of Science (JSPS) in 2015, and was supported by JSPS during her doctoral course. In 2018, she won the University of Tokyo President’s award and the School of Science Encouragement Award as an outstanding graduate student.