Authors:
- Nominated as an outstanding Ph.D. thesis by Kyoto University, Japan
- Received Best Presentation Award at the Japanese Society for Planetary Sciences (JSPS) Autumn Meeting 2017
- Proposes a new method to locate the position of the water snowline in disks using high-dispersion observations of water vapor lines
- Has been selected as a major contribution to the mid-infrared, high-dispersion spectroscopic observations of Space Infrared Telescope for Cosmology and Astrophysics (SPICA), which is the European–Japanese future space mission
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (6 chapters)
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Front Matter
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Back Matter
About this book
This book presents pioneering work on a critical observational test of the planet formation theory based on the theoretical study of the water snowline, beyond which water takes the form of ice, in the protoplanetary disks – the place where planets are formed. Since the water snowline is thought to divide the regions of rocky and gas-giant planet formation, the location of the snowline is essential for the planet formation process.
The book proposes a novel method to locate the snowlines using high-dispersion spectroscopic observations of water vapor lines, which is based on in sophisticated chemical modeling and line radiative transfer calculations. The author obtained the water vapor distribution in the disks using the chemical reaction network, which includes photoreactions and gas–grain interactions. The simulated transition lines of water vapor in the disks demonstrate that relatively weak transition lines with moderate excitation energies are the best tracers of water snowline.
Furthermore, the author observed submillimeter lines of water vapor in a disk using ALMA (Atacama Large Millimeter/submillimeter Array) to obtain the upper limit of the line fluxes with the highest sensitivity to date. These unprecedented findings are important in locating the snowlines in the disks, and the method goes a long way toward achieving a comprehensive understanding of the planet formation processes as well as of the origin of water on rocky planets, including our Earth, based on future observations using ALMA and SPICA (Space Infrared Telescope for Cosmology and Astrophysics).
Keywords
Authors and Affiliations
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Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research, Saitama, Japan
Shota Notsu
Bibliographic Information
Book Title: Water Snowline in Protoplanetary Disks
Authors: Shota Notsu
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-981-15-7439-9
Publisher: Springer Singapore
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2020
Hardcover ISBN: 978-981-15-7438-2Published: 02 September 2020
Softcover ISBN: 978-981-15-7441-2Published: 02 September 2021
eBook ISBN: 978-981-15-7439-9Published: 01 September 2020
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XIII, 134
Number of Illustrations: 2 b/w illustrations, 51 illustrations in colour
Topics: Astronomy, Observations and Techniques, Planetary Sciences