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Stellar Disk Evolution and Gaseous Disk Turbulence of Dwarf Irregular Galaxies

  • Book
  • © 2016

Overview

Authors:
  1. Hong-Xin Zhang

    1. Pontificia Universidad Catolica de Chile, Instituto de Astrofísica, Facultad de Física, Santiago, Chile

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  • Nominated as an outstanding thesis by University of Chinese Academy of Sciences
  • Establishes the "outside-in" disk growth mode for most nearby dwarf irregular galaxies
  • Disproves the existence of a correlation between gas spatial power spectral indices and star formation in galaxies
  • Provides indirect evidence that inner disks of dwarf galaxies have proportionally more cool gas
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (5 chapters)

  1. Front Matter

    Pages i-xix
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  2. An Introduction to Disk Evolution of Dwarf Galaxies

    • Hong-Xin Zhang
    Pages 1-19

  3. Stellar Disk Evolution of Nearby Dwarf Galaxies

    • Hong-Xin Zhang
    Pages 21-79

  4. Gaseous Disk Turbulence of Nearby Dwarf Irregular Galaxies

    • Hong-Xin Zhang
    Pages 81-113

  5. Blue Compact Dwarf Galaxies Formed Through Gravitational Torques

    • Hong-Xin Zhang
    Pages 115-133

  6. Summary

    • Hong-Xin Zhang
    Pages 135-141

  7. Back Matter

    Pages 143-165
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Keywords

About this book

This book focuses on the stellar disk evolution and gas disk turbulence of the most numerous galaxies in the local Universe – the dwarf galaxies. The “outside-in” disk shrinking mode was established for a relatively large sample of dwarf galaxies for the first time, and this is in contrast to the “inside-out” disk growth mode found for spiral galaxies. Double exponential brightness profiles also correspond to double exponential stellar mass profiles for dwarf galaxies, which is again different from most spiral galaxies. The cool gas distribution in dwarf galaxies was probed with the spatial power spectra of hydrogen iodide (HI) gas emission, and provided indirect evidence that inner disks of dwarf galaxies have proportionally more cool gas than outer disks. The finding that no correlation exists between gas power spectral indices and star formation gave important constraints on the relation between turbulence and star formation in dwarf galaxies.

Authors and Affiliations

  • Pontificia Universidad Catolica de Chile, Instituto de Astrofísica, Facultad de Física, Santiago, Chile

    Hong-Xin Zhang

About the author

Dr. Hong-Xin Zhang received his Ph.D. in Astrophysics from the University of Chinese Academy of Sciences in July 2012. His major research project was on the star formation history variations and the interstellar medium turbulence in nearby galaxies. Subsequently, he became a post-doc fellow working with Prof. Eric Peng at the Department of Astronomy, Peking University, focusing on studying the nature of Ultra-compact Dwarf Galaxies in the Virgo Cluster.

Bibliographic Information

  • Book Title: Stellar Disk Evolution and Gaseous Disk Turbulence of Dwarf Irregular Galaxies

  • Authors: Hong-Xin Zhang

  • Series Title: Springer Theses

  • DOI: https://doi.org/10.1007/978-3-662-52867-9

  • Publisher: Springer Berlin, Heidelberg

  • eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)

  • Copyright Information: Springer-Verlag Berlin Heidelberg 2016

  • Hardcover ISBN: 978-3-662-52865-5Published: 02 September 2016

  • Softcover ISBN: 978-3-662-57089-0Published: 15 June 2018

  • eBook ISBN: 978-3-662-52867-9Published: 27 August 2016

  • Series ISSN: 2190-5053

  • Series E-ISSN: 2190-5061

  • Edition Number: 1

  • Number of Pages: XIX, 165

  • Number of Illustrations: 15 b/w illustrations, 35 illustrations in colour

  • Topics: Astronomy, Astrophysics and Cosmology

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