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Dwarf Galaxies: Keys to Galaxy Formation and Evolution

Dwarf Galaxies: Keys to Galaxy Formation and Evolution
Author: Polychronis Papaderos
Publisher: Springer Science & Business Media
Total Pages: 347
Release: 2012-04-23
Genre: Science
ISBN: 3642220185

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Dwarf galaxy research constitutes an extremely vibrant field of astrophysical research, with many long-standing questions still unsettled and new ones constantly arising. The intriguing diversity of the dwarf galaxy population, observed with advanced ground-based and space-borne observatories over a wide spectral window providing an unprecedented level of detail, poses new challenges for both observers and theoreticians. The aim of this symposium was to bring together these two groups to exchange ideas and new results on the many evolutionary aspects of and open issues concerning dwarf galaxies. The main topics addressed include: the birth of dwarf galaxies: theoretical concepts and observable relics across wavelengths and time, the morphological, structural and chemical evolution of dwarf galaxies, possible evolutionary connections between early-type and late-type dwarfs, the star formation history of dwarf galaxies and its dependence on intrinsic and environmental properties, the origin and implications of starburst activity in dwarf galaxies, the fate of dwarfish systems born out of tidally ejected matter in galaxy collisions.


Stellar Disk Evolution and Gaseous Disk Turbulence of Dwarf Irregular Galaxies

Stellar Disk Evolution and Gaseous Disk Turbulence of Dwarf Irregular Galaxies
Author: Hong-Xin Zhang
Publisher: Springer
Total Pages: 179
Release: 2016-08-27
Genre: Science
ISBN: 3662528673

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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.


Star Formation in Dwarf Galaxies

Star Formation in Dwarf Galaxies
Author: Shawfeng Dong
Publisher:
Total Pages: 322
Release: 2003
Genre: Dwarf galaxies
ISBN:

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Dwarf Galaxies

Dwarf Galaxies
Author: Jeroen Maarten Stil
Publisher:
Total Pages: 222
Release: 1999
Genre:
ISBN:

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