Stellar Disk Evolution And Gaseous Disk Turbulence Of Dwarf Irregular Galaxies PDF Download
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| Author | : Hong-Xin Zhang |
| Publisher | : Springer |
| Total Pages | : 179 |
| Release | : 2016-08-27 |
| Genre | : Science |
| ISBN | : 3662528673 |
Download Stellar Disk Evolution and Gaseous Disk Turbulence of Dwarf Irregular Galaxies Book in PDF, ePub and Kindle
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.
| Author | : Kenneth Freeman |
| Publisher | : Springer |
| Total Pages | : 510 |
| Release | : 2014-11-13 |
| Genre | : Science |
| ISBN | : 3319106147 |
Download Lessons from the Local Group Book in PDF, ePub and Kindle
Our understanding of galaxy formation comes mostly from two sources: sensitive observations at high angular resolution of the high-redshift Universe, where galaxies are observed to be forming, and detailed observations of individual stars and clouds in the Local Group, where telltale remnants from its formative time remain and similar processes operate at a low level today. The current conference focusses on key aspects of the Local Group, composed of the Milky Way, Andromeda and Triangulum Spiral Galaxies, the Large and Small Magellanic Cloud galaxies, numerous dwarf and irregular galaxies, and intergalactic gas. Topics include the halo and thick disk of the Milky Way with its first stars and stellar streams; the Milky Way bar, bulge and outer edge; interstellar dust and turbulence; star formation processes and stellar scattering in spiral arms; views through the infrared Eyes of the Spitzer Space Telescope; globular clusters; the Local Gould Belt; stellar metallicities and elemental abundances; the environment and black hole in the Milky Way nucleus; orbits of the Magellanic Clouds and galaxy dwarfs; interstellar dust and turbulence; the outer disks and halos of the Andromeda and Triangulum galaxies; ripples from a collision in Andromeda; and arcs of carbon stars in the Triangulum and intergalactic clouds. This volume also discusses surveys of planetary nebulae, galaxy morphology at low and high redshift, cosmic evolution of star and galaxy formation and gas accretion, Lyman alpha emitting galaxies, ultra-low surface brightness imaging, and more. Readers are given a clear and comprehensive view of this wide range of topics written by specialists in each field. This is the proceedings of an International Conference at the Seychelles archipelago in May 2014, on the occasion of the 60th birthday of David Block and the millionth (base two) birthday of Bruce Elmegreen.
| Author | : R. S. de Jong |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 605 |
| Release | : 2007-05-24 |
| Genre | : Science |
| ISBN | : 1402055730 |
Download Island Universes Book in PDF, ePub and Kindle
This book contains an up-to-date review of the structure and evolution of disk galaxies from both the observational and theoretical point of view. It is the proceedings of the "Island Universes" conference held at the island of Terschelling in July 2005. It brings together a broad range of aspects of disk galaxies: structure and dynamics, the latest multi-wavelength surveys, low- and high redshift observations, theory and observations.
| Author | : Marc Sauvage |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 563 |
| Release | : 2013-06-29 |
| Genre | : Science |
| ISBN | : 9401733112 |
Download The Evolution of Galaxies Book in PDF, ePub and Kindle
Galaxies have a history. This has become clear from recent sky surveys which have shown that distant galaxies, formed early in the life of the Universe, differ from the nearby ones. New observational windows at ultraviolet, infrared and millimetric wavelengths (provided by ROSAT, IRAM, IUE, IRAS, ISO) have revealed that galaxies contain a wealth of components: very hot gas, atomic hydrogen, molecules, dust, dark matter ... A significant advance is expected due to new instruments (VLT, FIRST, XMM) which will allow one to explore the most distant Universe. Three Euroconferences have been planned to punctuate this new epoch in galactic research, bringing together specialists in various fields of Astronomy.
| Author | : Ivan R. King |
| Publisher | : |
| Total Pages | : 376 |
| Release | : 1994 |
| Genre | : Science |
| ISBN | : |
Download Physics of the Gaseous and Stellar Disks of the Galaxy Book in PDF, ePub and Kindle
| Author | : Andrea Cimatti |
| Publisher | : |
| Total Pages | : 588 |
| Release | : 2019-10-31 |
| Genre | : Science |
| ISBN | : 1108770525 |
Download Introduction to Galaxy Formation and Evolution Book in PDF, ePub and Kindle
A comprehensive examination of nearly fourteen billion years of galaxy formation and evolution, from primordial gas to present-day galaxies.
| Author | : Anita Zanella |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Structural Properties of Clumpy Galaxies and Spheroids at High Redshift Book in PDF, ePub and Kindle
This thesis explores the still unanswered question of how distant galaxies evolve through cosmic time: on one side it focuses on star-forming clumpy galaxies, on the other it investigates the size evolution of passive compact ones. Despite star forming clumps have been observed in high-redshift irregular galaxies since a while, their nature and fate are still highly debated. Violent gravitational disk instability in gas-rich, turbulent galaxies has been proposed as the main cause for in-situ clumps formation, although a fraction of them might have an ex-situ origin. Furthermore, clumps contribution to galaxy evolution is highly debated: it is not clear yet if they are long-lived or if stellar feedback rapidly disrupts them. From both the in-depth study of an extremely young clump that we discovered in the disk of a galaxy at redshift z ~ 2, and the analysis of a full statistical sample, I concluded that at least some clumps form in-situ due to violent disk instability and that they typically live ~ 500 Myr. This supports numerical simulations indicating that clumps are longlived and could play an important role in bulge growth. This might stabilize the disk, quench star formation and have therefore a link with the formation of the compact and passive galaxies that have been observed at high redshift. They have significant smaller sizes, at fixed stellar mass, than local counterparts. This discovery has ignited an important debate concerning the possible mechanisms that could inflate the galaxy sizes without altering much their mass. I analyzed a sample of 32 galaxies and I concluded that multiple minor mergers could be the main drivers of their observed time evolution.
| Author | : José G. Funes (S. J) |
| Publisher | : |
| Total Pages | : 740 |
| Release | : 2001 |
| Genre | : Science |
| ISBN | : |
Download Galaxy Disks and Disk Galaxies Book in PDF, ePub and Kindle
Annotation Proceedings of a meeting sponsored by the Vatican Observatory and held at Pontifical Gregorian U., Rome, in June 2000. The conference included some 230 participants from 30 countries and covered topics related to the structure, formation, and evolution of galaxies with disks. Topics include the stellar and gaseous disk of the Milky Way; the global characteristics of galaxy disks; their structure, morphology, and dynamics; the gaseous components, star formation, and chemical evolution; the interactions, accretions, mergers, and starbursts; the dark and luminous matter; the establishment of the scaling laws; and the formation and evolution of disk galaxies from theoretical and observational points of view. Annotation c. Book News, Inc., Portland, OR (booknews.com)
| Author | : Xiaolei Zhang |
| Publisher | : Walter de Gruyter GmbH & Co KG |
| Total Pages | : 338 |
| Release | : 2017-12-04 |
| Genre | : Science |
| ISBN | : 3110527421 |
Download Dynamical Evolution of Galaxies Book in PDF, ePub and Kindle
This research monograph presents a new dynamical framework for the study of secular morphological evolution of galaxies along the Hubble sequence. Classical approaches based on Boltzmann’s kinetic equation, as well as on its moment-equation descendants the Euler and Navier-Stokes fluid equations, are inadequate for treating the maintenance and long-term evolution of systems containing self-organized structures such as galactic density-wave modes. A global and synthetic approach, incorporating correlated fluctuations of the constituent particles during a nonequilibrium phase transition, is adopted to supplement the continuum treatment. The cutting-edge research combining analytical, N-body simulational, and observational aspects, as well as the fundamental-physics connections it provides, make this work a valuable reference for researchers and graduate students in astronomy, astrophysics, cosmology, many-body physics, complexity theory, and other related fields. Contents Dynamical Drivers of Galaxy Evolution N-Body Simulations of Galaxy Evolution Astrophysical Implications of the Dynamical Theory Putting It All Together Concluding Remarks Appendix: Relation to Kinetics and Fluid Mechanics
| Author | : Polychronis Papaderos |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 347 |
| Release | : 2012-04-23 |
| Genre | : Science |
| ISBN | : 3642220185 |
Download Dwarf Galaxies: Keys to Galaxy Formation and Evolution Book in PDF, ePub and Kindle
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.
