High Velocity Clouds And Superbubbles In Nearby Disk Galaxies
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High Velocity Clouds And Superbubbles In Nearby Disk Galaxies
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Author : Eric Robert Schulman
language : en
Publisher:
Release Date : 1995
High Velocity Clouds And Superbubbles In Nearby Disk Galaxies written by Eric Robert Schulman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Disks (Astrophysics) categories.
High Velocity Clouds
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Author : Hugo van Woerden
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-28
High Velocity Clouds written by Hugo van Woerden and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-28 with Science categories.
On the occasion of the retirement of Ulrich Schwarz, a symposium was held in Groningen in May of 1996, celebrating his contributions to the study of the int- stellar medium, including his work on the high-velocity clouds. The coming together of many specialists in the latter ?eld prompted the idea of compiling a book c- taining their contributions, and summarizing the status of our understanding of the high-velocity cloud phenomenon. This seemed especially worthwhile at the time, since many exciting developments were taking place. After the discovery of some H i clouds with high velocities, about 40 years ago, the subject had been dominated by 21-cm observations of H i emission. Starting in the mid-1980s much progress was being made because of the availability of new instruments, such as large ground-based optical telescopes and UV observatories in space. The connections between the work on high-velocity clouds and other studies of the properties of the (hot) interstellar medium also became clearer.
On The Collision Of High Velocity Clouds With A Galactic Disk
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Author :
language : en
Publisher:
Release Date : 1986
On The Collision Of High Velocity Clouds With A Galactic Disk written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
Giant Molecular Clouds In The Galaxy
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Author : Philip M. Solomon
language : en
Publisher: Pergamon
Release Date : 1980
Giant Molecular Clouds In The Galaxy written by Philip M. Solomon and has been published by Pergamon this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Science categories.
Neutral Hydrogen In Nearby Spiral Galaxies Holes And High Velocity Clouds Door Jurjen Jan Kamphuis
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Author : Jurjen Jan Kamphuis
language : en
Publisher:
Release Date : 1993
Neutral Hydrogen In Nearby Spiral Galaxies Holes And High Velocity Clouds Door Jurjen Jan Kamphuis written by Jurjen Jan Kamphuis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Interstellar hydrogen categories.
The Galaxy Disk In Cosmological Context Iau S254
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Author : International Astronomical Union. Symposium
language : en
Publisher: Cambridge University Press
Release Date : 2009-04-16
The Galaxy Disk In Cosmological Context Iau S254 written by International Astronomical Union. Symposium and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-04-16 with Science categories.
The paradigm of a dark energy- and dark matter-dominated Universe, with the hierarchical merger scenario for the formation of galaxies, has scored impressive successes in matching the observed Universe. However, the theory fails to explain the difficulty in generating ordinary disk galaxies such as the Milky Way, suggesting that some important physics must be missing in current models. IAU Symposium 254 was organized to address this question, gathering researchers from an unusually broad range of fields, from cosmology to interstellar matter, and the formation and evolution of stars. High-class reviews, lectures and posters combine to define the frontiers in the field and point the way to new avenues of research. This volume presents a unique set of succinct overviews illuminating the full range of topics in this very active field. It also honors Danish astrophysicist Bengt Strömgren (1908-1987), who laid much of the foundation for this entire field.
From Observations To Self Consistent Modelling Of The Ism In Galaxies
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Author : Miguel A. de Avillez
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
From Observations To Self Consistent Modelling Of The Ism In Galaxies written by Miguel A. de Avillez and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Research of the interstellar medium (ISM) has been advancing rapidly during the last 10 years, mainly due to immensely improved observational facilities and techniques in all wavelength ranges. We are now able to investigate the ISM in external galaxies and even the intergalactic and intracluster medium in great detail. Increased spatial and spectral resolution have provided us with a great deal of information on the interstellar gas in its various phases, the magnetic field and the cosmic rays, and of course, also the stellar component, which is the driving agent of the interstellar matter cycle. Since only fairly recently, a sufficient amount of computing power has become available to tackle these problems with some prospect of obtaining a self-consistent picture of the ISM, a major goal of this workshop was to bring together observers and theoreticians sufficiently close, so that intense discussions about the necessities and desiderata of modelling the ISM could be stimulated. Observers have shown in great detail on this conference of what is seen on all scales of the ISM, near and far, and what boundary conditions would be appropriate for realistic models, and theoreticians pointed out what assumptions and simplifications their codes need, and how future observations could test their models. As a first step towards this goal, some self-consistent numerical simulations with a minimum number of relevant physical processes were also presented on this meeting. There was wide agreement, that this approach - to keep observers and theoreticians in close contact and also in sometimes quite controversial discussions - will bear fruitful results in the near future.
High Velocity Cloud Interactions With Their Ambient Environment
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Author : Jeffrey Alan Gritton
language : en
Publisher:
Release Date : 2017
High Velocity Cloud Interactions With Their Ambient Environment written by Jeffrey Alan Gritton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
High velocity clouds (HVCs) are collections of gas around the Milky Way galaxy and other galaxies with masses ranging from tens of thousands of solar masses to millions of solar masses. These cool clouds can potentially supply new cool material to the disks of galaxies. Many unanswered questions exist about HVCs; e.g. "How do HVCs form?", "How long can HVCs survive while interacting with the hot ambient material?", and "How do HVCs affect, and how are they affected by, our Galaxy?" Using detailed multi-dimensional numerical simulations, this study focuses on how HVCs interact with their ambient environments and how these interactions affect the cloud's metal concentration, condensation and evaporation rates, and morphology. Using the results of these simulations this study suggests methods to determine the origins of HVCs based on observed metal concentrations, and how initial parameter space affects the condensation of ambient material onto HVCs.
Fluid Dynamics And Dynamos In Astrophysics And Geophysics
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Author : Andrew M. Soward
language : en
Publisher: CRC Press
Release Date : 2005-03-16
Fluid Dynamics And Dynamos In Astrophysics And Geophysics written by Andrew M. Soward and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-03-16 with Science categories.
The increasing power of computer resources along with great improvements in observational data in recent years have led to some remarkable and rapid advances in astrophysical fluid dynamics. The subject spans three distinct but overlapping communities whose interests focus on (1) accretion discs and high-energy astrophysics; (2) solar, stellar, and
Soft X Ray Emission From Clusters Of Galaxies And Related Phenomena
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Author : R. Lieu
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-09
Soft X Ray Emission From Clusters Of Galaxies And Related Phenomena written by R. Lieu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-09 with Science categories.
Since the discovery of the cluster soft excess (CSE) over eight years ago, its properties and origin have been the subject of debate. With the recent launch of new missions such as XMM-Newton and FUSE, we are beginning to answer some of the complex issues regarding the phenomenon. This conference proceedings is an attempt to bring together the latest research results and covers both observational and theoretical work on the CSE and related topics. One of the main topics is the possible relationship between the CSE and the warm-hot intergalactic medium (WHIM), which is believed to harbor 50% of the baryons in the near Universe. New data from both XMM-Newton and FUSE have indicated a possible causal link between the WHIM and CSE. Evidence is based on the apparent detection of O VII emission lines in the soft excess spectrum of the outskirts of several clusters, as well as reports of absorption lines at local and higher redshifts (seen in the spectra of distant sources) as signature of the WHIM. However, while there has been considerable optimism in attributing a substantial fraction of the cluster soft excess flux to WHIM emission, other work shows that, for example, the amount of WHIM material predicted by theoretical simulations falls way short of that necessary to account for the CSE. Other work indicates that at the cores of some cluster this excess emission is so strong, it is impossible to invoke the thermal model without at the same time enlisting radically new physics. Thus alternative interpretations involving non-thermal processes are also reported and being pursued in earnest. Whatever the origin of CSE may turn out to be, results in this book show that it has become beyond reasonable doubt that the phenomenon itself is observationally established. This book reports the scientific progress made by bringing together scientists from a wide range of disciplines. It clearly demonstrates the importance of such meetings and participants if we are to solve this puzzle. This volume is aimed at scientists and graduate students in astronomy who want to learn about the latest results on cluster soft excess observations and theoretical implications.