Burning Dust In Star Forming Galaxies
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Burning Dust in Star Forming Galaxies
Author | : L. Young Joshua |
Publsiher | : Unknown |
Total Pages | : 0 |
Release | : 2023-10-06 |
Genre | : Science |
ISBN | : 856225097X |
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This book explores the critical need for a comprehensive census of supermassive black holes in the local universe, particularly within low mass galaxies. Supermassive black holes play a crucial role in the co-evolution of active galactic nuclei (AGN) and their host galaxies. To uncover these elusive entities, infrared selection criteria, such as the [3.4]-[4.6] m (W1-W2) color, offer a valuable method for detecting obscured AGN that might remain hidden in X-ray or optical surveys. Recent research has revealed a surprising abundance of AGN in low mass galaxies, challenging traditional optical selection criteria. Furthermore, it suggests a substantial population of obscured AGN, particularly in low mass galaxies. However, the nature of the dust heating that leads to high W1-W2 color remains a question
Star Formation Galaxies and the Interstellar Medium
Author | : Jose Franco,Federico Ferrini,G. TENORIO-TAGLE (Ed) |
Publsiher | : Cambridge University Press |
Total Pages | : 418 |
Release | : 1993-06-10 |
Genre | : Science |
ISBN | : 0521444128 |
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The enormously powerful phenomena of starbursts are examined in this book. These spectacular star-forming events are seen on large scales in some galaxies, often triggered by galactic interactions. An intriguing implication of starburst research is that active galactic nuclei (AGN) may not be powered by accreting black holes. Instead theories are presented where compact powerhouses of dust-enshrouded star formation lie at the core of AGN, with supernovae exploding roughly once per year within massive nuclear concentrations of gas. This book collects articles from a timely international conference in Elba, Italy, in 1992; these comprise a thorough review of the most important developments in galactic-scale star formation since the starburst revolution of the late 1980s. This text will introduce graduate students to this exciting area and keep experts apace with rapid developments in it.
Dust in Galaxies
Author | : David A Williams,Cesare Cecchi-Pestellini |
Publsiher | : Royal Society of Chemistry |
Total Pages | : 162 |
Release | : 2019-12-12 |
Genre | : Science |
ISBN | : 9781788019255 |
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Without interstellar dust, the Universe as we see it today would not exist. Yet at first we considered this vital ingredient merely an irritating fog that prevented a clear view of the stars and nebulae in the Milky Way and other galaxies. We now know that interstellar dust has essential roles in the physics and chemistry of the formation of stars and planetary systems, the creation of the building blocks of life, and in the movement of those molecules to new planets. This is the story in this book. After introducing the materials this interstellar dust is made of, the authors explain the range of sizes and shapes of the dust grains in the Milky Way galaxy and the life cycle of dust, starting from the origins of dust grains in stellar explosions through to their turbulent destruction. Later on we see the variety of processes in interstellar space involving dust and the events there that cause the dust to change in ways that astronomers and astrobiologists can use to indirectly observe those events. This book is written for a general audience, concentrating on ideas rather than detailed mathematics and chemical formulae, and is the first time interstellar dust has been discussed at an accessible level.
Star Formation in Galaxies
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 810 |
Release | : 1987 |
Genre | : Astrophysics |
ISBN | : UCAL:C3194906 |
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Helium burning Stars and the Star formation Histories of Dwarf Galaxies
Author | : Andrew A. Cole |
Publsiher | : Unknown |
Total Pages | : 540 |
Release | : 1999 |
Genre | : Dwarf galaxies |
ISBN | : WISC:89072044175 |
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Galaxy Formation
Author | : Malcolm Longair |
Publsiher | : Springer Science & Business Media |
Total Pages | : 1481 |
Release | : 2007-12-12 |
Genre | : Science |
ISBN | : 9783540734772 |
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Delineating the huge strides taken in cosmology in the past ten years, this much-anticipated second edition of Malcolm Longair's highly appreciated textbook has been extensively and thoroughly updated. It tells the story of modern astrophysical cosmology from the perspective of one of its most important and fundamental problems – how did the galaxies come about? Longair uses this approach to introduce the whole of what may be called "classical cosmology". What’s more, he describes how the study of the origin of galaxies and larger-scale structures in the Universe has provided us with direct information about the physics of the very early Universe.
Galaxy Formation
Author | : Malcolm S. Longair |
Publsiher | : Springer Nature |
Total Pages | : 784 |
Release | : 2023-04-10 |
Genre | : Science |
ISBN | : 9783662658918 |
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Delineating the huge strides taken in cosmology in the past ten years, this much-anticipated second edition of Malcolm Longair's highly appreciated textbook has been extensively and thoroughly updated. It tells the story of modern astrophysical cosmology from the perspective of one of its most important and fundamental problems – how did the galaxies come about? Longair uses this approach to introduce the whole of what may be called "classical cosmology". What’s more, he describes how the study of the origin of galaxies and larger-scale structures in the Universe has provided us with direct information about the physics of the very early Universe.
Starbursts Triggers Nature and Evolution
Author | : Bruno Guiderdoni |
Publsiher | : Springer |
Total Pages | : 264 |
Release | : 2013-11-11 |
Genre | : Science |
ISBN | : 9783662297421 |
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Starbursts are regions of unusually rapid star formation, often located in the central parts of galaxies. They differ from more normal regions of star formation in terms of the throughput of mass and the rapidity with which the gas is consumed. In the last twenty years, extensive observational data at most wavelengths have become available on starbursts, but many important issues remain to be addressed, observationally as well as theoretically. How are strong episodes of star formation triggered? What is the quantity of gas converted into stars during bursts? What is the initial mass function of stars in these events? How does the feedback from stars influence the interstellar medium and self-regulate star formation? What is the subsequent chemical and photometric evolution? How do starbursts rule the formation and evolution of galaxies? In recent years, many observational data at different wavelengths (optical, radio, infrared, X-ray) have become available. However, these observations are still fragmentary in the sense that different classes of objects have been observed in different ways, and the coverage is not consistently deep or complete. As a consequence, an overall observational picture of starburst galaxies is missing, and theoretical understanding and modelling have remained highly tentative. The purpose of the school Starbursts: Triggers, Nature, and Evolution was to gather theorists and observers with complementary approaches to the starburst phenomenon, in order to summarize the state-of-the-art of the observations and models, emphasizing the consistency of the various viewpoints.