Download or read book Molecular Jets and Outflows from Young Stellar Objects in Cygnus X Auriga and Cassiopeia written by Sally Victoria Makin and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Line Studies of Dark Clouds with Associated Young Stellar Objects written by Paul Nachman and published by . This book was released on 1978 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Star Formation in Cygnus X written by Soumen Deb and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In astrophysics, stellar evolution is one of the most discussed topics. Although a significant amount of research and advancement of instrumentation over the last few decades have contributed to this field greatly, our understanding of the pre-main sequence evolution remains largely incomplete. The general model for the formation of protostars within the ISM is the virial instability in cold molecular gas resulting in spontaneous gravitational collapse. However, the complete understanding of this instability requires a set of other physical factors, including the hydrodynamic turbulence in the ISM, local magnetic field strength, and feedback from surrounding high-mass stars, not all of them are well-understood. This work investigates the effect of stellar feedback on local star formation and the extent of energy support for molecular clouds provided by protostellar outflows within them. I first look into a specific case of potentially triggered star formation in Cygnus X, being one of the most active star-forming regions in the Milky Way. Using multi-line submillimetre emissions as well as radio continuum and infrared data, I measure the properties of two highly energetic molecular outflows near the massive stellar complex Cygnus OB2 complex. I show structure, physical conditions, and timescale of the outflows and the associated photoionized rim are consistent with a triggering scenario. I further investigate 13 such molecular outflows in Cygnus X and measure their properties using multi-line data which I find are similar to the previous surveys of outflows throughout the galaxy. Additionally, I develop and test a method to measure the same properties using single spectral line emission. This is useful in surveys where optically thin line data are not available. Next, I implement our method to estimate outflow properties in a large-scale survey of 82 outflows, many of which were previously unknown, based on single spectral-line observations. I use machine learning to fill out missing information on protostellar luminosity using existing catalogues and investigate the comparative predictive powers of line emission and radio continuum data on local outflow formation. Next, by comparing outflow power to turbulent dissipation power I show that single-generational outflows cannot provide enough energy support for the surrounding molecular clouds. Finally, I search for evidence of large-scale triggering of star formation and find that an ionization front can perhaps trigger local star formation where molecular gas emission is high, however, find no evidence for this effect to be strong.
Download or read book Outflows from Massive Young Stellar Objects written by Carlos A. Alvarez and published by . This book was released on 2002 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Star Formation in the Taurus Auriga Cloud written by Michelle Thaller and published by . This book was released on 1991 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stellar Jets and Molecular Outflows written by Stephen John Bence and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jets and Outflows from Young Stars written by Mohanty Subhanjoy and published by . This book was released on 1995 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Origin of Stars written by Michael David Smith and published by Imperial College Press. This book was released on 2004 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whre do stars come from and how do they form? These are profound questions which link the nature of our Universe to the roots of mankind. Yet, until a recent revolution in understanding, the proposed answers have been raw speculation. Now, accompanying penetrating observations, a new picture has come into prominence. This book presents the latest astounding observations and scientific ideas covering star formation, star birth and early development. It encompasses all aspects, from the dramatic stories of individual objects, to the collective influence of entire stellar systems. The very first stars to come into existence and the nurturing of planets are discussed to provide the reader with a comprehensive overview. Presenting background information with only the essential mathematics, this book will appeal to scientists wishing to expand their horizons, students seeking solid foundations, and general readers with enquiring minds.
Download or read book Fundamental Astronomy written by Hannu Karttunen and published by Springer Science & Business Media. This book was released on 2007-08-09 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental Astronomy is a well-balanced, comprehensive introduction to classical and modern astronomy. While emphasizing both the astronomical concepts and the underlying physical principles, the text provides a sound basis for more profound studies in the astronomical sciences. This is the fifth edition of the successful undergraduate textbook and reference work. It has been extensively modernized and extended in the parts dealing with extragalactic astronomy and cosmology. You will also find augmented sections on the solar system and extrasolar planets as well as a new chapter on astrobiology. Long considered a standard text for physical science majors, Fundamental Astronomy is also an excellent reference work for dedicated amateur astronomers.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1987 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Our Universe Third Edition written by Stacy Palen and published by . This book was released on 2018 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Multimessenger Astronomy written by Miroslav D.. Filipović and published by Programme: Aas-Iop Astronomy. This book was released on 2021 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy has traditionally relied on capturing photons from cosmic sources to be able to understand the Universe. During the 20th and 21st centuries, different messengers have been added to the astronomer's toolset : cosmic rays, neutrinos, and most recently gravitational waves. Each of these messengers opens a new window on the Universe, and a modern astronomer must be familiar with them. As multimessenger astronomy becomes part of the mainstream, each messenger must be understood not only as its own astronomical domain, but as part of a whole endeavour. A broad understanding of these messengers and their relationship to each other is the main goal of this book. The unique physics of each messenger is introduced, as well as the physics of their detection and interpretation. An additional focus is the discussion of techniques and topics that are common to more than one messenger. Treatments of historical background, the effect of the Earth's atmosphere, the transfer of radiation and measurement techniques are aimed at giving the reader a broad understanding of this new way of observing the cosmos. Principles of multimessenger astronomy is designed to be both an introduction and reference to modern astronomy.
Download or read book Classifying the Cosmos written by Steven J. Dick and published by Springer. This book was released on 2019-03-21 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the invention of the telescope 400 years ago, astronomers have rapidly discovered countless celestial objects. But how does one make sense of it all? Astronomer and former NASA Chief Historian Steven J. Dick brings order to this menagerie by defining 82 classes of astronomical objects, which he places in a beginner-friendly system known as "Astronomy’s Three Kingdoms.” Rather than concentrating on technicalities, this system focuses on the history of each object, the nature of its discovery, and our current knowledge about it. The ensuing book can therefore be read on at least two levels. On one level, it is an illustrated guide to various types of astronomical wonders. On another level, it is considerably more: the first comprehensive classification system to cover all celestial objects in a consistent manner. Accompanying each spread are spectacular historical and modern images. The result is a pedagogical tour-de-force, whereby readers can easily master astronomy’s three realms of planets, stars, and galaxies.
Download or read book The Milky Way as a Galaxy written by Gerry Gilmore and published by . This book was released on 1990 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive view of Galactic astronomy, written from a global point of view. The three authors have collaborated to produce a new synthesis of the forefront of knowledge about our Galaxy - what it is, what is in it, and how it might have come to be that way. The book consists of 16 chapters that cover the structure and dynamics of the Milky Way; the nature, distribution, and possible origin of its various populations; and its relationship to other galaxies. The level of the book is suitable for working astronomers, graduate students, advanced undergraduates, and knowledgeable amateurs.
Download or read book Cambridge Illustrated Dictionary of Astronomy written by Jacqueline Mitton and published by Cambridge University Press. This book was released on 2007-12-20 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lavishly illustrated new dictionary written by an experienced writer and consultant on astronomy provides an essential guide to the universe for amateur astronomers of all ages. Around 1300 carefully selected and cross-referenced entries are complemented by hundreds of beautiful colour illustrations, taken from space missions, the Hubble Space Telescope, and other major observatories on Earth and in space. Distinguished stellar illustrator Wil Tirion has drawn 20 new star maps especially for inclusion here. A myriad of named astronomical objects, constellations, observatories and space missions are described in detail, as well as biographical sketches for 70 of the most luminous individuals in the history of astronomy and space science. Acronyms and specialist terms are clearly explained, making for the most thorough and carefully assembled reference resource that teachers and enthusiasts of astronomy will ever need.
Download or read book Astronomy Encyclopedia written by Patrick Moore and published by Oxford University Press, USA. This book was released on 2002 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supporting these articles are shorter entries on planetary features and satellites, asteroids, observational techniques, comets, satellite launchers, meteors, and subjects as diverse as software for astronomy and the structure of meteorites."--BOOK JACKET.
Download or read book Binocular Astronomy written by Craig Crossen and published by . This book was released on 1992 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Instructs the reader on how to observe celestial bodies in the night sky with binoculars.
