Global Studies Of Molecular Clouds In The Galaxy The Magellanic Cloud And M31

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 26 pages
File Size : 48,7 Mb
Release : 2018-06-16
Category : Electronic
ISBN : 1721195599

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Global Studies of Molecular Clouds in the Galaxy, the Magellanic Clouds, and M31 by National Aeronautics and Space Administration (NASA) Pdf

Over the course of this grant we used various spacecraft surveys of the Galaxy and M31 in conjunction with our extensive CO spectral line surveys to address central problems in galactic structure and the astrophysics of molecular clouds. These problems included the nature of the molecular ring and its relation to the spiral arms and central bar, the cosmic ray distribution, the origin of the diffuse X-ray background, the distribution and properties of x-ray sources and supernova remnants, and the Galactic stellar mass distribution. For many of these problems, the nearby spiral M31 provided an important complementary perspective. Our CO surveys of GMCs (Galactic Molecular Clouds) were crucial for interpreting Galactic continuum surveys from satellites such as GRO (Gamma Ray Observatory), ROSAT (Roentgen Satellite), IRAS (Infrared Astronomy Satellite), and COBE (Cosmic Background Explorer Satellite) because they provided the missing dimension of velocity or kinematic distance. GMCs are a well-defined and widespread population of objects whose velocities we could readily measure throughout the Galaxy. Through various emission and absorption mechanisms involving their gas, dust, or associated Population I objects, GMCs modulate the galactic emission in virtually every major wavelength band. Furthermore, the visibility. of GMCs at so many wavelengths provided various methods of resolving the kinematic distance ambiguity for these objects in the inner Galaxy. Summaries of our accomplishments in each of the major wavelength bands discussed in our original proposal are given Thaddeus, Patrick Goddard Space Flight Center

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 28 pages
File Size : 45,6 Mb
Release : 2018-12-30
Category : Electronic
ISBN : 1792626215

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Global Studies of Molecular Clouds in the Galaxy, the Magellanic Cloud and M31 by National Aeronautics and Space Adm Nasa Pdf

Over the past five years we have used our extensive CO surveys of the Galaxy and M31 in conjunction with spacecraft observations to address central problems in galactic structure and the astrophysics of molecular clouds. These problems included the nature of the molecular ring and its relation to the spiral arms and central bar, the cosmic ray distribution, the origin of the diffuse X-ray background, the distribution and properties of x-ray sources and supernova remnants, and the Galactic stellar mass distribution. For many of these problems, the nearby spiral M31 provided an important complementary perspective. Thaddeus, Patrick NAGw-3164...

Author : Marc Leslie Kutner
Publisher : Cambridge University Press
Page : 612 pages
File Size : 51,7 Mb
Release : 2003-07-31
Category : Science
ISBN : 0521529271

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Astronomy: A Physical Perspective by Marc Leslie Kutner Pdf

This fully revised and updated text is a comprehensive introduction to astronomical objects and phenomena. By applying some basic physical principles to a variety of situations, students will learn how to relate everyday physics to the astronomical world. Starting with the simplest objects, the text contains explanations of how and why astronomical phenomena occur, and how astronomers collect and interpret information about stars, galaxies and the solar system. The text looks at the properties of stars, star formation and evolution; neutron stars and black holes; the nature of galaxies; and the structure of the universe. It examines the past, present and future states of the universe; and final chapters use the concepts that have been developed to study the solar system, its formation; the possibility of finding other planetary systems; and the search for extraterrestrial life. This comprehensive text contains useful equations, chapter summaries, worked examples and end-of-chapter problem sets.

Author : International Astronomical Union. Symposium
Publisher : Springer Science & Business Media
Page : 546 pages
File Size : 44,6 Mb
Release : 1990-08-31
Category : Science
ISBN : 0792308417

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The Galactic and Extragalactic Background Radiation by International Astronomical Union. Symposium Pdf

Proceedings of the 139th Symposium of the International Astronomical Union on `The Galactic and Extragalactic Background Radiation, held in Heidelberg, FRG, June 12-16, 1989

Author : F. Combes,F. Casoli
Publisher : Springer Science & Business Media
Page : 514 pages
File Size : 54,8 Mb
Release : 1991-01-31
Category : Science
ISBN : 0792310969

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Dynamics of Galaxies and Their Molecular Cloud Distributions by F. Combes,F. Casoli Pdf

Proceedings of the 146th Symposium of the International Astronomical Union, held in Paris, France, June 4-9, 1990

Author : Andrew Layden,R. Chris Smith,Jesper Storm
Publisher : Unknown
Page : 290 pages
File Size : 47,6 Mb
Release : 1994
Category : Nature
ISBN : UVA:X004306552

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Third CTIO/ESO Workshop on the Local Group by Andrew Layden,R. Chris Smith,Jesper Storm Pdf

Author : Anonim
Publisher : Unknown
Page : 706 pages
File Size : 50,6 Mb
Release : 1982
Category : Aeronautics
ISBN : UOM:39015057265707

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International Aerospace Abstracts by Anonim Pdf

Author : Chi Yuan,Junhan You
Publisher : World Scientific
Page : 328 pages
File Size : 41,7 Mb
Release : 1995-11-16
Category : Electronic
ISBN : 9789814550499

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Molecular Clouds and Star Formation by Chi Yuan,Junhan You Pdf

This volume is composed of four major in-depth yet pedagogic review chapters on the subject of star formation, written by the foremost researchers in the field. Recent infrared and millimeter radio observations are respectively reviewed by Charlie Lada and Phil Myers, both of Harvard–Smithsonian Center for Astrophysics. The theoretical work is reviewed by Frank Shu of UC-Berkeley on the gravitational collapse of dense cores in a giant molecular cloud to form sunlike stars and Bruce Elmegreen of IBM–Watson on the gravitational instability, leading to large-scale star formation. They have written at a level most suitable for graduate students or young researchers who want to develop their research interest in the field, with the most complete literature survey to date. This volume is not an ordinary conference proceedings, but a textbook to be used in graduate study in astrophysics. The volume also includes other short and interesting contributions from Doug Lin of UC-Santa Cruz, Paul Ho of Harvard–Smithsonian, Masa Hayashi of Tokyo University, Debra Elmegreen of Vassar, Jing-Yao Hu of Beijing Observatory, Guo-Xuan Sung of Shanghai Observatory, Chi Yuan of CCNY and ASIAA, and Wen-Ping Chen of Central University, Taiwan. Contents:The Formation and Early Evolution of Stars: An Observational Perspective (C J Lada)Star Forming Molecular Clouds (P C Myers)The Birth of Sunlike Stars (F H Shu)Star Formation on a Large Scale (B G Elmegreen)Herbig Ae/Be Stars (J-Y Hu)Observations of Circumstellar Disks with Millimeterwave Molecular Line and Continuum Emissions (M Hayashi)Circumstellar Environments around Young Stars (W-P Chen)The Galactic Center (P Ho)Observations of Large Scale Star-Forming Regions and Density Wave Triggering (D M Elmegreen)Protosteller Disks and the Solar Nebula (D N C Lin)Early Evolution of Planet-Forming Disks (C Yuan)Giant Molecular Clouds and Star Formation on the Galactic Scale (G-X Song) Readership: Graduate students and research scientists in astronomy and astrophysics. keywords:

Author : Jay M. Pasachoff,Alex Filippenko
Publisher : Cambridge University Press
Page : 629 pages
File Size : 46,5 Mb
Release : 2014
Category : Science
ISBN : 9781107687561

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The Cosmos by Jay M. Pasachoff,Alex Filippenko Pdf

An exciting introduction to astronomy, using recent discoveries and stunning photography to inspire non-science majors about the Universe and science.

Author : Yoshiaki Sofue
Publisher : Springer
Page : 229 pages
File Size : 46,7 Mb
Release : 2017-06-05
Category : Science
ISBN : 9789811034459

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Galactic Radio Astronomy by Yoshiaki Sofue Pdf

This book is a concise primer on galactic radio astronomy for undergraduate and graduate students, and provides wide coverage of galactic astronomy and astrophysics such as the physics of interstellar matter and the dynamics and structure of the Milky Way Galaxy and galaxies. Radio astronomy and its technological development have led to significant progress in galactic astronomy and contributed to understanding interstellar matter and galactic structures. The book begins with the fundamental physics of radio-wave radiation, i.e., black body radiation, thermal emission, synchrotron radiation, and HI and molecular line emissions. The author then gives overviews of ingredients of galactic physics, including interstellar matter such as the neutral (HI), molecular hydrogen, and ionized gases, as well as magnetic fields in galaxies. In addition, more advanced topics relevant to the Galaxy and galaxies are also contained here: star formation, supernova remnants, the Galactic Center and black holes, galactic dynamics and dark-matter halos, magnetism of galaxies, interstellar gases in galaxies, and starbursts. A unique feature of this book is its focus on how to analyze and interpret radio astronomical observation data and how to describe the underlying physics from such data. A wealth of figures and images will be a great help for undergraduate and graduate students to understand the contents. Furthermore, the well-summarized contents of theory and observation will appeal to young researchers as well.

Author : John Mason
Publisher : Springer Science & Business Media
Page : 408 pages
File Size : 44,6 Mb
Release : 2006-08-29
Category : Science
ISBN : 9783540303138

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Astrophysics Update 2 by John Mason Pdf

"Astrophysics Updates" is intended to serve the information needs of professional astronomers and postgraduate students about areas of astronomy, astrophysics and cosmology that are rich and active research spheres. Observational methods and the latest results of astronomical research are presented as well as their theoretical foundations and interrelations. The contributed commissioned articles are written by leading exponents in a format that will appeal to professional astronomers and astrophysicists who are interested in topics outside their own specific areas of research. This collection of timely reviews may also attract the interest of advanced amateur astronomers seeking scientifically rigorous coverage.

Author : International Astronomical Union. Symposium
Publisher : Springer Science & Business Media
Page : 568 pages
File Size : 45,9 Mb
Release : 1986-06-30
Category : Science
ISBN : 9027722730

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Luminous Stars and Associations in Galaxies by International Astronomical Union. Symposium Pdf

Proceedings of the 116th Symposium of the International Astronomical Union, held at Porto Heli, Greece, May 26-31, 1985

Author : Anonim
Publisher : Unknown
Page : 1460 pages
File Size : 49,8 Mb
Release : 1991
Category : Aeronautics
ISBN : UIUC:30112001077426

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Scientific and Technical Aerospace Reports by Anonim Pdf

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author : S. Böhme,U. Esser,H. Hefele,I. Heinrich,W. Hofmann,D. Krahn,V. R. Matas,L. D. Schmadel,G. Zech
Publisher : Springer Science & Business Media
Page : 1300 pages
File Size : 50,8 Mb
Release : 2013-11-11
Category : Science
ISBN : 9783662123584

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Literature 1987, Part 1 by S. Böhme,U. Esser,H. Hefele,I. Heinrich,W. Hofmann,D. Krahn,V. R. Matas,L. D. Schmadel,G. Zech Pdf

Astronomy and Astrophysics Abstracts aims to present a comprehensive documen tation of the literature concerning all aspects of astronomy, astrophysics, and their border fields. It is devoted to the recording, summarizing, and indexing of the relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union. Volume 43 records literature published in 1987 and received before August 15, 1987. Some older documents which we received late and which are not surveyed in earlier volumes are included too. We acknowledge with thanks contributions of our colleagues all over the world. We also express our gratitude to all organiza tions, observatories, and publishers which provide us with complimentary copies of their publications. Starting with Volume 33, all the recording, correction, and data processing work was done by means of computers. The recording was done by our technical staff members Ms. Helga Ballmann, Ms. Beate Gobel, Ms. Monika Kohl, Ms. Sylvia Matyssek, Ms. Doris Schmitz-Braunstein, Ms. Utta-Barbara Stegemann. Mr. Jochen Heidt and Mr. Kristopher Polzine supported our task by careful proof reading. It is a pleasure to thank them all for their encouragement. Heidelberg, October 1987 The Editors Contents Introduction . . . . . . . . . . . 1 Concordance Relation: PHYS-AAA 3 Abbreviations 5 Periodicals, Proceedings, Books, Activities 001 Periodicals . . . . . . . . . . . 10 002 Bibliographical Publications, Documentation, Catalogues, Data Bases 50 003 Books ...... .

Author : Anonim
Publisher : Unknown
Page : 742 pages
File Size : 54,9 Mb
Release : 1989
Category : Astronomy
ISBN : STANFORD:36105005279299

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Astronomy and Astrophysics Monthly Index by Anonim Pdf