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Author : Harold Lester Johnson
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Sun as a Variable Star written by Harold Lester Johnson and published by . This book was released on 1959 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert A. Heinlein
Publisher : Macmillan + ORM
ISBN 13 : 1429983450
Total Pages : 475 pages
Book Rating : 4.4/5 (299 download)
Download or read book Variable Star written by Robert A. Heinlein and published by Macmillan + ORM. This book was released on 2010-12-07 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: A never-before-published masterpiece from science fiction's greatest writer, rediscovered after more than half a century. When Joel Johnston first met Jinny Hamilton, it seemed like a dream come true. And when she finally agreed to marry him, he felt like the luckiest man in the universe. There was just one small problem. He was broke. His only goal in life was to become a composer, and he knew it would take years before he was earning enough to support a family. But Jinny wasn't willing to wait. And when Joel asked her what they were going to do for money, she gave him a most unexpected answer. She told him that her name wasn't really Jinny Hamilton---it was Jinny Conrad, and she was the granddaughter of Richard Conrad, the wealthiest man in the solar system. And now that she was sure that Joel loved her for herself, not for her wealth, she revealed her family's plans for him---he would be groomed for a place in the vast Conrad empire and sire a dynasty to carry on the family business. Most men would have jumped at the opportunity. But Joel Johnston wasn't most men. To Jinny's surprise, and even his own, he turned down her generous offer and then set off on the mother of all benders. And woke up on a colony ship heading out into space, torn between regret over his rash decision and his determination to forget Jinny and make a life for himself among the stars. He was on his way to succeeding when his plans--and the plans of billions of others--were shattered by a cosmic cataclysm so devastating it would take all of humanity's strength and ingenuity just to survive. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Author : Judit M. Pap
Publisher : Springer Science & Business Media
ISBN 13 : 9401109508
Total Pages : 321 pages
Book Rating : 4.4/5 (11 download)
Download or read book The Sun as a Variable Star: Solar and Stellar Irradiance Variations written by Judit M. Pap and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IAU Colloquium No. 143 "The Sun as a Variable Star: Solar and Stellar Irradiance Variations" was held on June 20 - 25, 1993 at the Clarion Harvest House, Boulder, Colorado, USA. The main objective of this Colloquium was to review the most recent results on the observations, theoretical interpreta tions, and empirical and physical models of the variations observed in solar and stellar irradiances. A special emphasis of the Colloquium was to discuss the results gained on the climatic impact of solar irradiance variability. The study of changes in solar and stellar irradiances has been of high interest for a long time. Determining the absolute value of the luminosity of stars with different ages is a crucial question for the theory of stellar evolu tion and energy production of stellar interiors. Observations of the temporal changes of solar and stellar irradiances - in the entire spectral band and at different wavelengths - provide an additional tool for studying the physical processes below the photosphere and in the solar- stellar atmospheres. Since the Sun's radiative output is the main driver of the physical processes with in the Earth's atmosphere, the study of irradiance changes is an extremely important issue for climatic studies as well. Climatic models show that small, but persistent changes in solar irradiance may influence the Earth's climate.
Author :
Publisher :
ISBN 13 :
Total Pages : 355 pages
Book Rating : 4.:/5 (35 download)
Download or read book The Sun as a Variable Star written by and published by . This book was released on 1994 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John R. Percy
Publisher : Cambridge University Press
ISBN 13 : 1139463284
Total Pages : 330 pages
Book Rating : 4.1/5 (394 download)
Download or read book Understanding Variable Stars written by John R. Percy and published by Cambridge University Press. This book was released on 2007-05-24 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was first published in 2007. Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration, flares, or cataclysmic explosions. In each case, variable stars provide unique information about the properties of stars, and the processes that go on within them. This book provides a concise overview of variable stars, including a historical perspective, an introduction to stars in general, the techniques for discovering and studying variable stars, and a description of the main types of variable stars. It ends with short reflections about the connection between the study of variable stars, and research, education, amateur astronomy, and public interest in astronomy. This book is intended for anyone with some background knowledge of astronomy, but is especially suitable for undergraduate students and experienced amateur astronomers who can contribute to our understanding of these important stars.
Author : International Astronomical Union. Colloquium
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (755 download)
Download or read book The Sun as a Variable Star written by International Astronomical Union. Colloquium and published by . This book was released on 1993 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David H. Levy
Publisher : Cambridge University Press
ISBN 13 : 9780521627559
Total Pages : 224 pages
Book Rating : 4.6/5 (275 download)
Download or read book Observing Variable Stars written by David H. Levy and published by Cambridge University Press. This book was released on 1998-04-16 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: David Levy's entertaining, well-researched book is aimed at the amateur enthusiast who likes to learn enjoyably. Beginning with advice on binoculars and telescopes, and how to observe the night sky effectively, the author goes on to describe thoroughly the field of variable star observation, a field in which amateurs have made important contributions. He shows how to interpret variations in light output in terms of the life of a star, from birth through to sometimes violent death. All of the major variable stars are described and classified, as well as other variable objects such as active galaxies, asteroids, comets and the sun. The book also contains a guide to the seasonal night sky. Throughout, practical observations serve to complement the text, producing an exciting, very readable introduction to this fascinating subject.
Author : Krzysztof Serkowski
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (339 download)
Download or read book The Sun as a Variable Star II written by Krzysztof Serkowski and published by . This book was released on 1961 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Judit M. Pap
Publisher :
ISBN 13 : 9780792330400
Total Pages : 312 pages
Book Rating : 4.3/5 (34 download)
Download or read book The Sun as a Variable Star written by Judit M. Pap and published by . This book was released on 1994 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Stephen Glasby
Publisher : Constable
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.3/5 (97 download)
Download or read book Variable Stars written by John Stephen Glasby and published by Constable. This book was released on 1969 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Agnes Giberne
Publisher :
ISBN 13 :
Total Pages : 424 pages
Book Rating : 4.:/5 (334 download)
Download or read book The Story of the Sun, Moon, and Stars written by Agnes Giberne and published by . This book was released on 1908 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jamey L. Jenkins
Publisher : Springer Science & Business Media
ISBN 13 : 1461480159
Total Pages : 255 pages
Book Rating : 4.4/5 (614 download)
Download or read book Observing the Sun written by Jamey L. Jenkins and published by Springer Science & Business Media. This book was released on 2013-07-19 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Observing the Sun” is for amateur astronomers at all three levels: beginning, intermediate, and advanced. The beginning observer is often trying to find a niche or define a specific interest in his hobby, and the content of this book will spark that interest in solar observing because of the focus on the dynamics of the Sun. Intermediate and advanced observers will find the book invaluable in identifying features (through photos, charts, diagrams) in a logical, orderly fashion and then guiding the observer to interpret the observations. Because the Sun is a dynamic celestial body in constant flux, astronomers rarely know for certain what awaits them at the eyepiece. All features of the Sun are transient and sometimes rather fleeting. Given the number of features and the complex life cycles of some, it can be a challenging hobby. “Observing the Sun” provides essential illustrations, charts, and diagrams that depict the forms and life cycles of the numerous features visible on the Sun.
Author : Martin Griffiths
Publisher : Springer
ISBN 13 : 3030009041
Total Pages : 322 pages
Book Rating : 4.0/5 (3 download)
Download or read book Observer's Guide to Variable Stars written by Martin Griffiths and published by Springer. This book was released on 2018-12-06 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been a particularly popular area of research for amateurs for many years; the material contained herein serves as both an introduction to amateur astronomers and a useful reference source for seasoned variable star observers. With its thorough, non-mathematical descriptions of variable stars and tips for how to see them, this book enables novices and experts alike to set off into the field and observe a wide range of delightful sights. It strikes a balance between easily visible objects that can be seen in any telescope or binoculars, and variable stars that are a direct challenge to those with large aperture equipment or access to photometric tools and methods. After helping the observer differentiate between variable star types, the author goes on to explain the skills needed to operate a telescope and other equipment, as well as how to couple filters to a CCD camera or digital SLR camera in order to photometrically record these celestial objects. Further, the book includes an observational guide to 50 objects for study, with finder charts and data about light curves for ease of identification, along with the stars’ celestial coordinates, magnitudes, and other pertinent information.
Author :
Publisher :
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.:/5 (715 download)
Download or read book The Sun as a Variable Star written by and published by . This book was released on 1994 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mikolaj Jerzykiewicz
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Sun as a Variable Star III written by Mikolaj Jerzykiewicz and published by . This book was released on 1967 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The observations of Neptune in the years 1950-1962, corrected for the effects of changing distance, indicate a decrease in blue magnitude from 8.26 to 8.23. During the period 1963-1966 the brightness was constant and equal to 8.24 mag. The steady decrease of the instrumental transformation coeffcient A8 in the years 1950-1960 throws some doubt on the reality of the changes in Neptune's brightness. If these changes are real they may be due either to intrinsic changes in Neptune's surface or to solar variability or to both. The observations of Uranus indicate no changes in solar brightness from 1950 to 1966 if 22 percent darkening from the equator towards the pole of the planet is assumed. On this assumption the total range of the intrinsic change of the blue magnitude of Uranus is 0.038 mag., with a period of 42 years. In the authors opinion, this long sequence of photoelectric observations has taught us more about the variations of solar type stars than about the sun itself. The observations of 15 stars of spectral types F and G in the years 1955-1966 indicate that for none of these stars does the standard deviation of the yearly mean magnitude exceed 0.008, and for the stars 40 Leo, beta CVn and eta Boo this deviation is less than 0.004 mag. No evidence of variability in the stars which are similar to the sun has been detected during this program. If we assume the sun acts in similar fashion to each of these stars, its variability over a fifteen-year period probably does not exceed one-half of one percent. Another by-product of this research results from one of the most extensive series of night-time extinction observations ever carried out at a single observatory. (Author).
Author : Taylor Cisco Jr
Publisher : Lulu.com
ISBN 13 : 1411683226
Total Pages : 30 pages
Book Rating : 4.4/5 (116 download)
Download or read book Earth's Irregular Variable Star - I: Crucifixion Black Sun written by Taylor Cisco Jr and published by Lulu.com. This book was released on with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward Charles Pickering
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.3/5 (91 download)
Download or read book Variable Stars of Short Period written by Edward Charles Pickering and published by . This book was released on 1881 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
