Livros e Apostilas de Astronomia

Guias e Técnicas de Observações Astronômicas ... Página 4

Jeff A. Farinacci, "Guide to Observing Deep-Sky Objects"

Springer | 2007-11-15 | ISBN: 0387728503 | 198 pages | PDF | 6,1 MB

Guide to Observing Deep-Sky Objects is a reference book for amateur astronomers. It contains, for each constellation, a star chart showing the Bayer labels, a table for many of the stars in the constellation, along with their positions and magnitudes, and a table of the deep-sky objects in the constellation, with relevant observational data.

Facing pages provide unique year-long graphs that show when the constellation is visible in the sky, allowing the user to quickly determine whether a given constellation can be seen, and when the best time to see it will be.

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C.R. Kitchin “Astrophysical Techniques, Fourth Edition"
Taylor & Francis | 2003-08-01 | ISBN: 0750309466 | 493 pages | PDF | 4,1 Mb

Providing a comprehensive and clear account of the instruments and techniques used in modern astronomy and astrophysics, the fourth edition of Astrophysical Techniques continues to offer information on all astronomical observations. Retaining the aims of earlier editions, the author unifies the concepts through lucid language and cohesive organization of the book. Revised and updated, this book encompasses an ever-diverging array of observational techniques using the detection-imaging-ancillary instruments pattern.

The first several sections emphasize the detection of radiation or other information carrier as well as the instruments and techniques used to facilitate and optimize that detection. Later chapters discuss photometers and spectroscopes in detail while also examining the techniques of astrometry, polarimetry, and magnetometry. New to the Fourth Edition: · Many instruments and techniques included for the first time ·

A section that supplies Web sites and online resources · Elimination of archaic topics, providing the most up-to-date information available Astrophysical Techniques, Fourth Edition maintains comprehensive coverage of the instruments and techniques used in current astronomy and astrophysics, making it a superb reference for undergraduate and postgraduate students in astronomy, amateur astronomers, and professional astronomers.

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Short-Period Binary Stars
Springer | 2008-04-07 | ISBN: 1402065434 | 270 pages | PDF | 9,1 MB

Short-period binaries run the gamut from widely separated stars to black-hole pairs; in between are systems that include neutron stars and white dwarfs, and partially evolved systems such as tidally distorted and over-contact systems. These objects represent stages of evolution of binary stars, and their degrees of separation provide critical clues to how their evolutionary paths differ from that of single stars. The widest and least distorted systems provide astronomers with the essential precise data needed to study all stars: mass and radius. The interactions of binary star components, on the other hand, provide a natural laboratory to observe how the matter in these stars behaves under different and often varying physical conditions. Thus, cataclysmic variables with and without overpoweringly strong magnetic fields, and stars with densities from that found in the Sun to the degenerate matter of white dwarfs and the ultra-compact states of neutron stars and black holes are all discussed. The extensive index permits cross-referencing.

The objects being discussed are carefully defined in each section and the contributions are organized according to the compactness of the binaries that are treated. Some treatments are of individual objects; others are more general.

The observational techniques that are used by the contributors to throw light on these objects include gravitational wave investigations, X-ray, radio, infrared, and optical astronomy; and the ways in which these objects are analyzed is also discussed. Among the specific objects reported is the Double Pulsar, highlighting what observations of this object tell us about fundamental physics.

The level of the book is appropriate for both professional astronomers in the field as well as people interested in other fields and dedicated amateur astronomers.

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Planetary Systems: Detection, Formation and Habitability of Extrasolar Planets
Publisher: Springer | Pages: 250 | 2008-12-01 | ISBN 3540757473 | PDF | 8 MB

Over the past ten years, the discovery of extrasolar planets has opened a new field of astronomy, and this area of research is rapidly growing, from both the observational and theoretical point of view. The presence of many giant exoplanets in the close vicinity of their star shows that these newly discovered planetary systems are very different from the solar system. New theoretical models are being developed in order to understand their formation scenarios, and new observational methods are being implemented to increase the sensitivity of exoplanet detections.

In the present book, the authors address the question of planetary systems from all aspects. Starting from the facts (the detection of more than 300 extraterrestrial planets), they first describe the various methods used for these discoveries and propose a synthetic analysis of their global properties. They then consider the observations of young stars and circumstellar disks and address the case of the solar system as a specific example, different from the newly discovered systems. Then the study of planetary systems and of exoplanets is presented from a more theoretical point of view. The book ends with an outlook to future astronomical projects, and a description of the search for life on exoplanets. This book addresses students and researchers who wish to better understand this newly expanding field of research.

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- Detection, Formation, Properties, Habitability
Springer | 2008-04-03 | ISBN: 3540740074 | 314 pages | PDF | 20,6 MB

This edited, multi-author volume will be an invaluable introduction and reference to all key aspects in the field of exoplanet research. The reviews cover: Detection methods and properties of known exoplanets, Detection of extrasolar planets by gravitational microlensing. The formation and evolution of terrestrial planets in protoplanetary and debris disks. The brown dwarf-exoplanet connection.
Formation, migration mechanisms and properties of hot Jupiters. Dynamics of multiple exoplanet systems. Doppler exoplanet surveys. Searching for exoplanets in the stellar graveyard. Formation and habitability of extra solar planets in multiple star systems. Exoplanet habitats and the possibilities for life. Moons of exoplanets: habitats for life.

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Bruce L. Gary "Exoplanet Observing Four Amateurs
2007 | English | 170 pages | PDF | 3,81 MB

This book is intended for use by amateur astronomers, not professional astronomers. The distinction is not related to the fact that professional astronomers understand everything in this book; it’s related to the fact that the professionals don’t need to know most of what’s in this book.

Professionals don’t need to know how to deal with telescopes with an imperfect polar alignment (because their telescopes are essentially perfectly aligned). They don’t have to deal with telescopes that don’t track perfectly (because their tracking gears are close to perfect). They don’t have to worry about focus changing during an observing session (because their “tubes” are made of low thermal expansion materials). They don’t have to worry about CCDs with significant “dark current” thermal noise (because their CCDs are cooled with liquid nitrogen). Professionals don’t have to worry about scintillation noise (because it’s much smaller with large apertures). Professionals can usually count on sharp images the entire night with insignificant changes in “atmospheric seeing” (because their observatories are at high altitude sites and the telescope apertures are situated well above ground level). Professionals also don’t have to deal with large atmospheric extinction effects (again, because their observatories are at high altitude sites).

If a professional astronomer had to use amateur hardware at an amateur site they would have to learn new ways to overcome the limitations that amateurs deal with every night. There are so many handicaps unique to the amateur observatory that we should not look to the professional astronomer for help on these matters. Therefore, amateurs should look for help from each other for solutions to these problems. In other words, don’t expect a book on amateur observing tips to be written by a professional astronomer; only another amateur can write such a book.

I’ve written this book with experience as both a professional astronomer and a post-retirement amateur. Only the first decade of my professional life was in astronomy, as a radio astronomer. The following three decades were in the atmospheric sciences, consisting of remote sensing using microwave radiometers. Although there are differences between radio astronomy and optical astronomy, and bigger differences between atmospheric remote sensing with microwave radiometers and optical astronomy, they share two very important requirements: 1) the need to optimize observing strategy based on an understanding of hardware strengths and weaknesses, and 2) the need to deal with stochastic noise and systematic errors during data analysis.

This book was written for the amateur who may not have the background and observing experience that I brought to the hobby 8 years ago. How can a reader know if they’re ready for this book? Here’s a short litmus test question: do you know the meaning of “differential photometry”? If so, and if you’ve done it, then you’re ready for this book. Bruce L. Gary

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