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Author: Sunggyu Takase Publisher: Taylor & Francis ISBN: 1351467271 Category : Science Languages : en Pages : 92
Book Description
It is only several decades since galaxies were recognized as huge aggregations of matter in the universe which consist of myriads of stars and vast clouds of gas. The wide variety of shapes of galaxies is one of the wonders of the universe. Attempts to classify galaxies have continued since an early stage of study, when they were still called nebulae. The first step towards classification was a grouping of the patterns; the second step a systematic arrangement of various morphological types. Classification schemes that are in present use, such as Hubble's, are in the second group. These classifications are usually based on pattern recognition after a visual inspection of the photographic image of the galaxy, and is therefore qualitative and more or less subjective. Using surface photometry of galaxies, a technique which has advanced remarkably in recent years, photographs of galaxies taken in several colour bands can now be efficiently reduced to photometric data. Analysis of this data gives quantitative information on the luminosity and colour distribution for every element of galaxies. The Atlas of Selected Galaxies presents photographs taken with the Okayama 188 cm reflector and the Kiso 105 cm Schmidt telescope for the purpose of photometric analysis. A large number of illustration are given to demonstrate the way in which photographs of galaxies are reduced into quantitative data. These illustrations also show some representative results obtained in the course of the editors' work on the quantitative classification of galaxies. Part I, General Description of the Classification and Photometric Analyses, includes eight sections, whose authors all shared the photometric work and prepared the photographs. In Part II, The Atlas, the illustrations are arranged in sections corresponding to those in Part I. Part III includes tables of data for the atlas.
Author: Sunggyu Takase Publisher: Taylor & Francis ISBN: 1351467271 Category : Science Languages : en Pages : 92
Book Description
It is only several decades since galaxies were recognized as huge aggregations of matter in the universe which consist of myriads of stars and vast clouds of gas. The wide variety of shapes of galaxies is one of the wonders of the universe. Attempts to classify galaxies have continued since an early stage of study, when they were still called nebulae. The first step towards classification was a grouping of the patterns; the second step a systematic arrangement of various morphological types. Classification schemes that are in present use, such as Hubble's, are in the second group. These classifications are usually based on pattern recognition after a visual inspection of the photographic image of the galaxy, and is therefore qualitative and more or less subjective. Using surface photometry of galaxies, a technique which has advanced remarkably in recent years, photographs of galaxies taken in several colour bands can now be efficiently reduced to photometric data. Analysis of this data gives quantitative information on the luminosity and colour distribution for every element of galaxies. The Atlas of Selected Galaxies presents photographs taken with the Okayama 188 cm reflector and the Kiso 105 cm Schmidt telescope for the purpose of photometric analysis. A large number of illustration are given to demonstrate the way in which photographs of galaxies are reduced into quantitative data. These illustrations also show some representative results obtained in the course of the editors' work on the quantitative classification of galaxies. Part I, General Description of the Classification and Photometric Analyses, includes eight sections, whose authors all shared the photometric work and prepared the photographs. In Part II, The Atlas, the illustrations are arranged in sections corresponding to those in Part I. Part III includes tables of data for the atlas.
Author: Lars Lindberg Christensen Publisher: Springer Science & Business Media ISBN: 0387938559 Category : Science Languages : en Pages : 143
Book Description
Like no other telescope ever invented, the NASA/ESA Hubble Space Telescope has given us magnificent high resolution views of the gigantic cosmic collisions between galaxies. Hubble's images are snapshots in time and catch the colliding galaxies in different stages of collision. Thanks to a new and amazing set of 60 Hubble images, for the first time these different stages can be put together to form a still-frame movielike montage showing the incredible processes taking place as galaxies collide and merge. The significance of these cosmic encounters reaches far beyond aesthetics. Galaxy mergers may, in fact, be some of the most important processes that shape our universe. Colliding galaxies very likely, hold some of the most important clues to our cosmic past and to our destiny. It now seems clear that the Milky Way is continuously undergoing merging events, some small scale, others on a gigantic scale. And the importance of this process in the lives of galaxies is much greater than what was previously thought.
Author: Paul W. Hodge Publisher: Springer Science & Business Media ISBN: 0306478188 Category : Science Languages : en Pages : 410
Book Description
This Atlas provides a complete set of images of Local Group Galaxies (excluding the three for which identification atlases are already in print) and shows the most important objects, including many thousands of individual stars and interstellar objects. It is unique in its coverage and format and provides a source of these fundamental data that will be used for many years. Researchers, students and even amateur astronomers will be able to use the Atlas to identify and study the various components of the nearly 30 important galaxies covered by the Atlas. The objects identified on the more than 200 charts include variable stars, globular star clusters, open star clusters, stellar associations, emission regions, supernova remnants, planetary nebulae and dust clouds. Each galaxy is accompanied by an extensive bibliography.
Author: Michael König Publisher: Cambridge University Press ISBN: 1107189489 Category : Nature Languages : en Pages : 353
Book Description
This reference atlas showcases around 250 beautiful galaxies within an amateur astronomer's reach and uses them to explain current astrophysical research.
Author: Robert C. Hickson Publisher: CRC Press ISBN: 9782884491167 Category : Science Languages : en Pages : 236
Book Description
Locates, describes, and illustrates all 100 known compact groups of galaxies. The search included the entire set of Palomar Sky Survey redprints in the University of British Columbia collection. The CCD images were obtained at the Canada-France- Hawaii Telescope. A valuable reference for anyone studying compact groups or other interacting galaxies. No index or bibliography. Annotation copyright by Book News, Inc., Portland, OR
Author: Clay Sherrod Publisher: Lulu.com ISBN: 1387537199 Category : Science Languages : en Pages : 160
Book Description
Finally, here is YOUR blueprint to discovery in astronomy. Today's non-professional astronomers with well-equipped observatories - advanced amateurs, colleges, institutions - are now contributing more than ever to fascinating discoveries throughout space. These private facilities now contribute thousands of observations and discoveries yearly into the scientific database. One such endeavor is that of supernovae searches, exploring distant galaxies in wait for these rare stellar explosions seen from millions of light years away. But where do we look? Current sources were lacking to detail the process of discovering and reporting these events, as was a study plan with suggested objects for monitoring. SUPERNOVA Search Atlas and Guide fills this void with over 300 carefully selected galaxies, photographed from the Arkansas Sky Observatories over a three year period. This study guide takes the guesswork out of discovery and provides the ultimate blueprint for your next discovery.
Author: Sunggyu Takase
Author: Sunggyu Takase
Author: Bunshiro Takase
Author: Jean-René Roy
Author: Lars Lindberg Christensen
Author: Paul W. Hodge
Author: Michael König
Author: Jeff Kanipe
Author: Ronald J. Buta
Author: Robert C. Hickson
Author: Clay Sherrod