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Author: Carlos Jaschek
Publisher: Cambridge University Press
ISBN: 9780521404211
Category : Science
Languages : en
Pages : 446
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Book Description
This book provides a review of the work in progress on the infrared spectral region of stars. The most important previous mission, the Infrared Astronomy Satellite (IRAS) was launched in 1983. Although it was only operating for one year, in that time it surveyed the whole sky for infrared emitters of many different kinds providing a fundamental catalogue of thousands of objects. As a consequence of its success, a new mission to observe the infrared sky is being planned. The Infrared Space Observatory (ISO) is scheduled for a launch in May 1993. It should add substantially to our knowledge of the stars. The volume is based on the proceedings of an international conference held in Montpellier, France. It provided an excellent forum for the experts in the field to get together and evaluate the status of current knowledge and analyse the instrumentation.
Author: Carlos Jaschek
Publisher: Cambridge University Press
ISBN: 9780521404211
Category : Science
Languages : en
Pages : 446
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Book Description
This book provides a review of the work in progress on the infrared spectral region of stars. The most important previous mission, the Infrared Astronomy Satellite (IRAS) was launched in 1983. Although it was only operating for one year, in that time it surveyed the whole sky for infrared emitters of many different kinds providing a fundamental catalogue of thousands of objects. As a consequence of its success, a new mission to observe the infrared sky is being planned. The Infrared Space Observatory (ISO) is scheduled for a launch in May 1993. It should add substantially to our knowledge of the stars. The volume is based on the proceedings of an international conference held in Montpellier, France. It provided an excellent forum for the experts in the field to get together and evaluate the status of current knowledge and analyse the instrumentation.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: K.N. Rao
Publisher: Academic Press
ISBN: 0323146759
Category : Science
Languages : en
Pages : 539
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Book Description
Spectroscopy of the Earth's Atmosphere and Interstellar Medium focuses on the characteristics of the electromagnetic spectrum of the Earth's atmosphere in the far-infrared and microwave regions. It discusses the modes of observation in field measurements and reviews the two techniques used in the spectral region. Organized into six chapters, this volume begins with an overview of the effect of water-vapor absorption, followed by a discussion on the two frequently used method for deriving atmospheric parameters from high-resolution infrared atmospheric spectra, namely, the equivalent width (EW) technique and the nonlinear least-square fitting (NLSF). Other chapters consider the mechanisms by which interstellar clouds are formed. In addition, the book explores the composition of interstellar clouds, ion-molecule reactions, and the formation of stars. This book will be useful to anyone involved in, or interested in learning more about the field of atmospheric spectroscopy, including scientists, aeronomers, astronomers, astrophysicists, and students.
Author: M.F. Kessler
Publisher: Springer Science & Business Media
ISBN: 9400972512
Category : Science
Languages : en
Pages : 471
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Book Description
The last major conference on infrared astronomy was the IAU Symposium No. 96 in June 1980. Since then, the discipline has continued to mature and to contribute to all branches of astrophysics. One particular area of growth has been in spectroscopic capabilities at all infrared wavelengths. The purpose of the Symposium in Toledo was to review the scientific questions to be addressed via infrared spectroscopy and to provide, in the proceedings, a useful summary of the field. The sensitivity of infrared spectroscopic observations is still generally limited by detector characteristics or by thermal background radiation. However in recent years improvements in detector technology together with developments in spectroscopic instrumentation have made possible both quite detailed spectroscopy of the brighter members of many classes of galactic sources and also begun to open up some infrared spectroscopy of extragalactic sources. The potential of the field in the next decade or two is clear. The lRAS mission has completed one of the pre-requisites, namely an all-sky photometric survey. Major space missions utilising cryogenic infrared telescopes have been approved in Europe (ISO) and seem likely in the USA (SIRTF); plans for space submillimeter telescopes are firming up. On the ground large telescopes optimized for infrared observations are now in operation at high altitude sites and specialized submillimeter facilities are under construction. The particular advantages of planned, very large telescopes for infrared observations are widely accepted.
Author:
Publisher:
ISBN:
Category : Infrared spectroscopy
Languages : en
Pages : 32
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Book Description
Author: Russell G. Walker
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 44
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Book Description
SURVEY OF OBSERVATIONAL DATA ON INFRARED EMISSION FROM CELESTIAL OBJECTS IS PRESENTED AND CORRELATED WITH RECENT THEORETICAL CALCULATIONS. Spectral distribution of the radiation is analyzed with regard to departures from blackbody radiation predictions based upon effective temperatures and stellar spectral classification. Application of these data to infrared systems is discussed and the infrared background radiance values due to the galactic and solar systems are calculated. (Author).
Author: David A. Allen
Publisher: John Wiley & Sons
ISBN:
Category : Nature
Languages : en
Pages : 232
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Book Description
Author: G. A. Gurzadyan
Publisher: Elsevier
ISBN: 1483148858
Category : Science
Languages : en
Pages : 359
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Book Description
Flare Stars covers the significant progress in photoelectric, photographic, and spectral observations of flare stars. Flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes believed to be due to extremely intense flares. This book is composed of 16 chapters and begins with an overview of flare stars and the hypothesis of infrared photon transformation. The succeeding chapters deal with the inverse Compton Effect, X-ray radiation and the theory of the transition radiation and its importance to the T Tauri type stars and peculiar objects. These topics are followed by analysis of the photometric and colorimetric flare data based on the fast-electron hypothesis. Other chapters consider the theory of the chromophore of flare stars and the general laws for the behavior of flare stars in stellar association and for T Tauri type stars. The remaining chapters explore the observational data that have shed light on the problems of radio emission and flare dynamics. These chapters also describe the great cosmogonic importance of stellar flares, particularly for understanding the nature and the true character of energy sources within the stars. This book will be of great value to astronomers and researchers.
Author: Hans Ulrich Käufl
Publisher: Springer Science & Business Media
ISBN: 9783540252566
Category : Science
Languages : en
Pages : 588
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Book Description
Two specialized new instruments for ESO's VLT, VISIR and CRIRES, spawned the idea for this workshop. CRIRES is a dedicated very high resolution infrared spectrograph; VISIR features a high resolution spectroscopic mode. Together, the instruments combine the sensitivity of an 8m-telescope with the now well-established reliability of VLT-facility instruments. High resolution here means that lines in cool stellar atmospheres and HII-regions can be resolved. The astrophysical topics discussed in this rather specialized workshop range from the inner solar system to active galactic nuclei. There are many possibilities for new discoveries with these instruments, but the unique capability, which becomes available through high-resolution infrared spectroscopy, is the observation of molecular rotational-vibrational transitions in many astrophysical environments. Particularly interesting and surprising in this context, many papers on modeling and laboratory spectroscopy at the workshop appear to indicate that astronomical observations are lagging a bit behind in this field. The papers are an interesting mix of reports from existing high resolution facilities, reports on modeling efforts of synthetic spectra and reports on laboratory spectra. In this sense, a fruitful exchange between molecular physics and astronomy was again accomplished and is documented in this volume.
Author:
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 220
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Book Description