High Angular Resolution Stellar Interferometry
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High Angular Resolution Stellar Interferometry
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Author : International Astronomical Union. Colloquium
language : en
Publisher:
Release Date : 1979
High Angular Resolution Stellar Interferometry written by International Astronomical Union. Colloquium and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Astronomical photometry categories.
High Angular Resolution Stellar Interferometry
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Author :
language : en
Publisher:
Release Date : 1985
High Angular Resolution Stellar Interferometry written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Interferometry categories.
High Angular Resolution Stellar Interferometry
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Author : J. C. Dainty
language : en
Publisher:
Release Date : 1982
High Angular Resolution Stellar Interferometry written by J. C. Dainty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
The progress made an AFOSR grant 81-0003 is reviewed in six sections: 1. Space-time analysis of images, 2. Phase problem, one dimensional, 3. Phase problem, two dimensional, 4. Laboratory simulations, 5. Observational speckle and 6. Properties of atmospheric turbulence.
High Angular Resolution Stellar Interferometry
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Author : International Astronomical Union. Colloquium
language : en
Publisher:
Release Date : 1979
High Angular Resolution Stellar Interferometry written by International Astronomical Union. Colloquium and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Astronomical photometry categories.
Very High Angular Resolution Imaging
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Author : J.G. Robertson
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-01
Very High Angular Resolution Imaging written by J.G. Robertson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-01 with Science categories.
The 1990s are proving to be a very exciting p&iod for high angular resolution astronomy. At radio wavelengths a combination of new array instruments and pow erful imaging algorithms have generated images of unprecedented resolution and quality. In the optical and infrared, the great technical difficulties associated with constructing separated-aperture interferometers have been largely overcome, and many new instruments are now operating or are being developed. As these pro grams start to produce observational results they will be able to draw extensively on the experience gained by the radio-interferometry community. Thus it seemed that the time was ripe for a meeting which would bring together workers from all wavelength ranges to discuss the details of the science and art of "Very High Angular Resolution Imaging" . While the main emphasis of Symposium No. 158 was on high resolution tech niques from the radio, mm-wave, infrared and optical bands, it also provided an opportunity for presentation of astronomical results from these techniques. As well as giving our colleagues from the Northern Hemisphere a break from midwinter, the location of the Symposium in Australia recognised the continuing development of astronomical interferometry in this country, especially the recent completion of the Australia Telescope radio array, and the progress toward com missioning of the Sydney University Stellar Interferometer. A number of the par ticipants visited these instruments during the post-symposium tour.
Astronomy At High Angular Resolution
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Author : Henri M. J. Boffin
language : en
Publisher: Springer
Release Date : 2016-08-24
Astronomy At High Angular Resolution written by Henri M. J. Boffin and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-24 with Science categories.
This book offers an essential compendium of astronomical high-resolution techniques. Recent years have seen considerable developments in such techniques, which are critical to advances in many areas of astronomy. As reflected in the book, these techniques can be divided into direct methods, interferometry, and reconstruction methods, and can be applied to a huge variety of astrophysical systems, ranging from planets, single stars and binaries to active galactic nuclei, providing angular resolution in the micro- to tens of milliarcsecond scales. Written by experts in their fields, the chapters cover adaptive optics, aperture masking imaging, spectra disentangling, interferometry, lucky imaging, Roche tomography, imaging with interferometry, interferometry of AGN, AGN reverberation mapping, Doppler- and magnetic imaging of stellar surfaces, Doppler tomography, eclipse mapping, Stokes imaging, and stellar tomography. This book is intended to enable a next generation of astronomers to apply high-resolution techniques. It informs readers on how to achieve the best angular resolution in the visible and near-infrared regimes from diffraction-limited to micro-arcsecond scales.
High Precision Infra Red Stellar Interferometry
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Author : Benjamin F. Lane
language : en
Publisher: Universal-Publishers
Release Date : 2003
High Precision Infra Red Stellar Interferometry written by Benjamin F. Lane and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Science categories.
This dissertation describes work performed at the Palomar Testbed Interferometer (PTI) during 1998-2002. Using PTI, we developed a method to measure stellar angular diameters in the 1-3 milli-arcsecond range with a precision of better than 5%. Such diameter measurements were used to measure the mass-radius relations of several lower main sequence stars and hence verify model predictions for these stars. In addition, by measuring the changes in Cepheid angular diameters during the pulsational cycle and applying a Baade-Wesselink analysis we are able to derive the distances to two galactic Cepheids (h Aql & z Gem) with a precision of 10%; such distance determinations provide an independent calibration of the Cepheid period-luminosity relations that underpin current estimates of cosmic distance scales. Second, we used PTI and the adaptive optics facility at the Keck Telescope on Mauna Kea to resolve the low mass binary systems BY Dra and GJ 569B, resulting in dynamical mass determinations for these systems. GJ 569B most likely contains at least one sub-stellar component, and as such represents the first dynamical mass determination of a brown dwarf. Finally, a new observing technique, dual star phase referencing, was developed and demonstrated at PTI. Phase referencing allows interferometric observations of stars previously too faint to observe, and is a prerequisite for large-scale interferometric astrometry programs such as the one planned for the Keck Interferometer; interferometric astrometry is a promising technique for the study of extra-solar planetary systems, particularly ones with long-period planets.
Imaging At High Angular Resolution Of Stellar Surfaces And Close Environment
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Author : Nicolas Nardetto
language : en
Publisher: EDP Sciences
Release Date : 2019-09-26
Imaging At High Angular Resolution Of Stellar Surfaces And Close Environment written by Nicolas Nardetto and has been published by EDP Sciences this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-26 with Science categories.
Imaging at high angular resolution (HRA) is a ?ourishing discipline. High performance instruments like the spectro-polarimeter SPHERE at VLT/ESO has recently been implemented. A harvest of splendid results is continuously coming from interferometry with PIONIER, MATISSE, and now GRAVITY (all at VLTI/ESO), VEGA and JouFlu (CHARA), and at longer wavelengths with ALMA at VLTI/ESO and NOEMA/IRAM. The future is already underway with the very close launch of JWST/NASA, and the development of ELT at ESO. HRA provides a unique way to study regions of stellar formation, proto-planetary discs as well as the surfaces of stars and their environments. This volume offers lectures given by world experts in the ?eld during the EvrySchatzman School on Stellar Physics (EES 2017) held in Roscoff, France. The addressed topics include a course of introduction to optical/IR interferometry covering the history and basic principles, a course on diffraction-dominated observational astronomy, and a course presenting the principles and instrumentation of optical long baseline interferometry. This book will be a valuable reference for researchers and students in the coming years.
Seeing The Unseen
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Author : Harold A. McAlister
language : en
Publisher: IOP Publishing Limited
Release Date : 2020
Seeing The Unseen written by Harold A. McAlister and has been published by IOP Publishing Limited this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Science categories.
This book provides a detailed history of stellar interferometry as practised at Mount Wilson Observatory. It covers the origin of the field in the early 19th Century, and its subsequent development throughout the last hundred years at the observatory, including the people, instruments, and methods involved in advancing high angular resolution astronomy. Additionally, two extensive appendices cover the importance of Mount Wilson today as well as an interferometry primer. It is an excellent book for historians, astronomers and anyone interested Mount Wilson. Key Features Describes the revolutionary work performed at the Mount Wilson Observatory in stellar astrophysics, extragalactic astronomy, and its role in high spatial resolution astronomy Focuses on the history and heritage of Mount Wilson Accessible to specialists, historians, and advanced amateur astronomers
Spatial Interferometry In Optical Astronomy
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Author : Daniel Y. Gezari
language : en
Publisher:
Release Date : 1990
Spatial Interferometry In Optical Astronomy written by Daniel Y. Gezari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Astronomy categories.