Title Imaging at high angular resolution of stellar surfaces and close environment : Evry Schatzman School 2017 / Nicolas Nardetto, Yveline Lebreton, and Eric Lagadec, eds

Published [Les Ulis, France] : EDP Sciences, 2019

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Description 1 online resource Series EDP sciences proceedings EDP sciences proceedings Contents Intro; Evry Schatzman School 2017; List of participants; Contents; Preface; Diffraction-dominated observational astronomy; 1 Introduction; 2 Images in astronomy; 3 Coherence properties of light; 4 Diffraction-dominated imaging; 5 High-contrast imaging; 6 Atmospheric turbulence and Adaptive Optics; 7 Extreme adaptive optics; 8 Calibration of biases; 9 Focal-plane based wavefront control?; 10 Conclusion; References; Introduction to optical/IR interferometry: history and basic principles; 1 Introduction; 2 Some reminders; 3 Brief history about the measurements of stellar diameters 4 Light coherence5 Some examples of interferometers; 6 Three important theorems and some applications; References; Optical Long Baseline Interferometry; 1 Introduction; 2 Angular diameter and coherence of the wavefront; 3 Angular diameter and Object-Image relationship; 4 A direct imaging technique; 5 The reality of the coherence; 6 Practical considerations for the implementation of an interferometer; 7 A modern panorama of optical long baseline interferometry; 8 The study of stellar surface and their close environment usinginterferometry; 9 Steps to the future; References Summary Imaging at high angular resolution (HRA) is a flourishing 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 field during the Evry Schatzman 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 Bibliography Includes bibliographical references Notes On-line resource; title from PDF title page (EBSCO, viewed September 27, 2019) Subject Imaging systems in astronomy -- Congresses Interferometry -- Congresses Telescopes -- Congresses Resolution (Optics) -- Congresses Optics, Adaptive -- Congresses Astronomy -- Observations -- Congresses SCIENCE -- Physics -- Astrophysics. Astronomy Imaging systems in astronomy Interferometry Optics, Adaptive Resolution (Optics) Telescopes Genre/Form Conference papers and proceedings Form Electronic book Author Nardetto, Nicolas, editor Lebreton, Yveline, editor. Lagadec, Eric, editor ISBN 9782759823734 2759823733

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