Ground-based coronagraphy with high-order adaptive optics
Anand Sivaramakrishnan,C. Koresko,C. Koresko,Russell B. Makidon,Thomas Berkefeld,Thomas Berkefeld,Marc J. Kuchner,Marc J. Kuchner +7 more
TLDR
In this article, the authors present simulations of coronagraphs matched to adaptive optics (AO) systems on the Calypso 1.2 m, Palomar Hale 5 m, and Gemini 8 m telescopes under various atmospheric conditions and identify useful parameter ranges for AO coronagraphy.Abstract:
We summarize the theory of coronagraphic optics and identify a dimensionless —ne-tuning parameter, F, which we use to describe the Lyot stop size in the natural units of the coronagraphic optical train and the observing wavelength. We then present simulations of coronagraphs matched to adaptive optics (AO) systems on the Calypso 1.2 m, Palomar Hale 5 m, and Gemini 8 m telescopes under various atmospheric conditions and identify useful parameter ranges for AO coronagraphy on these telescopes. Our simulations employ a tapered, high-pass —lter in spatial frequency space to mimic the action of adaptive wave front correction. We test the validity of this representation of AO correction by comparing our simulations with recent K-band data from the 241 channel Palomar Hale AO system and its dedicated Palomar High Angular Resolution Observer (PHARO) science camera in coronagraphic mode. Our choice of monochromatic modeling enables us to distinguish between underlying halo suppression and ★ b)read more
Citations
More filters
Journal ArticleDOI
First light of the Gemini Planet Imager
Bruce Macintosh,Bruce Macintosh,James R. Graham,Patrick Ingraham,Quinn Konopacky,Christian Marois,Marshall D. Perrin,Lisa Poyneer,Brian J. Bauman,Travis Barman,Adam Burrows,Andrew Cardwell,Jeffrey Chilcote,Robert J. De Rosa,Daren Dillon,René Doyon,Jennifer Dunn,Darren Erikson,Michael P. Fitzgerald,Donald T. Gavel,Stephen J. Goodsell,Markus Hartung,Pascale Hibon,Paul Kalas,James E. Larkin,Jérôme Maire,Franck Marchis,Mark S. Marley,James McBride,Max Millar-Blanchaer,Katie M. Morzinski,Andrew Norton,Ben R. Oppenheimer,David Palmer,Jennifer Patience,Laurent Pueyo,Fredrik T. Rantakyrö,Naru Sadakuni,Leslie Saddlemyer,Dmitry Savransky,Andrew Serio,Rémi Soummer,Anand Sivaramakrishnan,Anand Sivaramakrishnan,Inseok Song,Sandrine Thomas,J. Kent Wallace,Sloane Wiktorowicz,Schuyler Wolff +48 more
TL;DR: Observations ofBeta Pictoris clearly detect the planet, Beta Pictoris b, in a single 60-s exposure with minimal postprocessing, and fitting the Keplerian orbit of Beta Pic b using the new position together with previous astrometry gives a factor of 3 improvement in most parameters over previous solutions.
Journal ArticleDOI
Detection and characterization of exoplanets and disks using projections on karhunen-loève eigenimages
TL;DR: In this paper, a new method to achieve point-spread function (PSF) subtractions for high-contrast imaging using principal component analysis that is applicable to both point sources or extended objects (disks) is described.
Book
The Exoplanet Handbook
TL;DR: In this paper, the authors present an overview of the solar system and its evolution, including the formation and evolution of stars, asteroids, and free-floating planets, as well as their internal and external structures.
Journal ArticleDOI
Detection and Characterization of Exoplanets and Disks using Projections on Karhunen-Loeve Eigenimages
TL;DR: In this article, a new method to achieve point spread function (PSF) subtractions for high contrast imaging using principal component analysis (PCA) that is applicable to both point sources or extended objects (disks) is described.
Journal ArticleDOI
SPHERE: the exoplanet imager for the Very Large Telescope
Jean-Luc Beuzit,Arthur Vigan,David Mouillet,Kjetil Dohlen,Raffaele Gratton,Anthony Boccaletti,Jean-François Sauvage,H. M. Schmid,Maud Langlois,Cyril Petit,Andrea Baruffolo,M. Feldt,Julien Milli,Zahed Wahhaj,L. Abe,U. Anselmi,J. Antichi,Rudy Barette,J. Baudrand,Pierre Baudoz,Andreas Bazzon,P. Bernardi,P. Blanchard,R. Brast,Pietro Bruno,Tristan Buey,Marcel Carbillet,M. Carle,Enrico Cascone,F. Chapron,Gael Chauvin,Julien Charton,Riccardo Claudi,Anne Costille,V. De Caprio,A. Delboulbe,Silvano Desidera,Carsten Dominik,Mark Downing,O. Dupuis,Christophe Fabron,D. Fantinel,G. Farisato,Philippe Feautrier,Enrico Fedrigo,T. Fusco,P. Gigan,Christian Ginski,Julien Girard,Enrico Giro,D. Gisler,L. Gluck,Cecile Gry,Th. Henning,N. Hubin,Emmanuel Hugot,S. Incorvaia,M. Jaquet,M. Kasper,Eric Lagadec,Anne-Marie Lagrange,H. Le Coroller,D. Le Mignant,B. Le Ruyet,G. Lessio,J. L. Lizon,M. Llored,Lars Lundin,F. Madec,Yves Magnard,M. Marteaud,P. Martinez,D. Maurel,Francois Menard,Dino Mesa,O. Möller-Nilsson,Thibaut Moulin,C. Moutou,Alain Origne,J. Parisot,A. Pavlov,D. Perret,J. Pragt,Pascal Puget,Patrick Rabou,Juan-Luis Ramos,Jean Michel Reess,F. Rigal,Sylvain Rochat,Ronald Roelfsema,G. Rousset,A. Roux,Michel Saisse,Bernardo Salasnich,E. Sant'Ambrogio,Salvo Scuderi,D. Segransan,Arnaud Sevin,Ralf Siebenmorgen,Christian Soenke,Eric Stadler,Marcos Suarez,Didier Tiphene,Massimo Turatto,Stéphane Udry,Farrokh Vakili,L. B. F. M. Waters,L. Weber,Francois Wildi,Gérard Zins,Alice Zurlo +110 more
TL;DR: The Spectro-Polarimetic High contrast imager for Exoplanets REsearch (SPHERE) was designed and built for the ESO Very Large Telescope (VLT) in Chile as mentioned in this paper.
References
More filters
Journal ArticleDOI
The Fourier Transform and Its Applications
Journal ArticleDOI
Optical Resolution Through a Randomly Inhomogeneous Medium for Very Long and Very Short Exposures
TL;DR: In this article, the average resolution of very-long and very-short-exposure images is studied in terms of the phase and log-amplitude structure functions, whose sum is called the wave-structure function.
Journal ArticleDOI
Discovery of a cool brown dwarf
T. Nakajima,B. R. Oppenheimer,Shrinivas R. Kulkarni,David A. Golimowski,Keith Matthews,Samuel T. Durrance +5 more
TL;DR: In this article, the authors reported the discovery of a probable companion to the nearby star G1229, with no more than one-tenth the luminosity of the least luminous hydrogen-burning star.
Discovery of a Cool Brown Dwarf
David A. Golimowski,Samuel T. Durrance,T. Nakajima,B. R. Oppenheimer,Shrinivas R. Kulkarni,Keith Matthews,C. J. Burrows +6 more
TL;DR: The discovery of a probable companion to the nearby star G1229, with no more than onetenth the luminosity of the least luminous hydro-gen-burning star, is reported, concluding that the companion is a brown dwarf with a temperature of less than 1,200 K, and a mass ∼20–50 times that of Jupiter.