Astrometric and photometric accuracies in high contrast imaging : The SPHERE speckle calibration tool (SpeCal)
R. Galicher,Anthony Boccaletti,Dino Mesa,Philippe Delorme,Raffaele Gratton,Maud Langlois,A-M. Lagrange,Anne-Lise Maire,H. Le Coroller,Gael Chauvin,Beth Biller,Faustine Cantalloube,Markus Janson,Eric Lagadec,N. Meunier,Arthur Vigan,Janis Hagelberg,Mickael Bonnefoy,Alice Zurlo,S. Rocha,D. Maurel,Marc Jaquet,T. Buey,L. Weber +23 more
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The SPHERE consortium developed a dedicated piece of software to process the data as mentioned in this paper, which corrects for instrumental artifacts and uses the speckle calibration tool to minimize the stellar light halo that prevents us from detecting faint sources like exoplanets or circumstellar disks.Abstract:
Context. The consortium of the Spectro-Polarimetric High-contrast Exoplanet REsearch installed at the Very Large Telescope (SPHERE/VLT) has been operating its guaranteed observation time (260 nights over five years) since February 2015. The main part of this time (200 nights) is dedicated to the detection and characterization of young and giant exoplanets on wide orbits.Aims. The large amount of data must be uniformly processed so that accurate and homogeneous measurements of photometry and astrometry can be obtained for any source in the field.Methods. To complement the European Southern Observatory pipeline, the SPHERE consortium developed a dedicated piece of software to process the data. First, the software corrects for instrumental artifacts. Then, it uses the speckle calibration tool (SpeCal) to minimize the stellar light halo that prevents us from detecting faint sources like exoplanets or circumstellar disks. SpeCal is meant to extract the astrometry and photometry of detected point-like sources (exoplanets, brown dwarfs, or background sources). SpeCal was intensively tested to ensure the consistency of all reduced images (cADI, Loci, TLoci, PCA, and others) for any SPHERE observing strategy (ADI, SDI, ASDI as well as the accuracy of the astrometry and photometry of detected point-like sources.Results. SpeCal is robust, user friendly, and efficient at detecting and characterizing point-like sources in high contrast images. It is used to process all SPHERE data systematically, and its outputs have been used for most of the SPHERE consortium papers to date. SpeCal is also a useful framework to compare different algorithms using various sets of data (different observing modes and conditions). Finally, our tests show that the extracted astrometry and photometry are accurate and not biased.read more
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Journal ArticleDOI
Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
Miriam Keppler,Myriam Benisty,Myriam Benisty,André Müller,Th. Henning,R. van Boekel,Faustine Cantalloube,Christian Ginski,Christian Ginski,R. G. van Holstein,Anne-Lise Maire,Adriana Pohl,Matthias Samland,Henning Avenhaus,Jean-Loup Baudino,Anthony Boccaletti,J. de Boer,M. Bonnefoy,Gael Chauvin,Gael Chauvin,Silvano Desidera,Maud Langlois,Maud Langlois,C. Lazzoni,G.-D. Marleau,G.-D. Marleau,Christoph Mordasini,N. Pawellek,N. Pawellek,Tomas Stolker,Arthur Vigan,Alice Zurlo,Alice Zurlo,Tilman Birnstiel,Wolfgang Brandner,M. Feldt,Mario Flock,Mario Flock,Mario Flock,Julien Girard,Julien Girard,Raffaele Gratton,Janis Hagelberg,Andrea Isella,Markus Janson,Markus Janson,Attila Juhasz,J. Kemmer,Quentin Kral,Quentin Kral,Anne-Marie Lagrange,Ralf Launhardt,Alexis Matter,Francois Menard,Julien Milli,P. Mollière,Johan Olofsson,Johan Olofsson,Laura M. Pérez,Paola Pinilla,Christophe Pinte,Christophe Pinte,Christophe Pinte,Sascha P. Quanz,T. Schmidt,Stéphane Udry,Zahed Wahhaj,Jonathan Williams,Esther Buenzli,M. Cudel,Carsten Dominik,Raphaël Galicher,M. Kasper,J. Lannier,Dino Mesa,Dino Mesa,David Mouillet,S. Peretti,C. Perrot,Graeme Salter,E. Sissa,Francois Wildi,L. Abe,Jacopo Antichi,Jean-Charles Augereau,Andrea Baruffolo,Pierre Baudoz,Andreas Bazzon,Jean-Luc Beuzit,P. Blanchard,S. S. Brems,Tristan Buey,V. De Caprio,Marcel Carbillet,M. Carle,Enrico Cascone,A. Cheetham,Riccardo Claudi,Anne Costille,A. Delboulbe,Kjetil Dohlen,Daniela Fantinel,Philippe Feautrier,Thierry Fusco,Enrico Giro,L. Gluck,Cecile Gry,Norbert Hubin,Emmanuel Hugot,M. Jaquet,D. Le Mignant,M. Llored,F. Madec,Yves Magnard,Patrice Martinez,D. Maurel,Michael Meyer,Michael Meyer,O. Möller-Nilsson,Thibaut Moulin,Laurent M. Mugnier,Alain Origne,A. Pavlov,D. Perret,Cyril Petit,J. Pragt,Pascal Puget,P. Rabou,Joany Andreina Manjarres Ramos,F. Rigal,S. Rochat,Ronald Roelfsema,Gérard Rousset,A. Roux,Bernardo Salasnich,Jean-François Sauvage,Arnaud Sevin,Christian Soenke,Eric Stadler,M. Suarez,Massimo Turatto,L. Weber +141 more
TL;DR: In this article, the authors detect a point source within the gap of the transition disk at about 195 mas (~22 au) projected separation and detect a signal from an inner disk component.
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.
Journal ArticleDOI
SPHERE: the exoplanet imager for the Very Large Telescope
Jean-Luc Beuzit,Jean-Luc Beuzit,Arthur Vigan,David Mouillet,Kjetil Dohlen,Raffaele Gratton,Anthony Boccaletti,Jean-François Sauvage,Jean-François Sauvage,H. M. Schmid,Maud Langlois,Maud Langlois,Cyril Petit,Andrea Baruffolo,M. Feldt,Julien Milli,Zahed Wahhaj,L. Abe,U. Anselmi,Jacopo 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,Julien Charton,Gael Chauvin,Gael Chauvin,Riccardo Claudi,Anne Costille,V. De Caprio,J. de Boer,A. Delboulbe,Silvano Desidera,Carsten Dominik,Mark Downing,O. Dupuis,Christophe Fabron,Daniela Fantinel,G. Farisato,Philippe Feautrier,Enrico Fedrigo,Thierry Fusco,Thierry Fusco,P. Gigan,Christian Ginski,Christian Ginski,Julien Girard,Julien Girard,Enrico Giro,D. Gisler,L. Gluck,Cecile Gry,Th. Henning,Norbert 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,Patrice 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,P. Rabou,Joany Andreina Manjarres Ramos,J.-M. Reess,F. Rigal,S. Rochat,Ronald Roelfsema,Gérard Rousset,A. Roux,Michel Saisse,Bernardo Salasnich,E. Sant'Ambrogio,Salvo Scuderi,Damien Ségransan,Arnaud Sevin,Ralf Siebenmorgen,Christian Soenke,Eric Stadler,Marcos Suarez,D. Tiphène,Massimo Turatto,Stéphane Udry,Farrokh Vakili,L. B. F. M. Waters,L. B. F. M. Waters,L. Weber,Francois Wildi,Gérard Zins,Alice Zurlo,Alice Zurlo +120 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 discussed by the authors.
Journal ArticleDOI
Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk
André Müller,Miriam Keppler,Th. Henning,Matthias Samland,Gael Chauvin,Gael Chauvin,Hervé Beust,Anne-Lise Maire,Karan Molaverdikhani,R. van Boekel,Myriam Benisty,Myriam Benisty,Anthony Boccaletti,M. Bonnefoy,Faustine Cantalloube,Benjamin Charnay,Jean-Loup Baudino,M. Gennaro,Z. C. Long,Anthony Cheetham,Silvano Desidera,M. Feldt,Thierry Fusco,Thierry Fusco,Julien Girard,Julien Girard,R. G. Gratton,Janis Hagelberg,Markus Janson,Markus Janson,Anne-Marie Lagrange,Maud Langlois,Maud Langlois,C. Lazzoni,R. Ligi,Francois Menard,Dino Mesa,Dino Mesa,Michael Meyer,Michael Meyer,P. Mollière,Christoph Mordasini,Thibaut Moulin,A. Pavlov,N. Pawellek,N. Pawellek,Sascha P. Quanz,Joany Andreina Manjarres Ramos,Daniel Rouan,E. Sissa,Eric Stadler,Arthur Vigan,Zahed Wahhaj,L. Weber,Alice Zurlo,Alice Zurlo +55 more
TL;DR: In this article, the spectral properties of PDS 70 b have been characterized using spectrophotometry of the entire near-infrared range (0.96-3.8 μ m).
Journal ArticleDOI
Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk
André Müller,Miriam Keppler,Th. Henning,M. Samland,Gael Chauvin,H. Beust,Anne-Lise Maire,Karan Molaverdikhani,R. vanBoekel,Myriam Benisty,Anthony Boccaletti,M. Bonnefoy,Faustine Cantalloube,Benjamin Charnay,Jean-Loup Baudino,M. Gennaro,Z. C. Long,Anthony Cheetham,Silvano Desidera,M. Feldt,Thierry Fusco,Julien Girard,R. G. Gratton,Janis Hagelberg,Markus Janson,Anne-Marie Lagrange,Maud Langlois,C. Lazzoni,R. Ligi,Francois Menard,Dino Mesa,Michael Meyer,Paul Mollière,C. Mordasini,Thibaut Moulin,A. Pavlov,N. Pawellek,Sascha P. Quanz,Juan-Luis Ramos,D. Rouan,E. Sissa,Eric Stadler,Arthur Vigan,Zahed Wahhaj,L. Weber,Alice Zurlo +45 more
TL;DR: In this paper, the spectral energy distribution of PDS 70 b indicates a temperature typical for young giant planets and the detailed atmospheric analysis indicates that a circumplanetary disk may contribute to the total planet flux.
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