Discovery of a warm, dusty giant planet around HIP 65426
Gael Chauvin,Gael Chauvin,Silvano Desidera,Anne-Marie Lagrange,Arthur Vigan,Raffaele Gratton,Maud Langlois,Maud Langlois,M. Bonnefoy,Jean-Luc Beuzit,M. Feldt,David Mouillet,Michael Meyer,Michael Meyer,Anthony Cheetham,Beth Biller,Anthony Boccaletti,Valentina D'Orazi,Raphaël Galicher,Janis Hagelberg,Anne-Lise Maire,Dino Mesa,Johan Olofsson,Johan Olofsson,Matthias Samland,T. Schmidt,E. Sissa,Mariangela Bonavita,Benjamin Charnay,M. Cudel,S. Daemgen,Philippe Delorme,P. Janin-Potiron,Markus Janson,Markus Janson,Miriam Keppler,H. Le Coroller,R. Ligi,G.-D. Marleau,G.-D. Marleau,S. Messina,Paul Mollière,Christoph Mordasini,Christoph Mordasini,André Müller,S. Peretti,C. Perrot,L. Rodet,Daniel Rouan,Alice Zurlo,Alice Zurlo,Carsten Dominik,Th. Henning,Francois Menard,H. M. Schmid,Massimo Turatto,Stéphane Udry,Farrokh Vakili,Lyu Abe,Jacopo Antichi,Andrea Baruffolo,Pierre Baudoz,J. Baudrand,P. Blanchard,Andreas Bazzon,Tristan Buey,Marcel Carbillet,M. Carle,Julien Charton,Enrico Cascone,Riccardo Claudi,Anne Costille,A. Deboulbe,V. De Caprio,Kjetil Dohlen,Daniela Fantinel,P. Feautrier,Thierry Fusco,P. Gigan,Enrico Giro,D. Gisler,L. Gluck,Norbert Hubin,Emmanuel Hugot,M. Jaquet,M. Kasper,F. Madec,Yves Magnard,Patrice Martinez,D. Maurel,D. Le Mignant,O. Möller-Nilsson,M. Llored,Thibaut Moulin,Alain Origne,A. Pavlov,D. Perret,Cyril Petit,J. Pragt,Pascal Puget,P. Rabou,Joany Andreina Manjarres Ramos,R. Rigal,S. Rochat,Ronald Roelfsema,Gérard Rousset,A. Roux,Bernardo Salasnich,Jean-François Sauvage,Arnaud Sevin,Christian Soenke,Eric Stadler,M. Suarez,L. Weber,Francois Wildi,S. Antoniucci,Jean-Charles Augereau,Jean-Loup Baudino,Wolfgang Brandner,N. Engler,Julien Girard,Julien Girard,Cecile Gry,Quentin Kral,Quentin Kral,T. Kopytova,T. Kopytova,T. Kopytova,Eric Lagadec,Julien Milli,Julien Milli,C. Moutou,C. Moutou,Joshua E. Schlieder,Joshua E. Schlieder,Judit Szulágyi,C. Thalmann,Zahed Wahhaj,Zahed Wahhaj +138 more
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In this article, the authors used the IRDIS dual-band imager and the IFS integral field spectrograph of SPHERE to acquire high-contrast coronagraphic differential near-infrared images and spectra of the young A2 star HIP.Abstract:
Aims. The SHINE program is a high-contrast near-infrared survey of 600 young, nearby stars aimed at searching for and characterizing new planetary systems using VLT/SPHERE’s unprecedented high-contrast and high-angular-resolution imaging capabilities. It is also intended to place statistical constraints on the rate, mass and orbital distributions of the giant planet population at large orbits as a function of the stellar host mass and age to test planet-formation theories.
Methods. We used the IRDIS dual-band imager and the IFS integral field spectrograph of SPHERE to acquire high-contrast coronagraphic differential near-infrared images and spectra of the young A2 star HIP 65426. It is a member of the ~17 Myr old Lower Centaurus-Crux association.
Results. At a separation of 830 mas (92 au projected) from the star, we detect a faint red companion. Multi-epoch observations confirm that it shares common proper motion with HIP 65426. Spectro-photometric measurements extracted with IFS and IRDIS between 0.95 and 2.2 μm indicate a warm, dusty atmosphere characteristic of young low-surface-gravity L5-L7 dwarfs. Hot-start evolutionary models predict a luminosity consistent with a 6–12 MJup, Teff = 1300–1600 K and R = 1.5 ± 0.1 RJup giant planet. Finally, the comparison with Exo-REM and PHOENIX BT-Settl synthetic atmosphere models gives consistent effective temperatures but with slightly higher surface gravity solutions of log (g) = 4.0–5.0 with smaller radii (1.0–1.3 RJup).
Conclusions. Given its physical and spectral properties, HIP 65426 b occupies a rather unique placement in terms of age, mass, and spectral-type among the currently known imaged planets. It represents a particularly interesting case to study the presence of clouds as a function of particle size, composition, and location in the atmosphere, to search for signatures of non-equilibrium chemistry, and finally to test the theory of planet formation and evolution.read more
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The GJ 504 system revisited. Combining interferometric, radial velocity, and high contrast imaging data
Mickael Bonnefoy,Karine Perraut,Anne-Marie Lagrange,P. Delorme,Arthur Vigan,Michael R. Line,L. Rodet,Ch. Ginski,Denis Mourard,Gabriel-Dominique Marleau,Matthias Samland,Pascal Tremblin,R. Ligi,Faustine Cantalloube,Paul Mollière,Benjamin Charnay,Masayuki Kuzuhara,Markus Janson,Caroline V. Morley,D. Homeier,Valentina D'Orazi,Hubert Klahr,C. Mordasini,Baptiste Lavie,Baptiste Lavie,Jean-Loup Baudino,Jean-Loup Baudino,H. Beust,S. Peretti,A. Musso Bartucci,Dino Mesa,Bruno Bézard,A. Boccaletti,Raphaël Galicher,Janis Hagelberg,Janis Hagelberg,Silvano Desidera,Beth Biller,Anne-Lise Maire,F. Allard,S. Borgniet,J. Lannier,N. Meunier,M. Desort,Evelyne Alecian,G. Chauvin,G. Chauvin,Maud Langlois,Th. Henning,Laurent M. Mugnier,David Mouillet,R. G. Gratton,Timothy D. Brandt,M. Mc Elwain,J.-L. Beuzit,Motohide Tamura,Yasunori Hori,Wolfgang Brandner,Esther Buenzli,Anthony Cheetham,M. Cudel,M. Feldt,M. Kasper,M. Kasper,Miriam Keppler,T. Kopytova,T. Kopytova,Michael Meyer,C. Perrot,D. Rouan,Graeme Salter,T. O. B. Schmidt,E. Sissa,Alice Zurlo,Alice Zurlo,Francois Wildi,P. Blanchard,V. De Caprio,A. Delboulbé,D. Maurel,T. Moulin,A. Pavlov,P. Rabou,Joany Andreina Manjarres Ramos,R. Roelfsema,G. Rousset,E. Stadler,F. Rigal,L. Weber +88 more
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A self-consistent cloud model for brown dwarfs and young giant exoplanets: comparison with photometric and spectroscopic observations
Benjamin Charnay,Bruno Bézard,Jean-Loup Baudino,M. Bonnefoy,Anthony Boccaletti,Raphael Galicher +5 more
TL;DR: In this article, a simple, physical and self-consistent cloud model for brown dwarfs and young giant exoplanets was developed, which reproduces the L-T transition due to the condensation of silicate and iron clouds below the visible/near IR photosphere.
Journal ArticleDOI
PynPoint: a modular pipeline architecture for processing and analysis of high-contrast imaging data
Tomas Stolker,Markus J. Bonse,Sascha P. Quanz,Adam Amara,G. Cugno,Alexander J. Bohn,Anna Boehle +6 more
TL;DR: PynPoint as mentioned in this paper is a data-reduction pipeline for processing and analysis of high-contrast imaging data obtained with pupil-stabilized observations, which is particularly suitable for the 3-5 μm wavelength range where typically thousands of frames have to be processed and an accurate subtraction of the thermal background emission is critical.
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Post-conjunction detection of β Pictoris b with VLT/SPHERE
A. M. Lagrange,Anthony Boccaletti,Maud Langlois,Maud Langlois,Gael Chauvin,Gael Chauvin,Raffaele Gratton,H. Beust,Silvano Desidera,Julien Milli,Mickael Bonnefoy,Anthony Cheetham,M. Feldt,Michael Meyer,Michael Meyer,Arthur Vigan,Beth Biller,Beth Biller,Mariangela Bonavita,Mariangela Bonavita,J.-L. Baudino,Faustine Cantalloube,M. Cudel,S. Daemgen,P. Delorme,Valentina D'Orazi,Julien Girard,C. Fontanive,C. Fontanive,Janis Hagelberg,Markus Janson,Markus Janson,Miriam Keppler,T. Koypitova,Raphaël Galicher,J. Lannier,H. Le Coroller,R. Ligi,R. Ligi,Anne-Lise Maire,Dino Mesa,S. Messina,A. Mueller,S. Peretti,C. Perrot,Daniel Rouan,Graeme Salter,Matthias Samland,T. Schmidt,E. Sissa,Alice Zurlo,Alice Zurlo,Jean-Luc Beuzit,D. Mouillet,Carsten Dominik,Th. Henning,Eric Lagadec,François Ménard,H. M. Schmid,Massimo Turatto,Stéphane Udry,Alexander J. Bohn,Benjamin Charnay,C. A. Gomez Gonzales,Cecile Gry,Matthew A. Kenworthy,Quentin Kral,Christoph Mordasini,C. Moutou,G. van der Plas,Joshua E. Schlieder,Joshua E. Schlieder,L. Abe,J. Antichi,Andrea Baruffolo,Pierre Baudoz,J. Baudrand,P. Blanchard,Andreas Bazzon,Tristan Buey,M. Carbillet,M. Carle,J. Charton,Enrico Cascone,Riccardo Claudi,Anne Costille,A. Deboulbe,V. De Caprio,Kjetil Dohlen,Daniela Fantinel,P. Feautrier,Thierry Fusco,P. Gigan,Enrico Giro,D. Gisler,L. Gluck,Norbert Hubin,Emmanuel Hugot,M. Jaquet,M. Kasper,F. Madec,Yves Magnard,P. Martinez,D. Maurel,D. Le Mignant,O. Möller-Nilsson,M. Llored,Thibaut Moulin,Alain Origne,A. Pavlov,D. Perret,Cyril Petit,J. Pragt,Judit Szulágyi,Francois Wildi +114 more
TL;DR: In this article, the authors used SPHERE at the VLT to precisely monitor the orbital motion of beta Pictoris b since first light of the instrument in 2014, and were able to monitor the planet until November 2016, when its angular separation became too small (125 mas, i.e., 1.6 au) and prevented further detection.
Journal ArticleDOI
Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a Zernike phase-mask sensor. III. On-sky validation in VLT/SPHERE
Arthur Vigan,Mamadou N'Diaye,Kjetil Dohlen,Jean-François Sauvage,Julien Milli,Gerard Zins,Cyril Petit,Z. Wahhaj,Faustine Cantalloube,A. Caillat,A. Costille,J. Le Merrer,Alexis Carlotti,Jean-Luc Beuzit,David Mouillet +14 more
TL;DR: In this paper, the authors used a Zernike wavefront sensor called ZELDA for detecting NCPAs in VLT/SPHERE and their compensation, and showed that the NCA compensation can attenuate the amount of aberration by a factor of approximately two.
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Anthony G. A. Brown,Antonella Vallenari,T. Prusti,J. H. J. de Bruijne,C. Babusiaux,Coryn A. L. Bailer-Jones,M. Biermann,D. W. Evans,L. Eyer,F. Jansen,Carme Jordi,Sergei A. Klioner,U. Lammers,Lennart Lindegren,Xavier Luri,Francois Mignard,C. Panem,Dimitri Pourbaix,Sofia Randich,P. Sartoretti,H. I. Siddiqui,Caroline Soubiran,F. van Leeuwen,Nicholas A. Walton,Frédéric Arenou,Ulrich Bastian,Mark Cropper,R. Drimmel,D. Katz,M. G. Lattanzi,Joost M. Bakker,C. Cacciari,J. Castañeda,L. Chaoul,N. Cheek,F. De Angeli,C. Fabricius,Raphael Guerra,B. Holl,E. Masana,R. Messineo,Nami Mowlavi,K. Nienartowicz,P. Panuzzo,J. Portell,M. Riello,George M. Seabroke,Paolo Tanga,F. Thévenin,G. Gracia-Abril,G. Comoretto,M. Garcia-Reinaldos,D. Teyssier,Martin Altmann,Rene Andrae,M. Audard,I. Bellas-Velidis,K. Benson,Jérôme Berthier,R. Blomme,P. Burgess,G. Busso,Benoit Carry,Alberto Cellino,G. Clementini,M. Clotet,O. Creevey,M. Davidson,J. De Ridder,Ludovic Delchambre,A. Dell'Oro,C. Ducourant,J. Fernández-Hernández,Morgan Fouesneau,Yves Fremat,Laurent Galluccio,Miguel García-Torres,J. González-Núñez,J. J. González-Vidal,Eric Gosset,Leanne P. Guy,J.-L. Halbwachs,Nigel Hambly,D. L. Harrison,Jose M Hernandez,Daniel Hestroffer,S. T. Hodgkin,A. Hutton,G. Jasniewicz,A. Jean-Antoine-Piccolo,Stefan Jordan,Andreas Korn,Alberto Krone-Martins,A. C. Lanzafame,T. Lebzelter,W. Löffler,Minia Manteiga,P. M. Marrese,J. M. Martín-Fleitas,André Moitinho,A. Mora,Karri Muinonen,J. Osinde,E. Pancino,T. Pauwels,J.-M. Petit,Alejandra Recio-Blanco,P. J. Richards,L. Rimoldini,Annie C. Robin,L. M. Sarro,Christos Siopis,M. J. S. Smith,Alessandro Sozzetti,Maria Süveges,J. Torra,W. van Reeven,U. Abbas,A. Abreu Aramburu,S. Accart,Conny Aerts,G. Altavilla,M. A. Álvarez,R. Alvarez,João Alves,Richard I. Anderson,Alexandre Humberto Andrei,E. Anglada Varela,E. Antiche,Teresa Antoja,Bernardino Arcay,Tri L. Astraatmadja,N. Bach,S. G. Baker,L. Balaguer-Núñez,P. Balm,C. Barache,C. Barata,D. Barbato,F. Barblan,Paul S. Barklem,David Barrado,M. Barros,M. A. Barstow,S. Bartholomé Muñoz,J.-L. Bassilana,Ugo Becciani,M. Bellazzini,A. Berihuete,Stefano Bertone,Luciana Bianchi,O. Bienaymé,S. Blanco-Cuaresma,T. Boch,C. Boeche,Alex Bombrun,R. Borrachero,Diego Bossini,S. Bouquillon,G. Bourda,Angela Bragaglia,L. Bramante,Maarten A. Breddels,Alessandro Bressan,N. Brouillet,T. Brüsemeister,E. Brugaletta,B. Bucciarelli,A. Burlacu,D. Busonero,A. G. Butkevich,R. Buzzi,Elisabetta Caffau,R. Cancelliere,G. Cannizzaro,Tristan Cantat-Gaudin,R. Carballo,T. Carlucci,J. M. Carrasco,Laia Casamiquela,Marco Castellani,Alfred Castro-Ginard,P. Charlot,L. Chemin,Andrea Chiavassa,G. Cocozza,G. Costigan,S. Cowell,F. Crifo,M. Crosta,C. Crowley,J. Cuypers,Carlos Dafonte,Yassine Damerdji,A. Dapergolas,P. David,M. David,P. de Laverny,F. De Luise,R. De March,D. de Martino,R. S. de Souza,A. de Torres,J. Debosscher,E. del Pozo,Marco Delbo,A. Delgado,H. E. Delgado,P. Di Matteo,S. Diakite,C. Diener,E. Distefano,C. Dolding,P. Drazinos,J. Durán,B. Edvardsson,H. Enke,K. Eriksson,P. Esquej,G. Eynard Bontemps,C. Fabre,M. Fabrizio,S. Faigler,A. J. Falcão,M. Farràs Casas,L. Federici,Grigori Fedorets,P. Fernique,F. Figueras,Francesco Filippi,K. Findeisen,A. Fonti,E. Fraile,Morgan Fraser,B. Frézouls,Mario Gai,S. Galleti,D. Garabato,F. García-Sedano,A. Garofalo,N. Garralda,A. Gavel,P. Gavras,J. Gerssen,R. Geyer,P. Giacobbe,Gerard Gilmore,S. Girona,G. Giuffrida,F. Glass,M. Gomes,Mikael Granvik,A. Gueguen,A. Guerrier,J. Guiraud,R. Gutiérrez-Sánchez,R. Haigron,Despina Hatzidimitriou,M. Hauser,M. Haywood,Ulrike Heiter,Amina Helmi,J. Heu,Thomas Hilger,David Hobbs,Werner Hofmann,G. Holland,H. E. Huckle,A. Hypki,V. Icardi,K. Janßen,G. Jevardat de Fombelle,Peter G. Jonker,Attila Juhasz,F. Julbe,A. Karampelas,A. Kewley,Joakim Klar,A. Kochoska,R. Kohley,K. Kolenberg,M. Kontizas,E. Kontizas,Sergey E. Koposov,Georges Kordopatis,Z. Kostrzewa-Rutkowska,P. Koubsky,Sébastien Lambert,Antonino F. Lanza,Y. Lasne,J.-B. Lavigne,Y. Le Fustec,C. Le Poncin-Lafitte,Yveline Lebreton,S. Leccia,N. Leclerc,I. Lecoeur-Taïbi,H. Lenhardt,F. Leroux,S. Liao,E. Licata,H. E. P. Lindstrøm,T. A. Lister,E. Livanou,A. Lobel,M. López,S. Managau,Robert G. Mann,G. Mantelet,O. Marchal,Jon Marchant,Marcella Marconi,S. Marinoni,G. Marschalkó,D. J. Marshall,M. Martino,Gábor Marton,Nicolas Mary,Davide Massari,G. Matijevič,Tsevi Mazeh,Paul J. McMillan,S. Messina,D. Michalik,N. R. Millar,D. Molina,R. Molinaro,L. Molnár,P. Montegriffo,R. Mor,R. Morbidelli,Thierry Morel,D. Morris,A. F. Mulone,T. Muraveva,I. Musella,Gijs Nelemans,Luciano Nicastro,L. Noval,W. O'Mullane,C. Ordénovic,D. Ordóñez-Blanco,P. Osborne,C. Pagani,I. Pagano,F. Pailler,H. Palacin,L. Palaversa,A. Panahi,Michał Pawlak,A. M. Piersimoni,F.-X. Pineau,E. Plachy,G. Plum,E. Poggio,E. Poujoulet,A. Prša,L. Pulone,E. Racero,S. Ragaini,N. Rambaux,M. Ramos-Lerate,S. Regibo,Céline Reylé,F. Riclet,V. Ripepi,A. Riva,A. Rivard,G. Rixon,T. Roegiers,M. Roelens,M. Romero-Gómez,Nicholas Rowell,F. Royer,L. Ruiz-Dern,G. Sadowski,T. Sagristà Sellés,Johannes Sahlmann,J. Salgado,E. Salguero,Nicoletta Sanna,Toni Santana-Ros,M. Sarasso,H. Savietto,M. Schultheis,Eva Sciacca,M. Segol,J. C. Segovia,Damien Ségransan,I.-C. Shih,L. Siltala,A. F. Silva,Richard L. Smart,K. W. Smith,E. Solano,F. Solitro,R. Sordo,Sonia Nieto,J. Souchay,A. Spagna,Federica Spoto,U. Stampa,Iain A. Steele,H. Steidelmüller,C. A. Stephenson,H. Stoev,F. F. Suess,Jean Surdej,Laszlo Szabados,E. Szegedi-Elek,D. Tapiador,F. Taris,G. Tauran,M. B. Taylor,Ramachrisna Teixeira,D. Terrett,P. Teyssandier,W. Thuillot,A. Titarenko,F. Torra Clotet,C. Turon,A. Ulla,E. Utrilla,S. Uzzi,M. Vaillant,G. Valentini,V. Valette,A. van Elteren,E. Van Hemelryck,M. van Leeuwen,M. Vaschetto,Alberto Vecchiato,Jovan Veljanoski,Y. Viala,D. Vicente,Steven S. Vogt,C. von Essen,H. Voss,V. Votruba,S. Voutsinas,G. Walmsley,M. Weiler,O. Wertz,T. Wevers,Łukasz Wyrzykowski,A. Yoldas,M. Žerjal,H. Ziaeepour,J. Zorec,Sven Zschocke,Shay Zucker,C. Zurbach,T. Zwitter +452 more