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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Journal ArticleDOI
Peering into the young planetary system AB Pic. Atmosphere, orbit, obliquity, and second planetary candidate
P. Palma-Bifani,Gael Chauvin,Mickael Bonnefoy,Patricio Rojo,S. Petrus,L. Rodet,Maud Langlois,F. Allard,Benjamin Charnay,C. Desgrange,Derek Homeier,Anne-Marie Lagrange,J. L. Beuzit,Pierre Baudoz,Anthony Boccaletti,A. Chomez,Philippe Delorme,Silvano Desidera,Markus Feldt,Christian Ginski,R. G. Gratton,Anne-Lise Maire,Michael Meyer,Matthias Samland,Ignas Snellen,Arthur Vigan,Yi Zhang +26 more
TL;DR: In this article , a spectrum of AB Pic b merging archival VLT/SINFONI K-band data, with published spectra at J and H-band and Lp-band (Magellan-AO), and photometric measurements (HST and Spitzer).
Study of the formation of circumbinary planets and comparison with SPHERE data
TL;DR: The aims of this work reside in the analysis of certain disk's features and the study of the possibility for the formation of circumbinary planets in this system through the direct comparison with observational data from the SPHERE instrument, installed in the VLT in Chile.
Journal ArticleDOI
Direct Imaging Discovery of a Young Brown Dwarf Companion to an A2V Star
Kevin Wagner,Daniel Apai,Markus Kasper,Melissa McClure,Massimo Robberto,Thayne Currie,Thayne Currie +6 more
TL;DR: In this article, the authors presented the discovery and spectroscopy of HIP 75056Ab, a companion directly imaged at a very small separation of 0.125 arcsec to an A2V star in the Scorpius-Centaurus OB2 association.
Proceedings ArticleDOI
Direct imaging and spectroscopy of exoplanetary systems with the JWST early release science program
Sasha Hinkley,Aarynn L. Carter,S. Ray,Beth Biller,Andrew J. Skemer,Elodie Choquet,Maxwell A. Millar-Blanchaer,Steph Sallum,Brittany E. Miles,Niall Whiteford,Polychronis Patapis,Marshall D. Perrin,Laurent Pueyo,Karl R. Stapelfeldt,Jason J. Wang,Kimberly Ward-Duong,Julien Girard,Dean C. Hines,C. Kammerer,Jarron Leisenring,Yifan Zhou,Michael Meyer,Michael C. Liu,Mickael Bonnefoy,S. Petrus,Mariangela Bonavita,Gael Chauvin,Christine Chen,Thayne Currie,Kielan K. W. Hoch,C. Lazzoni,Elisabeth Matthews,Michael W. McElwain,I. Rebollido,E. L. Rickman,O. Schneider,Anand Sivaramakrishnan,Jordan M. Stone +37 more
TL;DR: The 55-hour Early Release Science Program (ERSPSPP) as discussed by the authors uses all four JWST instruments to extend the characterisation of planetary mass companions to ∼15-20 μm as well as image a circumstellar disk in the mid-infrared with unprecedented sensitivity.
Journal ArticleDOI
Prospects for Directly Imaging Young Giant Planets at Optical Wavelengths.
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TL;DR: In this paper, the properties of young giant planet spectra in the optical and suggest that future space-based direct imaging missions should be considering young planets as a valuable and informative science case.
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Gaia Data Release 1 Summary of the astrometric, photometric, and survey properties
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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