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We have carried out high angular resolution near-infrared imaging and low-resolution (R~1000) spectroscopy of the nearest known brown dwarf, Eps Indi B, using the ESO VLT NAOS/CONICA adaptive optics system. We find it to be a close binary…

The discovery of Epsilon Indi Ba and Bb, a nearby binary brown dwarf system with a main-sequence companion, allows a concerted campaign to characterise the physical parameters of two T dwarfs providing benchmarks against which atmospheric…

The direct imaging of rocky exoplanets is one of the major science goals for upcoming large telescopes. The contrast requirement for imaging such planets is challenging. However, the mid-IR (InfraRed) regime provides the optimum contrast to…

Binaries are typically excluded from direct imaging exoplanet surveys. However, the recent findings of Kepler and radial velocity programs show that planets can and do form in binary systems. Here, we suggest that visual binaries offer…

Eps Ind A is one of the nearest sun-like stars, located only 3.6 pc away. It is known to host a binary brown dwarf companion, Eps Ind Ba/Bb, at a large projected separation of 6.7", but radial velocity measurements imply that an additional,…

Earth and Planetary Astrophysics · Physics 2015-05-13 M. Janson , D. Apai , M. Zechmeister , W. Brandner , M. Kuerster , M. Kasper , S. Reffert , M. Endl , D. Lafreniere , K. Geissler , S. Hippler , Th. Henning

Context. Though only a handful of extrasolar planets have been discovered via direct imaging, each of these discoveries had tremendous impact on our understanding of planetary formation, stellar formation and cool atmosphere physics. Aims.…

Solar and Stellar Astrophysics · Physics 2016-10-05 P. Delorme , J. Gagné , J. H. Girard , A. M. Lagrange , G. Chauvin , M-E. Naud , D. Lafrenière , R. Doyon , A. Riedel , M. Bonnefoy , L. Malo

We have identified a new early T dwarf only 3.6pc from the Sun, as a common proper motion companion (separation 1459AU) to the K5V star Epsilon Indi (HD209100). As such, Epsilon Indi B is one of the highest proper motion sources outside the…

Astrophysics · Physics 2009-11-07 R. -D. Scholz , M. J. McCaughrean , N. Lodieu , B. Kuhlbrodt

We present JWST Early Release Science (ERS) coronagraphic observations of the super-Jupiter exoplanet, HIP 65426 b, with the Near-Infrared Camera (NIRCam) from 2-5 $\mu$m, and with the Mid-Infrared Instrument (MIRI) from 11-16 $\mu$m. At a…

Earth and Planetary Astrophysics · Physics 2023-07-12 Aarynn L. Carter , Sasha Hinkley , Jens Kammerer , Andrew Skemer , Beth A. Biller , Jarron M. Leisenring , Maxwell A. Millar-Blanchaer , Simon Petrus , Jordan M. Stone , Kimberly Ward-Duong , Jason J. Wang , Julien H. Girard , Dean C. Hines , Marshall D. Perrin , Laurent Pueyo , William O. Balmer , Mariangela Bonavita , Mickael Bonnefoy , Gael Chauvin , Elodie Choquet , Valentin Christiaens , Camilla Danielski , Grant M. Kennedy , Elisabeth C. Matthews , Brittany E. Miles , Polychronis Patapis , Shrishmoy Ray , Emily Rickman , Steph Sallum , Karl R. Stapelfeldt , Niall Whiteford , Yifan Zhou , Olivier Absil , Anthony Boccaletti , Mark Booth , Brendan P. Bowler , Christine H. Chen , Thayne Currie , Jonathan J. Fortney , Carol A. Grady , Alexandra Z. Greenbaum , Thomas Henning , Kielan K. W. Hoch , Markus Janson , Paul Kalas , Matthew A. Kenworthy , Pierre Kervella , Adam L. Kraus , Pierre-Olivier Lagage , Michael C. Liu , Bruce Macintosh , Sebastian Marino , Mark S. Marley , Christian Marois , Brenda C. Matthews , Dimitri Mawet , Michael W. McElwain , Stanimir Metchev , Michael R. Meyer , Paul Molliere , Sarah E. Moran , Caroline V. Morley , Sagnick Mukherjee , Eric Pantin , Andreas Quirrenbach , Isabel Rebollido , Bin B. Ren , Glenn Schneider , Malavika Vasist , Kadin Worthen , Mark C. Wyatt , Zackery W. Briesemeister , Marta L. Bryan , Per Calissendorff , Faustine Cantalloube , Gabriele Cugno , Matthew De Furio , Trent J. Dupuy , Samuel M. Factor , Jacqueline K. Faherty , Michael P. Fitzgerald , Kyle Franson , Eileen C. Gonzales , Callie E. Hood , Alex R. Howe , Masayuki Kuzuhara , Anne-Marie Lagrange , Kellen Lawson , Cecilia Lazzoni , Ben W. P. Lew , Pengyu Liu , Jorge Llop-Sayson , James P. Lloyd , Raquel A. Martinez , Johan Mazoyer , Paulina Palma-Bifani , Sascha P. Quanz , Jea Adams Redai , Matthias Samland , Joshua E. Schlieder , Motohide Tamura , Xianyu Tan , Taichi Uyama , Arthur Vigan , Johanna M. Vos , Kevin Wagner , Schuyler G. Wolff , Marie Ygouf , Xi Zhang , Keming Zhang , Zhoujian Zhang

The upcoming launch of the James Webb Space Telescope (JWST) will dramatically increase our understanding of exoplanets, particularly through direct imaging. Microlensing and radial velocity surveys indicate that some M-dwarfs host long…

Earth and Planetary Astrophysics · Physics 2020-01-08 Jonathan Brande , Thomas Barclay , Joshua E. Schlieder , Eric D. Lopez , Elisa V. Quintana

With its near-to-mid-infrared high contrast imaging capabilities, JWST is ushering us into a golden age of directly imaging Jupiter-like planets. As the two closest cold Jupiters, $\varepsilon$ Ind A b and $\varepsilon$ Eridani b have…

Earth and Planetary Astrophysics · Physics 2023-08-28 Fabo Feng , R. Paul Butler , Steven S. Vogt , Bradford Holden , Yicheng Rui

Wide-orbit ($>$10 AU) gas giant planets shape the architecture of planetary systems, yet their occurrence rate remains poorly constrained. JWST has obtained the deepest mid-infrared images of nearby stars to date through substantial MIRI…

With JWST, we are directly imaging cold (~200-300K), solar-age giant exoplanets for the first time. At these temperatures many molecular features appear and water-ice clouds may condense and affect the emission spectrum; early photometric…

Astrometric monitoring of the Sirius binary system over the past century has yielded several predictions for an unseen third system component, the most recent one suggesting a \leq50 MJup object in a ~6.3-year orbit around Sirius A. Here we…

We demonstrate that the James Webb Space Telescope (JWST) can detect infrared (IR) excess from the blended light spectral energy distribution of spatially unresolved terrestrial exoplanets orbiting nearby white dwarfs. We find that JWST is…

The active K2V star $\epsilon$ Eri hosts the most nearby known extrasolar planet. With an angular separation of about 1" on average, and an age of a few to several hundred Myrs, $\epsilon$ Eri b is one of the prime candidates for becoming…

We carried out very deep VLT/SPHERE imaging polarimetry of the nearby system Eps Eri based on 38.5 hours of integration time with a 600 - 900 nm broadband filter to search for polarized scattered light from a planet or from circumstellar…

We present the direct imaging discovery of an extrasolar planet, or possible low-mass brown dwarf, at a projected separation of 55 +/- 2 AU (1.058 +/- 0.007 arcsec) from the B9-type star Kappa And. The planet was detected with Subaru/HiCIAO…

Planet(s) in binaries are unique architectures for testing predictions of planetary formation and evolution theories in very hostile environments. We used the IRDIS dual-band imager of SPHERE at VLT, and the speckle interferometric camera…

Giant planets on long period orbits around the nearest stars are among the easiest to directly image. Unfortunately these planets are difficult to fully constrain by indirect methods, e.g., transit and radial velocity (RV). In this study,…

We present preliminary astrometric results for the closest known brown dwarf binary to the Sun: Epsilon Indi Ba, Bb at a distance of 3.626 pc. Via ongoing monitoring of the relative separation of the two brown dwarfs (spectral types T1 and…

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