The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-Contrast Imaging of the Exoplanet HIP 65426 b from 2−16 µm - Archive ouverte HAL
Article Dans Une Revue The Astrophysical journal letters Année : 2023

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-Contrast Imaging of the Exoplanet HIP 65426 b from 2−16 µm

Aarynn Carter (1) , Sasha Hinkley (2) , Jens Kammerer (3) , Andrew Skemer (4) , Beth Biller (5) , Jarron Leisenring (4) , Maxwell Millar-Blanchaer (6) , Simon Petrus , Jordan Stone , Kimberly Ward-Duong (3) , Jason Wang (7) , Julien Girard (3) , Dean Hines (3) , Marshall Perrin , Laurent Pueyo (3) , William Balmer , Mariangela Bonavita (8) , Mickael Bonnefoy (9) , Gael Chauvin , Elodie Choquet (10) , Valentin Christiaens (11) , Camilla Danielski , Grant Kennedy , Elisabeth Matthews , Brittany Miles , Polychronis Patapis , Shrishmoy Ray , Emily Rickman , Steph Sallum , Karl Stapelfeldt , Niall Whiteford , Yifan Zhou , Olivier Absil , Anthony Boccaletti , Mark Booth , Brendan Bowler , Christine Chen , Thayne Currie , Jonathan Fortney , Carol Grady , Alexandra Greebaum , Thomas Henning , Kielan Hoch , Markus Janson , Paul Kalas , Matthew Kenworthy , Pierre Kervella , Adam Kraus , Pierre-Olivier Lagage , Michael Liu , Bruce Macintosh , Sebastian Marino , Mark Marley , Christian Marois , Brenda Matthews , Dimitri Mawet , Michael Mcelwain , Stanimir Metchev , Michael Meyer , Paul Molliere , Sarah Moran , Caroline Morley , Sagnick Mukherjee , Eric Pantin , Andreas Quirrenbach , Isabel Rebollido , Bin Ren , Glenn Schneider , Malavika Vasist , Kadin Worthen , Mark Wyatt , Zackery Briesemeister , Marta Bryan , Per Calissendorff , Faustine Cantalloube , Gabriele Cugno , Matthew de Furio , Trent Dupuy , Samuel Factor , Jacqueline Faherty , Michael Fitzgerald , Kyle Franson , Eileen Gonzales , Callie Hood , Alex Howe , Masayuki Kuzuhara , Anne-Marie Lagrange , Kellen Lawson , Cecilia Lazzoni , Ben Lew , Pengyu Liu , Jorge Llop-Sayson , James Lloyd , Raquel Martinez , Johan Mazoyer (12, 13) , Paulina Palma-Bifani , Sascha Quanz , Jea Adams Redai , Matthias Samland , Joshua Schlieder , Motohide Tamura , Xianyu Tan , Taichi Uyama , Arthur Vigan , Johanna Vos , Kevin Wagner , Schuyler Wolff , Marie Ygouf , Xi Zhang , Keming Zhang , Zhoujian Zhang
Aarynn Carter
University of California
Sasha Hinkley
University of Exeter
Jens Kammerer
Space Telescope Science Institute
Andrew Skemer
University of Arizona
Beth Biller
University of Edinburgh
Jarron Leisenring
University of Arizona
Maxwell Millar-Blanchaer
California Institute of Technology
Simon Petrus
Jordan Stone
Kimberly Ward-Duong
Space Telescope Science Institute
Jason Wang
University of Notre Dame [Indiana]
Julien Girard
Space Telescope Science Institute
Dean Hines
Space Telescope Science Institute
Marshall Perrin
Laurent Pueyo
  • Fonction : Auteur
Space Telescope Science Institute
William Balmer
Mariangela Bonavita
The Open University [Milton Keynes]
Mickael Bonnefoy
Institut de Planétologie et d'Astrophysique de Grenoble
Gael Chauvin
CV
Elodie Choquet
Laboratoire d'Astrophysique de Marseille
CV
Valentin Christiaens
Departamento de Astronomía
Camilla Danielski
Grant Kennedy
Elisabeth Matthews
Brittany Miles
Polychronis Patapis
Shrishmoy Ray
Emily Rickman
Steph Sallum
Karl Stapelfeldt
Niall Whiteford
Yifan Zhou
Olivier Absil
Anthony Boccaletti
CV
Mark Booth
Brendan Bowler
Christine Chen
Thayne Currie
Jonathan Fortney
Carol Grady
  • Fonction : Auteur
Alexandra Greebaum
Thomas Henning
Kielan Hoch
Markus Janson
Paul Kalas
Matthew Kenworthy
Pierre Kervella
CV
Adam Kraus
Pierre-Olivier Lagage
  • Fonction : Auteur
Michael Liu
Bruce Macintosh
Sebastian Marino
Mark Marley
Christian Marois
Brenda Matthews
Dimitri Mawet
Michael Mcelwain
Stanimir Metchev
Michael Meyer
Paul Molliere
Sarah Moran
Caroline Morley
Sagnick Mukherjee
Eric Pantin
Andreas Quirrenbach
  • Fonction : Auteur
Isabel Rebollido
Bin Ren
Glenn Schneider
Malavika Vasist
Kadin Worthen
Mark Wyatt
Zackery Briesemeister
Marta Bryan
Per Calissendorff
Faustine Cantalloube
CV
Gabriele Cugno
Matthew de Furio
Trent Dupuy
Samuel Factor
Jacqueline Faherty
Michael Fitzgerald
Kyle Franson
Eileen Gonzales
Callie Hood
Alex Howe
Masayuki Kuzuhara
Anne-Marie Lagrange
  • Fonction : Auteur
Kellen Lawson
Cecilia Lazzoni
Ben Lew
Pengyu Liu
Jorge Llop-Sayson
James Lloyd
  • Fonction : Auteur
Raquel Martinez
Johan Mazoyer
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics
Observatoire de Paris
CV
Paulina Palma-Bifani
Sascha Quanz
Jea Adams Redai
Matthias Samland
Joshua Schlieder
Motohide Tamura
Xianyu Tan
Taichi Uyama
Arthur Vigan
Johanna Vos
Kevin Wagner
Schuyler Wolff
Marie Ygouf
Xi Zhang
Keming Zhang
Zhoujian Zhang

Résumé

We present JWST Early Release Science coronagraphic observations of the super-Jupiter exoplanet, HIP 65426b, with the Near-Infrared Camera (NIRCam) from 2 to 5 μ m, and with the Mid-Infrared Instrument (MIRI) from 11 to 16 μ m. At a separation of ∼0.″82 (87 − 31 + 108 au), HIP 65426b is clearly detected in all seven of our observational filters, representing the first images of an exoplanet to be obtained by JWST, and the first-ever direct detection of an exoplanet beyond 5 μ m. These observations demonstrate that JWST is exceeding its nominal predicted performance by up to a factor of 10, depending on separation and subtraction method, with measured 5 σ contrast limits of ∼1 × 10 −5 and ∼2 × 10 −4 at 1″ for NIRCam at 4.4 μ m and MIRI at 11.3 μ m, respectively. These contrast limits provide sensitivity to sub-Jupiter companions with masses as low as 0.3 M Jup beyond separations of ∼100 au. Together with existing ground-based near-infrared data, the JWST photometry are fit well by a BT-SETTL atmospheric model from 1 to 16 μ m, and they span ∼97% of HIP 65426b's luminous range. Independent of the choice of model atmosphere, we measure an empirical bolometric luminosity that is tightly constrained between log L bol / L ⊙ = −4.31 and −4.14, which in turn provides a robust mass constraint of 7.1 ± 1.2 M Jup . In totality, these observations confirm that JWST presents a powerful and exciting opportunity to characterize the population of exoplanets amenable to high-contrast imaging in greater detail.

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Astrophysique [astro-ph]
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https://hal.science/hal-04208380

Soumis le : vendredi 15 septembre 2023-11:59:06

Dernière modification le : lundi 9 décembre 2024-03:28:06

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hal-04208380 , version 1 (15-09-2023)

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Aarynn Carter, Sasha Hinkley, Jens Kammerer, Andrew Skemer, Beth Biller, et al.. The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-Contrast Imaging of the Exoplanet HIP 65426 b from 2−16 µm. The Astrophysical journal letters, 2023, 951 (1), pp.L20. ⟨10.3847/2041-8213/acd93e⟩. ⟨hal-04208380⟩

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