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The \textit{JWST} Early Release Science Program for Direct Observations of Exoplanetary Systems III: Aperture Masking Interferometric Observations of the star HIP\,65426 at
3.8
 
μ
m
\boldsymbol{3.8\,\rm{\mu m}}
3.8
μ
m
Authors
Olivier Absil
William O. Balmer
+121Â more
Sarah K. Betti
Beth Biller
Anthony Boccaletti
Mariangela Bonavita
Mickael Bonnefoy
Mark Booth
Brendan P. Bowler
Zackery W. Briesemeister
Marta L. Bryan
Per Calissendorff
Faustine Cantalloube
Aarynn Carter
Gael Chauvin
Christine H. Chen
Elodie Choquet
Valentin Christiaens
Rachel Cooper
Gabriele Cugno
Thayne Currie
Camilla Danielski
Matthew de Furio
Trent J. Dupuy
Samuel Factor
Jacqueline K. Faherty
Michael P. Fitzgerald
Jonathan J. Fortney
Kyle Franson
Julien H. Girard
Eileen C. Gonzales
Carol A. Grady
Alexandra Z. Greebaum
Thomas Henning
Dean C. Hines
Sasha Hinkley
Kielan K. W. Hoch
Callie E. Hood
Alex R. Howe
Markus Janson
Paul Kalas
Jens Kammerer
Grant M. Kennedy
Matthew A. Kenworthy
Pierre Kervella
Daniel Kitzmann
Adam L. Kraus
Masayuki Kuzuhara
Pierre-Olivier Lagage
Anne-Marie Lagrange
Kellen Lawson
Cecilia Lazzoni
Jarron M. Leisenring
Ben W. P. Lew
Michael C. Liu
Pengyu Liu
Jorge Llop-Sayson
James P. Lloyd
Anna Lueber
Bruce Macintosh
Elena Manjavacas
Sebastian Marino
Mark S. Marley
Christian Marois
Raquel A. Martinez
Brenda C. Matthews
Elisabeth C. Matthews
Dimitri Mawet
Johan Mazoyer
Michael W. McElwain
Stanimir Metchev
Michael Meyer
Brittany E. Miles
Maxwell A. Millar-Blanchaer
Paul Molliere
Sarah E. Moran
Caroline V. Morley
Sagnick Mukherjee
Paulina Palma-Bifani
Eric Pantin
Polychronis Patapis
Marshall D. Perrin
Simon Petrus
Laurent Pueyo
Sascha P. Quanz
Andreas Quirrenbach
Shrishmoy Ray
Isabel Rebollido
Jea Adams Redai
Bin B. Ren
Emily Rickman
Steph Sallum
Matthias Samland
B. A. Sargent
Joshua E. Schlieder
Glenn Schneider
Anand Sivamarakrishnan
Andrew Skemer
Karl R. Stapelfeldt
Jordan M. Stone
Genaro Suarez
Ben J. Sutlieff
Motohide Tamura
Xianyu Tan
Deepashri Thatte
Christopher A. Theissen
Andrei Tokovinin
Taichi Uyama
Malavika Vasist
Arthur Vigan
Johanna M. Vos
Kevin Wagner
Jason J. Wang
Kimberly Ward-Duong
Niall Whiteford
Schuyler G. Wolff
Kadin Worthen
Mark C. Wyatt
Marie Ygouf
Keming Zhang
Xi Zhang
Zhoujian Zhang
Yifan Zhou
Publication date
17 October 2023
Publisher
View
on
arXiv
Abstract
We present aperture masking interferometry (AMI) observations of the star HIP 65426 at
3.8
 
μ
m
3.8\,\rm{\mu m}
3.8
μ
m
as a part of the \textit{JWST} Direct Imaging Early Release Science (ERS) program obtained using the Near Infrared Imager and Slitless Spectrograph (NIRISS) instrument. This mode provides access to very small inner working angles (even separations slightly below the Michelson limit of
0.5
λ
/
D
{}0.5\lambda/D
0.5
λ
/
D
for an interferometer), which are inaccessible with the classical inner working angles of the \textit{JWST} coronagraphs. When combined with \textit{JWST}'s unprecedented infrared sensitivity, this mode has the potential to probe a new portion of parameter space across a wide array of astronomical observations. Using this mode, we are able to achieve a contrast of
Δ
m
F
380
M
∼
7.8
\Delta m_{F380M}{\sim }7.8
Δ
m
F
380
M
​
∼
7.8
\,mag relative to the host star at a separation of
{\sim}0.07\arcsec
but detect no additional companions interior to the known companion HIP\,65426\,b. Our observations thus rule out companions more massive than
10{-}12\,\rm{M\textsubscript{Jup}}
at separations
∼
10
−
20
 
a
u
{\sim}10{-}20\,\rm{au}
∼
10
−
20
au
from HIP\,65426, a region out of reach of ground or space-based coronagraphic imaging. These observations confirm that the AMI mode on \textit{JWST} is sensitive to planetary mass companions orbiting at the water frost line, even for more distant stars at
∼
\sim
∼
100\,pc. This result will allow the planning and successful execution of future observations to probe the inner regions of nearby stellar systems, opening essentially unexplored parameter space.Comment: 15 pages, 9 figures, submitted to ApJ Letter
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Last time updated on 06/01/2024