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The JWST early release science program for direct observations of exoplanetary systems: III. Aperture masking interferometric observations of the star HIP 65426 at 3.8 μm

We present aperture masking interferometry (AMI) observations of the star HIP 65426 at 3.8 μm, as part of the JWST Direct Imaging Early Release Science program, obtained using the Near Infrared Imager and Slitless Spectrograph instrument. This mode provides access to very small inner working angles...

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Main Authors: Ray, Shrishmoy (Author) , Sallum, Steph (Author) , Hinkley, Sasha (Author) , Sivaramkrishnan, Anand (Author) , Cooper, Rachel (Author) , Kammerer, Jens (Author) , Greebaum, Alexandra Z. (Author) , Thatte, Deeparshi (Author) , Stolker, Tomas (Author) , Lazzoni, Cecilia (Author) , Tokovinin, Andrei (Author) , de Furio, Matthew (Author) , Factor, Samuel (Author) , Meyer, Michael (Author) , Stone, Jordan M. (Author) , Carter, Aarynn (Author) , Biller, Beth (Author) , Skemer, Andrew (Author) , Suárez, Genaro (Author) , Leisenring, Jarron M. (Author) , Perrin, Marshall D. (Author) , Kraus, Adam L. (Author) , Absil, Olivier (Author) , Balmer, William O. (Author) , Boccaletti, Anthony (Author) , Bonavita, Mariangela (Author) , Bonnefoy, Mickael (Author) , Booth, Mark (Author) , Bowler, Brendan P. (Author) , Briesemeister, Zackery W. (Author) , Bryan, Marta L. (Author) , Calissendorff, Per (Author) , Cantalloube, Faustine (Author) , Chauvin, Gael (Author) , Chen, Christine H. (Author) , Choquet, Elodie (Author) , Christiaens, Valentin (Author) , Cugno, Gabriele (Author) , Currie, Thayne (Author) , Danielski, Camilla (Author) , Dupuy, Trent J. (Author) , Faherty, Jacqueline K. (Author) , Fitzgerald, Michael P. (Author) , Fortney, Jonathan J. (Author) , Franson, Kyle (Author) , Girard, Julien H. (Author) , Grady, Carol A. (Author) , Gonzales, Eileen C. (Author) , Henning, Thomas (Author) , Hines, Dean C. (Author) , Hoch, Kielan K. W. (Author) , Hood, Callie E. (Author) , Howe, Alex R. (Author) , Janson, Markus (Author) , Kalas, Paul (Author) , Kennedy, Grant M. (Author) , Kenworthy, Matthew A. (Author) , Kervella, Pierre (Author) , Kuzuhara, Masayuki (Author) , Lagrange, Anne-Marie (Author) , Lagage, Pierre-Olivier (Author) , Lawson, Kellen (Author) , Lew, Ben W. P. (Author) , Liu, Michael C. (Author) , Liu, Pengyu (Author) , Llop-Sayson, Jorge (Author) , Lloyd, James P. (Author) , Macintosh, Bruce (Author) , Marino, Sebastian (Author) , Marley, Mark S. (Author) , Marois, Christian (Author) , Martinez, Raquel A. (Author) , Matthews, Brenda C. (Author) , Matthews, Elisabeth C. (Author) , Mawet, Dimitri (Author) , Mazoyer, Johan (Author) , McElwain, Michael W. (Author) , Metchev, Stanimir (Author) , Meyer, Michael R. (Author) , Miles, Brittany E. (Author) , Millar-Blanchaer, Maxwell A. (Author) , Molliere, Paul (Author) , Moran, Sarah E. (Author) , Morley, Caroline V. (Author) , Mukherjee, Sagnick (Author) , Palma-Bifani, Paulina (Author) , Pantin, Eric (Author) , Patapis, Polychronis (Author) , Petrus, Simon (Author) , Pueyo, Laurent (Author) , Quanz, Sascha P. (Author) , Quirrenbach, Andreas (Author) , Rebollido, Isabel (Author) , Adams Redai, Jea (Author) , Ren, Bin B. (Author) , Rickman, Emily (Author) , Samland, Matthias (Author) , Schlieder, Joshua E. (Author) , Schneider, Glenn (Author) , Stapelfeldt, Karl R. (Author) , Tamura, Motohide (Author) , Tan, Xianyu (Author) , Uyama, Taichi (Author) , Vigan, Arthur (Author) , Vasist, Malavika (Author) , Vos, Johanna M. (Author) , Wagner, Kevin (Author) , Wang, Jason J. (Author) , Ward-Duong, Kimberly (Author) , Whiteford, Niall (Author) , Wolff, Schuyler G. (Author) , Worthen, Kadin (Author) , Wyatt, Mark C. (Author) , Ygouf, Marie (Author) , Zhang, Xi (Author) , Zhang, Keming (Author) , Zhang, Zhoujian (Author) , Zhou, Yifan (Author) , Zurlo, Alice (Author) , Sargent, B. A. (Author) , Theissen, Christopher A. (Author) , Manjavacas, Elena (Author) , Lueber, Anna (Author) , Kitzmann, Daniel (Author) , Sutlieff, Ben J. (Author) , Betti, Sarah K. (Author)
Format: Article (Journal)
Language:English
Published: 2025 April 10
In: The astrophysical journal. Part 2, Letters
Year: 2025, Volume: 983, Issue: 1, Pages: 1-19
ISSN:2041-8213
DOI:10.3847/2041-8213/adaeb7
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.3847/2041-8213/adaeb7
Verlag, kostenfrei, Volltext: https://iopscience.iop.org/article/10.3847/2041-8213/adaeb7
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Author Notes:Shrishmoy Ray, Steph Sallum, Sasha Hinkley, Anand Sivaramkrishnan, Rachel Cooper, Jens Kammerer, Alexandra Z. Greebaum, Deeparshi Thatte, Tomas Stolker, Cecilia Lazzoni, Andrei Tokovinin, Matthew de Furio, Samuel Factor, Michael Meyer, Jordan M. Stone, Aarynn Carter, Beth Biller, Andrew Skemer, Genaro Suárez, Jarron M. Leisenring, Marshall D. Perrin, Adam L. Kraus, Olivier Absil, William O. Balmer, Anthony Boccaletti, Mariangela Bonavita, Mickael Bonnefoy, Mark Booth, Brendan P. Bowler, Zackery W. Briesemeister, Marta L. Bryan, Per Calissendorff, Faustine Cantalloube, Gael Chauvin, Christine H. Chen, Elodie Choquet, Valentin Christiaens, Gabriele Cugno, Thayne Currie, Camilla Danielski, Trent J. Dupuy, Jacqueline K. Faherty, Michael P. Fitzgerald, Jonathan J. Fortney, Kyle Franson, Julien H. Girard, Carol A. Grady, Eileen C. Gonzales, Thomas Henning, Dean C. Hines, Kielan K.W. Hoch, Callie E. Hood, Alex R. Howe, Markus Janson, Paul Kalas, Grant M. Kennedy, Matthew A. Kenworthy, Pierre Kervella, Masayuki Kuzuhara, Anne-Marie Lagrange, Pierre-Olivier Lagage, Kellen Lawson, Ben W.P. Lew, Michael C. Liu, Pengyu Liu, Jorge Llop-Sayson, James P. Lloyd, Bruce Macintosh, 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 R. 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, Simon Petrus, Laurent Pueyo, Sascha P. Quanz, Andreas Quirrenbach, Isabel Rebollido, Jea Adams Redai, Bin B. Ren, Emily Rickman, Matthias Samland, Joshua E. Schlieder, Glenn Schneider, Karl R. Stapelfeldt, Motohide Tamura, Xianyu Tan, Taichi Uyama, Arthur Vigan, Malavika Vasist, Johanna M. Vos, Kevin Wagner, Jason J. Wang, Kimberly Ward-Duong, Niall Whiteford, Schuyler G. Wolff, Kadin Worthen, Mark C. Wyatt, Marie Ygouf, Xi Zhang, Keming Zhang, Zhoujian Zhang, Yifan Zhou, Alice Zurlo, B.A. Sargent, Christopher A. Theissen, Elena Manjavacas, Anna Lueber, Daniel Kitzmann, Ben J. Sutlieff, and Sarah K. Betti
Description
Summary:We present aperture masking interferometry (AMI) observations of the star HIP 65426 at 3.8 μm, as part of the JWST Direct Imaging Early Release Science program, obtained using the Near Infrared Imager and Slitless Spectrograph instrument. This mode provides access to very small inner working angles (even separations slightly below the Michelson limit of 0.5λ/D for an interferometer), which are inaccessible with the classical inner working angles of the JWST coronagraphs. When combined with 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 5σ contrast of ΔmF380M ∼ 7.62 ± 0.13 mag relative to the host star at separations ​​​​​≳007, and the contrast deteriorates steeply at separations ≲007. However, we detect no additional companions interior to the known companion HIP 65426b (at separation ∼082 or ). Our observations thus rule out companions more massive than 10-12 MJup at separations ∼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 JWST is sensitive to planetary mass companions at close-in separations (≳007), even for thousands of more distant stars at ∼100 pc, in addition to the stars in the nearby young moving groups and associations, as stated in previous works. This result will allow the planning and successful execution of future observations to probe the inner regions of nearby stellar systems, opening an essentially unexplored parameter space.
Item Description:Online verfügbar: 09. April 2025
Gesehen am 18.11.2025
Physical Description:Online Resource
ISSN:2041-8213
DOI:10.3847/2041-8213/adaeb7

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