The Astronomical Journal (Jan 2025)
The James Webb Interferometer: Space-based Interferometric Detections of PDS 70 b and c at 4.8 μm
- Dori Blakely,
- Doug Johnstone,
- Gabriele Cugno,
- Anand Sivaramakrishnan,
- Peter Tuthill,
- Ruobing Dong,
- Benjamin J. S. Pope,
- Loïc Albert,
- Max Charles,
- Rachel A. Cooper,
- Matthew De Furio,
- Louis Desdoigts,
- René Doyon,
- Logan Francis,
- Alexandra Z. Greenbaum,
- David Lafreniére,
- James P. Lloyd,
- Michael R. Meyer,
- Laurent Pueyo,
- Shrishmoy Ray,
- Joel Sánchez-Bermúdez,
- Anthony Soulain,
- Deepashri Thatte,
- William Thompson,
- Thomas Vandal
Affiliations
- Dori Blakely
- ORCiD
- Department of Physics and Astronomy, University of Victoria , 3800 Finnerty Road, Elliot Building, Victoria, BC V8P 5C2, Canada; NRC Herzberg Astronomy and Astrophysics , 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
- Doug Johnstone
- ORCiD
- Department of Physics and Astronomy, University of Victoria , 3800 Finnerty Road, Elliot Building, Victoria, BC V8P 5C2, Canada; NRC Herzberg Astronomy and Astrophysics , 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
- Gabriele Cugno
- ORCiD
- Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA
- Anand Sivaramakrishnan
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA; Astrophysics Department , American Museum of Natural History, 79th Street at Central Park West, New York, NY 10024, USA; Department of Physics and Astronomy, Johns Hopkins University , 3701 San Martin Drive, Baltimore, MD 21218, USA
- Peter Tuthill
- ORCiD
- Sydney Institute for Astronomy, School of Physics, University of Sydney , NSW 2006, Australia
- Ruobing Dong
- ORCiD
- Department of Physics and Astronomy, University of Victoria , 3800 Finnerty Road, Elliot Building, Victoria, BC V8P 5C2, Canada; Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China
- Benjamin J. S. Pope
- ORCiD
- School of Mathematics and Physics, University of Queensland , St Lucia, QLD 4072, Australia; University of Southern Queensland , Centre for Astrophysics, Toowoomba, QLD, Australia
- Loïc Albert
- ORCiD
- Trottier Institute for Research on Exoplanets, Département de Physique, Université de Montréal , 1375 Avenue Thérése-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
- Max Charles
- ORCiD
- Sydney Institute for Astronomy, School of Physics, University of Sydney , NSW 2006, Australia
- Rachel A. Cooper
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Matthew De Furio
- ORCiD
- Department of Astronomy, The University of Texas at Austin , 2515 Speedway Stop C1400, Austin, TX 78712, USA
- Louis Desdoigts
- ORCiD
- Sydney Institute for Astronomy, School of Physics, University of Sydney , NSW 2006, Australia
- René Doyon
- ORCiD
- Trottier Institute for Research on Exoplanets, Département de Physique, Université de Montréal , 1375 Avenue Thérése-Lavoie-Roux, Montréal, QC H2V 0B3, Canada; Observatoire du Mont-Mégantic, Université de Montréal , Montréal H3C 3J7, Canada
- Logan Francis
- ORCiD
- Leiden Observatory, Leiden University , PO Box 9513, 2300 RA Leiden, The Netherlands
- Alexandra Z. Greenbaum
- ORCiD
- IPAC , Caltech, 1200 East California Boulevard, Pasadena, CA 91125, USA
- David Lafreniére
- ORCiD
- Trottier Institute for Research on Exoplanets, Département de Physique, Université de Montréal , 1375 Avenue Thérése-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
- James P. Lloyd
- ORCiD
- Carl Sagan Institute/Department of Astronomy, Cornell University , Ithaca, NY 14853, USA
- Michael R. Meyer
- ORCiD
- Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA
- Laurent Pueyo
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Shrishmoy Ray
- ORCiD
- School of Mathematics and Physics, University of Queensland , St Lucia, QLD 4072, Australia
- Joel Sánchez-Bermúdez
- ORCiD
- Instituto de Astronomía, Universidad Nacional Autónoma de México , Apdo. Postal 70264, Ciudad de México, 04510, Mexico; Max-Planck-Institut für Astronomie , Königstuhl 17, D-69117 Heidelberg, Germany
- Anthony Soulain
- ORCiD
- Univ. Grenoble Alpes , CNRS, IPAG, 38000 Grenoble, France
- Deepashri Thatte
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- William Thompson
- ORCiD
- NRC Herzberg Astronomy and Astrophysics , 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
- Thomas Vandal
- ORCiD
- Trottier Institute for Research on Exoplanets, Département de Physique, Université de Montréal , 1375 Avenue Thérése-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
- DOI
- https://doi.org/10.3847/1538-3881/ad9b94
- Journal volume & issue
-
Vol. 169,
no. 3
p. 137
Abstract
We observed the planet-hosting system PDS 70 with the James Webb Interferometer, JWST's aperture masking interferometric mode within NIRISS. Observing with the F480M filter centered at 4.8 μ m, we simultaneously fit geometrical models to the outer disk and the two known planetary companions. We redetect the protoplanets PDS 70 b and c at a signal-to-noise ratio (SNR) of 14.7 and 7.0, respectively. Our photometry of both PDS 70 b and c provides tentative evidence of mid-IR circumplanetary disk emission through fitting spectral energy distribution models to these new measurements and those found in the literature. We also newly detect emission within the disk gap at an SNR of ~4, a position angle of $22{0}_{-15}^{+10}$ @, and an unconstrained separation within ~200 mas. Follow-up observations will be needed to determine the nature of this emission. We place a 5 σ upper limit of 208 ± 10 μ Jy on the flux of the candidate PDS 70 d at 4.8 μ m, which indicates that if the previously observed emission at shorter wavelengths is due to a planet, this putative planet has a different atmospheric composition than PDS 70 b or c. Finally, we place upper limits on emission from any additional planets in the disk gap. We find an azimuthally averaged 5 σ contrast upper limit >7 mag at separations greater than 110 mas. These are the deepest limits to date within ~250 mas at 4.8 μ m and the first space-based interferometric observations of this system.
Keywords
