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Deep Limits on Planets Exterior to HR 8799’s Known Planetary System with the James Webb Space Telescope

  • Authors: Bryden Geoffrey, Llop-Sayson Jorge, Beichman Charles A., Balmer William O., Kammerer Jens, Leisenring Jarron M., Ygouf Marie, Krist John, Faramaz-Gorka Virginie, Greenbaum Alexandra Z., Girard Julien, Perrin Marshall, Pueyo Laurent, van der Marel Roeland, Meyer Michael, Johnstone Doug, Hodapp Klaus, Rieke Marcia

Bryden Geoffrey et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 2.

JWST/NIRCam image of the field around HR 8799 in the F444W filter. The data is shown with a linear stretch normalized by the pixel-to-pixel dispersion away from the source. While this stretch saturates the bright planets (b, c, and d), two sources that are a factor of ∼100 fainter (#1 and #2) are readily apparent. These sources are at projected separations of 3″ = 120 au (#1) and 6″ = 240 au (#2).

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