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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 6.

Throughput is shown as a function of radial distance to the center of the round coronagraphic mask (MASK335R). The inner working angle (IWA) of the mask (defined as 50% throughput) is at 0﹩\mathop{.}\limits^{\unicode{x02033}}﹩63 (J. E. Krist et al. 2009b). The locations of the four known planets are marked with dotted lines. Planets b and c are outside of the mask, but d is partially blocked (62% throughput) and planet e is well inside the IWA (14% throughput).

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