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We report observations with the JWST/NIRCam coronagraph of the Fomalhautsystem. This nearby A star hosts a complex debris disk system discovered by theIRAS satellite. Observations in F444W and F356W filters using the round 430Rmask achieve a contrast ratio of ~ 4 x 10-7 at 1'' and ~ 4 x 10-8 outside of3''. These observations reach a sensitivity limit <1 MJup across most of thedisk region. Consistent with the hypothesis that Fomalhaut b is not a massiveplanet but is a dust cloud from a planetesimal collision, we do not detect itin either F356W or F444W (the latter band where a Jovian-sized planet should bebright). We have reliably detected 10 sources in and around Fomalhaut and itsdebris disk, all but one of which are coincident with Keck or HST sources seenin earlier coronagraphic imaging; we show them to be background objects,including the "Great Dust Cloud" identified in MIRI data. However, one of theobjects, located at the edge of the inner dust disk seen in the MIRI images,has no obvious counterpart in imaging at earlier epochs and has a relativelyred [F356W]-[F444W]>0.7 mag (Vega) color. Whether this object is a backgroundgalaxy, brown dwarf, or a Jovian mass planet in the Fomalhaut system will bedetermined by an approved Cycle 2 follow-up program. Finally, we set upperlimits to any scattered light from the outer ring, placing a weak limit on thedust albedo at F356W and F444W.

Searching for Planets Orbiting Fomalhaut with JWST/NIRCam