Planetary system and star formation science with non-redundant masking on JWST


Anand Sivaramakrishnan, David Lafreniere, Peter G. Tuthill, Michael J. Ireland James P. Lloyd, Frantz Martinache, Remi Soummer, Rene Doyon, Mathilde Beaulieu, Sebastien Parmentier, and Charles A. Beichman


STScI, University on Montreal, University of Sydney, Cornell University, Subaru Telescope, Stony Brook University, Caltech


Non-redundant masking (NRM) is a high contrast high resolution technique that is relevant for future space missions dedicated to either general astrophysics or extrasolar planetary astronomy. NRM mitigates not only atmospheric but instrument-induced speckle noise as we ll. The recently added mask in the Fine Guidance Sensor Tunable Filter Imager (FGS-TFI) o n the James Webb Space Telescope (JWST) will open up a search space between 50 and 400 ma s at wavelengths longer than 3.8um. Contrast of 1e4 will be achievable in a 10 ks exposu re of an M=7 star, with routine observing, target acquisition, and data calibration method s. NRM places protoplanets in Taurus as well as Jovians younger than 300Myr and more mass ive than 2 Jupiter masses orbiting solar type stars within JWST’s reach. Stars as bright as M=3 will also be observable, thus meshing well with next-generation ground-based extrem e adaptive optics coronagraphs.