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STScI Webcast

2017 JWST Proposal Planning Workshop

High Contrast Imaging of Planetary Systems with NIRCam and MIRI

Presented by: Marshall Perrin (STScI)
Category: Science Workshops   Duration: 30 minutes   Broadcast date: May 15, 2017
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High Contrast Imaging of Planetary Systems with NIRCam and MIRI Marshall Perrin (STScI) For studies of nearby planetary and brown dwarf companions and circumstellar disks, JWST offers a suite of coronagraphs optimized for wavelengths from 2 to 24 microns. Planning high contrast observations requires both performing the usual calculations of signal to noise and exposure times, as well as assessing observatory-level factors such as available roll angles and selection of PSF calibrator stars. I will describe two science cases from the Telescope Scientist GTO program as worked examples of developing high contrast investigations with JWST. As an example of characterizing a substellar companion, I'll present our goals and observing plan for MIRI coronagraphy of the 700 K methane-rich brown dwarf GJ 758 B. As a more complex example observing an extended source with multi-instrument coverage, we will use NIRCam and MIRI together to obtain eight band coronagraphy of the prototypical debris disk around Beta Pictoris, with filters chosen to allow characterization of disk constituents such as ices and organic tholins. This is part of a larger coordinated collaboration across the NIRCam, MIRI, and Telescope GTO teams

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Marshall Perrin's slides PDF document (.pdf)