Not listed THE WFIRST-AFTA MISSION CURRENTLY INCLUDES THE PROVISION FOR A HIGH CONTRAST IMAGING INSTRUMENT WITH A PRIMARY GOAL OF DISCOVERING NEW LOW MASS EXOPLANETS AND CHARACTERIZING THEIR ATMOSPHERES. TO DATE EIGHT EXOPLANETARY SYSTEMS HAVE BEEN DISCOVERED VIA DIRECT IMAGING USING THE CURRENT GENERATION OF GROUND-BASED HIGH-CONTRAST FACILITIES. FIVE OF THOSE SYSTEMS INCLUDING THE ICONIC BETA PICTORIS AND HR 8799 SYSTEMS POSSESS INFRARED EXCESSES INDICATIVE OF THE PRESENCE OF CIRCUMSTELLAR DUST. DETAILED STUDIES OF DUST AND GAS MORPHOLOGY IN THE BETA PICTORIS DISK PROVIDED THE IMPETUS FOR SEARCHING FOR AND EVENTUALLY IMAGING THE PLANET. THESE STUDIES FURTHER SUGGEST THAT ADDITIONAL PLANETS ORBIT THE STAR BUT ARE BELOW CURRENT DETECTION THRESHOLDS. SUCH SYSTEMS WILL BE PRIME TARGETS FOR WFIRST-AFTA WHICH WILL OBTAIN VISUAL SPECTROSCOPY OF SEVERAL SPECTRAL FEATURES FROM MOLECULES IN THE EXOPLANET ATMOSPHERES INCLUDING CH4 H2O AND CO2. WE PROPOSE TO: (1) MODEL THE DUST IN EXOPLANETARY SYSTEMS WITH WELL CHARACTERIZED PLANETS AND INFRARED EXCESSES TO BETTER CONSTRAIN THE DUST GEOMETRY AND PARTICLE PROPERTIES (2) GENERATE SYNTHETIC WFIRST-AFTA IMAGES OF THESE DISKS WITH EMBEDDED KNOWN AND PUTATIVE PLANETS USING POINT-SPREAD-FUNCTIONS GENERATED BY JPL AND RUN OUR SIMULATIONS THOUGH A WFIRST-AFTA PIPELINE AND (3) EVALUATE THE SENSITIVITY OF WFIRST-AFTA TO KNOWN AND PUTATIVE PLANETS THAT HAVE A RANGE OF MASSES AND DISTANCES FROM THEIR HOST STARS. THE PROPOSED SIMULATIONS WILL ALSO ASSIST THE COMMUNITY IN UNDERSTANDING HOW WFIRSTAFTA WILL CONTRIBUTE TO OUR KNOWLEDGE OF DEBRIS DISKS AND THE ROLE THAT MINOR BODIES PLAY IN THE DELIVERY OF WATER INTO THE TERRESTRIAL PLANET ZONE. THE PROPOSED PROJECT IS COMPLEMENTARY TO THE EFFORTS CURRENTLY BEING CARRIED OUT BY THE SCIENCE DEFINITION TEAM (SDT) WHICH FOCUS ON SIMULATING PLANETS EMBEDDED IN TENUOUS DISKS ANALOGOUS TO THE ZODIACAL DUST SYSTEM IN OUR SOLAR SYSTEM THE EARTH'S RESONANT DUST RING AND THE HR 4796 DUST RING (THAT CONTAINS NO KNOWN PLANETS). ($45) 4/19/21 5 THE WFIRST-AFTA MISSION CURRENTLY INCLUDES THE PROVISION FOR A HIGH CONTRAST IMAGING INSTRUMENT WITH A PRIMARY GOAL OF DISCOVERING NEW, LOW MASS EXOPLANETS AND CHARACTERIZING THEIR ATMOSPHERES. TO DATE, EIGHT EXOPLANETARY SYSTEMS HAVE BEEN DISCOVERED VIA DIRECT IMAGING USING THE CURRENT GENERATION OF GROUND-BASED HIGH-CONTRAST FACILITIES. FIVE OF THOSE SYSTEMS, INCLUDING THE ICONIC BETA PICTORIS AND HR 8799 SYSTEMS, POSSESS INFRARED EXCESSES, INDICATIVE OF THE PRESENCE OF CIRCUMSTELLAR DUST. DETAILED STUDIES OF DUST AND GAS MORPHOLOGY IN THE BETA PICTORIS DISK PROVIDED THE IMPETUS FOR SEARCHING FOR, AND EVENTUALLY IMAGING THE PLANET. THESE STUDIES FURTHER SUGGEST THAT ADDITIONAL PLANETS ORBIT THE STAR, BUT ARE BELOW CURRENT DETECTION THRESHOLDS. SUCH SYSTEMS WILL BE PRIME TARGETS FOR WFIRST-AFTA, WHICH WILL OBTAIN VISUAL SPECTROSCOPY OF SEVERAL SPECTRAL FEATURES FROM MOLECULES IN THE EXOPLANET ATMOSPHERES INCLUDING CH4, H2O, AND CO2. WE PROPOSE TO: (1) MODEL THE DUST IN EXOPLANETARY SYSTEMS WITH WELL CHARACTERIZED PLANETS AND INFRARED EXCESSES TO BETTER CONSTRAIN THE DUST GEOMETRY AND PARTICLE PROPERTIES (2) GENERATE SYNTHETIC WFIRST-AFTA IMAGES OF THESE DISKS WITH EMBEDDED KNOWN AND PUTATIVE PLANETS USING POINT-SPREAD-FUNCTIONS GENERATED BY JPL, AND RUN OUR SIMULATIONS THOUGH A WFIRST-AFTA PIPELINE AND (3) EVALUATE THE SENSITIVITY OF WFIRST-AFTA TO KNOWN AND PUTATIVE PLANETS THAT HAVE A RANGE OF MASSES AND DISTANCES FROM THEIR HOST STARS. THE PROPOSED SIMULATIONS WILL ALSO ASSIST THE COMMUNITY IN UNDERSTANDING HOW WFIRSTAFTA WILL CONTRIBUTE TO OUR KNOWLEDGE OF DEBRIS DISKS AND THE ROLE THAT MINOR BODIES PLAY IN THE DELIVERY OF WATER INTO THE TERRESTRIAL PLANET ZONE. THE PROPOSED PROJECT IS COMPLEMENTARY TO THE EFFORTS CURRENTLY BEING CARRIED OUT BY THE SCIENCE DEFINITION TEAM (SDT), WHICH FOCUS ON SIMULATING PLANETS EMBEDDED IN TENUOUS DISKS, ANALOGOUS TO THE ZODIACAL DUST SYSTEM IN OUR SOLAR SYSTEM, THE EARTH'S RESONANT DUST RING, AND THE HR 4796 DUST RING (THAT CONTAINS NO KNOWN PLANETS). Funding Only Action ($45) 4/19/21 Not listed THE WFIRST-AFTA MISSION CURRENTLY INCLUDES THE PROVISION FOR A HIGH CONTRAST IMAGING INSTRUMENT WITH A PRIMARY GOAL OF DISCOVERING NEW LOW MASS EXOPLANETS AND CHARACTERIZING THEIR ATMOSPHERES. TO DATE EIGHT EXOPLANETARY SYSTEMS HAVE BEEN DISCOVERED VIA DIRECT IMAGING USING THE CURRENT GENERATION OF GROUND-BASED HIGH-CONTRAST FACILITIES. FIVE OF THOSE SYSTEMS INCLUDING THE ICONIC BETA PICTORIS AND HR 8799 SYSTEMS POSSESS INFRARED EXCESSES INDICATIVE OF THE PRESENCE OF CIRCUMSTELLAR DUST. DETAILED STUDIES OF DUST AND GAS MORPHOLOGY IN THE BETA PICTORIS DISK PROVIDED THE IMPETUS FOR SEARCHING FOR AND EVENTUALLY IMAGING THE PLANET. THESE STUDIES FURTHER SUGGEST THAT ADDITIONAL PLANETS ORBIT THE STAR BUT ARE BELOW CURRENT DETECTION THRESHOLDS. SUCH SYSTEMS WILL BE PRIME TARGETS FOR WFIRST-AFTA WHICH WILL OBTAIN VISUAL SPECTROSCOPY OF SEVERAL SPECTRAL FEATURES FROM MOLECULES IN THE EXOPLANET ATMOSPHERES INCLUDING CH4 H2O AND CO2. WE PROPOSE TO: (1) MODEL THE DUST IN EXOPLANETARY SYSTEMS WITH WELL CHARACTERIZED PLANETS AND INFRARED EXCESSES TO BETTER CONSTRAIN THE DUST GEOMETRY AND PARTICLE PROPERTIES; (2) GENERATE SYNTHETIC WFIRST-AFTA IMAGES OF THESE DISKS WITH EMBEDDED KNOWN AND PUTATIVE PLANETS USING POINT-SPREAD-FUNCTIONS GENERATED BY JPL AND RUN OUR SIMULATIONS THOUGH A WFIRST-AFTA PIPELINE; AND (3) EVALUATE THE SENSITIVITY OF WFIRST-AFTA TO KNOWN AND PUTATIVE PLANETS THAT HAVE A RANGE OF MASSES AND DISTANCES FROM THEIR HOST STARS. THE PROPOSED SIMULATIONS WILL ALSO ASSIST THE COMMUNITY IN UNDERSTANDING HOW WFIRSTAFTA WILL CONTRIBUTE TO OUR KNOWLEDGE OF DEBRIS DISKS AND THE ROLE THAT MINOR BODIES PLAY IN THE DELIVERY OF WATER INTO THE TERRESTRIAL PLANET ZONE. THE PROPOSED PROJECT IS COMPLEMENTARY TO THE EFFORTS CURRENTLY BEING CARRIED OUT BY THE SCIENCE DEFINITION TEAM (SDT) WHICH FOCUS ON SIMULATING PLANETS EMBEDDED IN TENUOUS DISKS ANALOGOUS TO THE ZODIACAL DUST SYSTEM IN OUR SOLAR SYSTEM THE EARTH'S RESONANT DUST RING AND THE HR 4796 DUST RING (THAT CONTAINS NO KNOWN PLANETS). $0 2/7/19 4 THE WFIRST-AFTA MISSION CURRENTLY INCLUDES THE PROVISION FOR A HIGH CONTRAST IMAGING INSTRUMENT WITH A PRIMARY GOAL OF DISCOVERING NEW, LOW MASS EXOPLANETS AND CHARACTERIZING THEIR ATMOSPHERES. TO DATE, EIGHT EXOPLANETARY SYSTEMS HAVE BEEN DISCOVERED VIA DIRECT IMAGING USING THE CURRENT GENERATION OF GROUND-BASED HIGH-CONTRAST FACILITIES. FIVE OF THOSE SYSTEMS, INCLUDING THE ICONIC BETA PICTORIS AND HR 8799 SYSTEMS, POSSESS INFRARED EXCESSES, INDICATIVE OF THE PRESENCE OF CIRCUMSTELLAR DUST. DETAILED STUDIES OF DUST AND GAS MORPHOLOGY IN THE BETA PICTORIS DISK PROVIDED THE IMPETUS FOR SEARCHING FOR, AND EVENTUALLY IMAGING THE PLANET. THESE STUDIES FURTHER SUGGEST THAT ADDITIONAL PLANETS ORBIT THE STAR, BUT ARE BELOW CURRENT DETECTION THRESHOLDS. SUCH SYSTEMS WILL BE PRIME TARGETS FOR WFIRST-AFTA, WHICH WILL OBTAIN VISUAL SPECTROSCOPY OF SEVERAL SPECTRAL FEATURES FROM MOLECULES IN THE EXOPLANET ATMOSPHERES INCLUDING CH4, H2O, AND CO2. WE PROPOSE TO: (1) MODEL THE DUST IN EXOPLANETARY SYSTEMS WITH WELL CHARACTERIZED PLANETS AND INFRARED EXCESSES TO BETTER CONSTRAIN THE DUST GEOMETRY AND PARTICLE PROPERTIES; (2) GENERATE SYNTHETIC WFIRST-AFTA IMAGES OF THESE DISKS WITH EMBEDDED KNOWN AND PUTATIVE PLANETS USING POINT-SPREAD-FUNCTIONS GENERATED BY JPL, AND RUN OUR SIMULATIONS THOUGH A WFIRST-AFTA PIPELINE; AND (3) EVALUATE THE SENSITIVITY OF WFIRST-AFTA TO KNOWN AND PUTATIVE PLANETS THAT HAVE A RANGE OF MASSES AND DISTANCES FROM THEIR HOST STARS. THE PROPOSED SIMULATIONS WILL ALSO ASSIST THE COMMUNITY IN UNDERSTANDING HOW WFIRSTAFTA WILL CONTRIBUTE TO OUR KNOWLEDGE OF DEBRIS DISKS AND THE ROLE THAT MINOR BODIES PLAY IN THE DELIVERY OF WATER INTO THE TERRESTRIAL PLANET ZONE. THE PROPOSED PROJECT IS COMPLEMENTARY TO THE EFFORTS CURRENTLY BEING CARRIED OUT BY THE SCIENCE DEFINITION TEAM (SDT), WHICH FOCUS ON SIMULATING PLANETS EMBEDDED IN TENUOUS DISKS, ANALOGOUS TO THE ZODIACAL DUST SYSTEM IN OUR SOLAR SYSTEM, THE EARTH'S RESONANT DUST RING, AND THE HR 4796 DUST RING (THAT CONTAINS NO KNOWN PLANETS). Other Administrative Action $0 2/7/19 Not listed THE WFIRST-AFTA MISSION CURRENTLY INCLUDES THE PROVISION FOR A HIGH CONTRAST IMAGING INSTRUMENT WITH A PRIMARY GOAL OF DISCOVERING NEW LOW MASS EXOPLANETS AND CHARACTERIZING THEIR ATMOSPHERES. TO DATE EIGHT EXOPLANETARY SYSTEMS HAVE BEEN DISCOVERED VIA DIRECT IMAGING USING THE CURRENT GENERATION OF GROUND-BASED HIGH-CONTRAST FACILITIES. FIVE OF THOSE SYSTEMS INCLUDING THE ICONIC BETA PICTORIS AND HR 8799 SYSTEMS POSSESS INFRARED EXCESSES INDICATIVE OF THE PRESENCE OF CIRCUMSTELLAR DUST. DETAILED STUDIES OF DUST AND GAS MORPHOLOGY IN THE BETA PICTORIS DISK PROVIDED THE IMPETUS FOR SEARCHING FOR AND EVENTUALLY IMAGING THE PLANET. THESE STUDIES FURTHER SUGGEST THAT ADDITIONAL PLANETS ORBIT THE STAR BUT ARE BELOW CURRENT DETECTION THRESHOLDS. SUCH SYSTEMS WILL BE PRIME TARGETS FOR WFIRST-AFTA WHICH WILL OBTAIN VISUAL SPECTROSCOPY OF SEVERAL SPECTRAL FEATURES FROM MOLECULES IN THE EXOPLANET ATMOSPHERES INCLUDING CH4 H2O AND CO2. WE PROPOSE TO: (1) MODEL THE DUST IN EXOPLANETARY SYSTEMS WITH WELL CHARACTERIZED PLANETS AND INFRARED EXCESSES TO BETTER CONSTRAIN THE DUST GEOMETRY AND PARTICLE PROPERTIES; (2) GENERATE SYNTHETIC WFIRST-AFTA IMAGES OF THESE DISKS WITH EMBEDDED KNOWN AND PUTATIVE PLANETS USING POINT-SPREAD-FUNCTIONS GENERATED BY JPL AND RUN OUR SIMULATIONS THOUGH A WFIRST-AFTA PIPELINE; AND (3) EVALUATE THE SENSITIVITY OF WFIRST-AFTA TO KNOWN AND PUTATIVE PLANETS THAT HAVE A RANGE OF MASSES AND DISTANCES FROM THEIR HOST STARS. THE PROPOSED SIMULATIONS WILL ALSO ASSIST THE COMMUNITY IN UNDERSTANDING HOW WFIRSTAFTA WILL CONTRIBUTE TO OUR KNOWLEDGE OF DEBRIS DISKS AND THE ROLE THAT MINOR BODIES PLAY IN THE DELIVERY OF WATER INTO THE TERRESTRIAL PLANET ZONE. THE PROPOSED PROJECT IS COMPLEMENTARY TO THE EFFORTS CURRENTLY BEING CARRIED OUT BY THE SCIENCE DEFINITION TEAM (SDT) WHICH FOCUS ON SIMULATING PLANETS EMBEDDED IN TENUOUS DISKS ANALOGOUS TO THE ZODIACAL DUST SYSTEM IN OUR SOLAR SYSTEM THE EARTH'S RESONANT DUST RING AND THE HR 4796 DUST RING (THAT CONTAINS NO KNOWN PLANETS). $0 4/13/18