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ExEP Technology Colloquium

December

16

The Standard Definitions and Evaluation Team Final Report: A Common Comparison of Exoplanet Yield
Dr. Rhonda Morgan (JPL)

The Exoplanet Standard Definition and Evaluation Team (ExSDET) has performed an unbiased exo-earth yield analysis of the LUVOIR and HabEx large mission concepts using a transparent and documented set of common inputs, assumptions and methodologies. The Standards Team established science metrics for yield to allow for a common comparison of the point-designs presented in the final reports: LUVOIR A (15 m on-axis), LUVOIR B (8 m off-axis), HabEx 4H (4 m with coronagraph and starshade), HabEx 4C (4 m with coronagraph only), and HabEx 3.2S (3.2m with starshade only). Yield analysis shows that these concepts can directly image and spectrally characterize earth-like planets in the habitable zone and that each architecture has complementary strengths and provides different quality of science products.

This talk presents an overview of the astrophysical assumptions and inputs, including recent developments such as the results of the LBTI HOSTS survey of exozodical dust brightness and the incorporation of radial velocity occurrence rates and application of theoretical constraints to the SAG-13 exoplanet occurrence rates. The approaches for the two different design reference mission simulation codes is described: Altruistic Yield Optimization (AYO) by Chris Stark and the Exoplanet Open-Source Imaging Mission Simulator (EXOSIMS) by Dmitry Savransky et al. The individual observing scenarios of each concept is delineated and the subsequent yield metrics descripted. The common comparison of LUVOIR to HabEx to the various metrics is presented, including the impact of observation scheduling. The talk concludes with a brief look at the potential impact of precursor knowledge from a potential extreme precision radial velocity instrument.

 
Date December 16, 2019
Start/End Time 02:00 PM - 03:30 PM
Location WebEx
Website https://exoplanets.nasa.gov/exep/technology/tech_colloquium/
Event Type Seminars/Colloquia
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