Presentation + Paper
13 December 2020 Integration time adjusted completeness
Dean Keithly, Dmitry Savransky
Author Affiliations +
Abstract
Future large-scale exoplanet direct-imaging missions will be capable of discovering and confirming Earth-Like exoplanets. The community has traditionally used the fraction of planets occurring within the visible limits of a telescope to evaluate these telescope designs. However, using only the instrument's geometric constraints and assuming a limiting planet magnitude ignores integration time requirements and can lead to overly optimistic performance predictions. In this paper, we present a new method for evaluating the fraction of observable planets that accounts for integration time. We also provide analytical methods for calculating the planet-star separation extrema for any given planet and analytical methods describing the true anomaly values at which a planet has a given planet-star separation. This new completeness calculation method explains some of the differences in the HabEx final report between EXOSIMS exoplanet yield numbers and completeness based yield estimates and attributes them to the lacking capabilities of current completeness based telescope performance evaluations. Our methods demonstrate that traditional completeness methods used in the final report and other exoplanet yield estimates overestimate yield between 32% and 141% compared to integration time adjusted completeness depending on the instrument capabilities and target.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dean Keithly and Dmitry Savransky "Integration time adjusted completeness", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 1144324 (13 December 2020); https://doi.org/10.1117/12.2562636
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Exoplanets

Planets

Detection and tracking algorithms

Binary data

Exoplanetary science

Back to Top