methods: statistical; techniques: high angular resolution
Abstract :
[en] As planning for the next generation of high contrast imaging instruments (e.g., WFIRST, HabEx, and LUVOIR, TMT-PFI, EELT-EPICS) matures and second-generation ground-based extreme adaptive optics facilities (e.g., VLT-SPHERE, Gemini-GPI) finish their principal surveys, it is imperative that the performance of different designs, post-processing algorithms, observing strategies, and survey results be compared in a consistent, statistically robust framework. In this paper, we argue that the current industry standard for such comparisons—the contrast curve—falls short of this mandate. We propose a new figure of merit, the “performance map,” that incorporates three fundamental concepts in signal detection theory: the true positive fraction, the false positive fraction, and the detection threshold. By supplying a theoretical basis and recipe for generating the performance map, we hope to encourage the widespread adoption of this new metric across subfields in exoplanet imaging.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Jensen-Clem, Rebecca ; Astronomy Department, University of California, Berkeley, CA 94720, USA
Mawet, Dimitri ; Department of Astrophysics, California Institute of Technology, 1200 E. California Boulevard, Pasadena, CA 91101, USA
Gómez González, Carlos ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Belikov, Ruslan; NASA Ames Research Center, Moffett Boulevard, Moffett Field, CA 94035, USA
Currie, Thayne ; National Astronomical Observatory of Japan, Subaru Telescope, 650 A'ohoku Pl., Hilo, HI 96720, USA
Kenworthy, Matthew A. ; Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden, The Netherlands
Marois, Christian ; National Research Council of Canada Herzberg, 5071 West Saanich Road, Victoria, BC, V9E 2E7, Canada ; University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada
Mazoyer, Johan ; Johns Hopkins University, Zanvyl Krieger School of Arts and Sciences, Department of Physics and Astronomy, Bloomberg Center for Physics and Astronomy, 3400 North Charles Street, Baltimore, MD 21218, USA ; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD 21218, USA
Ruane, Garreth ; Department of Astrophysics, California Institute of Technology, 1200 E. California Boulevard, Pasadena, CA 91101, USA
Tanner, Angelle; Mississippi State University, Department of Physics & Astronomy, Hilbun Hall, Starkville, MS 39762, USA
