NonMicrolensing Science from WFIRST Microlensing Data Andy Gould (Ohio State) WFIRST Seeing Better In Space (also weather) Bennett & Rhie 2002, ApJ, 574, 985 WFIRST Microlensing Field WFIRST “Microlensing” Survey Characteristics 40,000 images (52 sec) ● 2.8 sq.deg. ● 6 continuous 72day campaigns (at quadrature) ● 100 images per day ● SNR = 10^{0.4(HzeroH)} Hzero = 26.1 ● Gould 2014 JKAS, (almost) in press WFIRST vs. GAIA WFIRST vs GAIA Parallax Precision NonMicrolensing WFIRST Science: Ultraprecise Parallaxes H<14.0; < 0.3as; 1,000,000 stars ● H<19.6; < 3.7 as; 40,000,000 stars ● H<21.6; ) < 10as; 120,000,000 stars ● Gould, Huber, Penny, Stello, 2014 JKAS, sub. WFIRST Astrometric Information Flow
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