Effectiveness Of Phase Dispersion Minimization In Gyrochronology

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Presentation transcript:

Effectiveness Of Phase Dispersion Minimization In Gyrochronology By: Jeremy Stone

Introduction Simulated Data Barry Lutz Telescope (BLT) Data Catalina Sky Survey Data

Example Light Curve Period = 7 days Amplitude = .05 Random error = 2% Magnitude Period (Minutes)

Light Curve Magnitude Period (Days)

Period 1 Theta .9 .8 0 2 4 6 8 10 Period (days)

HIP 19859 Target Star

HIP 19859 Light Curve Relative Magnitude Date (HJD)

HIP 19859 Period 1 .8 .6 Theta .4 .2 0 2 4 6 8 10 Period (Days)

Problems and Difficulties Weather Technical Issues Errors

Catalina Sky Survey

Catalina Sky Survey Started in 2005 Searching for near Earth objects Photometry on 198 million objects

HIP 3998 Light Curve

PDM 1.5 Theta 1 .95 .9 .85 .4 .6 .8 1 Period (Days)

Comparing Ages Collected ages from published papers Gyrochonology equation P(B-V,t) = f(B-V) * g(t) Where f(B-V) = (0.7725 ± 0.011) (B-V0-0.4)0.601±0.024 And g(t)=t0.5189±0.0070

Thanks NASA Space Grant Northern Arizona University Dr. Koerner Dr. Barlow and Kathleen Stigmon