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18 th Conference on Gravitational Microlensing Microlensing Planetary and Binary Statistics from 2011-2013 Generation-II OGLE-MOA-Wise Microlensing Planetary.

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Presentation on theme: "18 th Conference on Gravitational Microlensing Microlensing Planetary and Binary Statistics from 2011-2013 Generation-II OGLE-MOA-Wise Microlensing Planetary."— Presentation transcript:

1 18 th Conference on Gravitational Microlensing Microlensing Planetary and Binary Statistics from Generation-II OGLE-MOA-Wise Microlensing Planetary and Binary Statistics from Generation-II OGLE-MOA-Wise Yossi Shvartzvald Tel-Aviv University with Dan Maoz, Matan Friedmann (TAU) in collaboration with OGLE, MOA, µFUN

2 18 th Conference on Gravitational Microlensing Microlensing statistics – snowline planet frequency Gould et al (6 planets): ~1/3 of stars have snowline-region giant planets ~1/6 of stars have solar-like planetary systems Sumi et al (10 planets): Neptunes are at least 3 times more common than Jupiters Cassan et al (3 planets+Gould10+Sumi10): ~1/6 host Jupiters ~1/2 host Neptunes ~2/3 host super-Earths

3 18 th Conference on Gravitational Microlensing Second generation survey A different approach: 1.Controlled experiment:  Untargeted survey, specific field (high mag + low mag)  Continuous coverage 2.Forward modeling for planet abundance:  Simulate the experiment  Define planetary anomaly detection threshold (not necessarily perfectly modeled events)  Compare data to simulation

4 18 th Conference on Gravitational Microlensing The generation-II network OGLE, Chile, 1.3m MOA, NZ, 1.8m Wise Obs., Israel, 1m

5 18 th Conference on Gravitational Microlensing The generation-II network Group OGLE MOA WISE

6 18 th Conference on Gravitational Microlensing Second generation microlensing survey 8 deg 2 of bulge with highest lensing rate covered quasi-continuously by all 3 telescopes cadences min

7 18 th Conference on Gravitational Microlensing What to expect from Generation II? a simulation: Monte-Carlo of many Solar- System-like planetary systems, host star properties matching those of bulge microlensing population, random inclinations. Shvartzvald & Maoz 2012 Simulating the experiment

8 18 th Conference on Gravitational Microlensing Simulating the experiment Ray trace through systems…… …search for planetary-type anomalies with same detection criteria as real data …add real sampling sequences, photometry errors…

9 18 th Conference on Gravitational Microlensing Shvartzvald & Maoz 2012 Simulation results: can detect ~15-20% of planets around microlensed stars; Simulating the experiment

10 18 th Conference on Gravitational Microlensing sample Sample Criteria: u 0 <=1 t 0 within Wise season Data from all 3 groups

11 18 th Conference on Gravitational Microlensing sample Sample Criteria: u 0 <=1 t 0 within Wise season Data from all 3 groups Events 245Sample

12 18 th Conference on Gravitational Microlensing Comparison to simulation - u 0 Shvartzvald & Maoz 2012 Simulation sample

13 18 th Conference on Gravitational Microlensing Comparison to simulation - t E Shvartzvald & Maoz 2012 Simulation sample

14 18 th Conference on Gravitational Microlensing t E distribution Sumi et al MOA-II sample

15 18 th Conference on Gravitational Microlensing Anomalous events Events 245Sample 29 (11.8%)Anomalous 8 (3.3%)Planetary Mass ratio

16 18 th Conference on Gravitational Microlensing Anomalous events Events 245Sample 29 (11.8%)Anomalous 8 (3.3%)Planetary Mass ratio Accounting for detection efficiency, >17% planetary system frequency

17 18 th Conference on Gravitational Microlensing Gen-II planets ??? From the 16 th microlensing conference in Pasadena

18 18 th Conference on Gravitational Microlensing Gen-II planets MOA Shvartzvald et al. 2014

19 18 th Conference on Gravitational Microlensing Gen-II planets MOA Shvartzvald et al Super-Jupiter around M dwarf

20 18 th Conference on Gravitational Microlensing Gen-II planets MOA MOA I-band (mag) HJD Yee et al OGLEMOAWise Survey data only: All data:

21 18 th Conference on Gravitational Microlensing Gen-II planets MOA MOA I-band (mag) HJD Yee et al OGLEMOAWise Survey data only: All data: Batista et al First ML planet in the habitable zone

22 18 th Conference on Gravitational Microlensing Gen-II planets MOA MOA OGLE Saturn around M dwarf modeled by C. Han

23 18 th Conference on Gravitational Microlensing Gen-II planets MOA MOA OGLE OGLE Poleski et al. 2013, Tsapras et al Super-Jupiter around M dwarf

24 18 th Conference on Gravitational Microlensing Gen-II planets MOA MOA OGLE OGLE Poleski et al. 2013, Tsapras et al Super-Jupiter around M dwarf Super-Jupiters around low-mass stars are common?

25 18 th Conference on Gravitational Microlensing Future Work

26 18 th Conference on Gravitational Microlensing Galactic model from higher order statistics Events 216Sample 30%Parallax <1%Finite source

27 18 th Conference on Gravitational Microlensing C28 telescope A new telescope at Wise observatory: 0.71m telescope Fully robotic FOV: 1 degree 2 Together with 1m telescope, higher cadence / more fields

28 18 th Conference on Gravitational Microlensing Conclusions 2 nd generation microlening survey: Preliminary results suggest a lower limit of 17% planetary systems frequency Super-Jupiters around low-mass stars are common (?) Multiplicity fraction and binary mass ratio distributions

29 18 th Conference on Gravitational Microlensing Comparison to simulation – I mag at peak Shvartzvald & Maoz 2012 Simulation sample

30 18 th Conference on Gravitational Microlensing Comparison to simulation – Anomaly duration Shvartzvald & Maoz 2012 Simulation sample


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