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The MOA Project 2013 Observing Season

The MOA Project 2013 Observing Season. David Bennett University of Notre Dame. MOA-II 1.8m telescope （ New Zealand/Mt. John Observatory at NZ, 44  S ）. Mirror : 1.8m CCD : 8k x 10k pix. FOV : 2.2 deg. 2 - Allows high cadence monitoring. MOA Observing Strategy.

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The MOA Project 2013 Observing Season

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  1. The MOA Project 2013 Observing Season David Bennett University of Notre Dame

  2. MOA-II 1.8m telescope（New Zealand/Mt. John Observatory at NZ, 44S） Mirror : 1.8m CCD : 8kx10k pix. FOV : 2.2 deg.2 - Allows high cadence monitoring

  3. MOA Observing Strategy • 50 deg.2(20Mstars) • 2.2 deg.2 per field • 1obs./night.(>MJup) • 1obs./95min.(Mjup) • 1obs./47min. (Mnep) • 1obs./15min. (M) G.C. Real time photometry and alerts 668 microlensing events (2013) https://it019909.massey.ac.nz/moa/

  4. MOA-2009-BLG-266 parallax uncertainty is asymmetric

  5. Summary of Planetary Results • 10 events with planetary signals in MOA data • MOA-2013-BLG-040/OGLE-2013-BLG-0077* • MOA-2013-BLG-093* • MOA-2013-BLG-220 • MOA-2013-BLG-605/OGLE-2013-BLG-1835 • OGLE-2013-BLG-0132/MOA-2013-BLG-148* • OGLE-2013-BLG-0341/MOA-2013-BLG-26 • OGLE-2013-BLG-1125/MOA-2013-BLG-584 • OGLE-2013-BLG-1271/MOA-2013-BLG-579* • OGLE-2013-BLG-1721/MOA-2013-BLG-618 • OGLE-2013-BLG-1761/MOA-2013-BLG-651 • Many anomalies not detected in real time (*) • Plan to fix this in 2014

  6. MOA-2013-BLG-040/OGLE-0077 MOA+OGLE survey discovery - Not alerted in real time q = 3×10-4t* poorly constrained

  7. MOA-2013-BLG-093 MOA+OGLE survey discovery - No real-time alert q = 3×10-3

  8. MOA-2013-BLG-220 High mag event, alerted by MOA, covered by uFUN, Robonet, MOA and OGLE q = 3×10-3

  9. MOA-2013-BLG-605/OGLE-1835 Planetary anomaly alerted as single lens event in real time – understood as planetary event when it began brightening again. q = 3×10-4s = 2.3 likely parallax signal

  10. OGLE-2013-BLG-0132/MOA-148 1st planetary peak missed by MOA real-time analysis. Identified by Han with OGLE data from the next night, but not follow-up data obtained q = 5×10-4s = 1.14 likely parallax signal

  11. OGLE-2013-BLG-0341/MOA-260 Identified by Gould & Han as likely planetary event before high-mag – binary star system with planet. Gould et al. paper in preparation planet has low mass 2-3 Earth-masses.

  12. OGLE-2013-BLG-1125/MOA-584 Alerted in real time by MOA, but toward the end of the planetary anomaly. But, peak observed by Robonet, μFUN. q = 2×10-3s = 1.05 strong parallax

  13. OGLE-2013-BLG-1271/MOA-579 MOA+OGLE survey discovery. Not identified in real time Strong cusp crossing in MOA data q = 4×10-3s = 1.45

  14. OGLE-2013-BLG-1721/MOA-618 Planetary signal in OGLE data identified by Han “Manual alert” used to produce MOA light curve q = 1.3 ×10-3s = 0.96

  15. OGLE-2013-BLG-1761/MOA-651 Anomaly identified in real time by MOA, but no follow-up data. (Late in season – Sep. 10) q = 3×10-3s = 0.88 or q = 6×10-3s = 0.96

  16. High Magnification Alerts • 26 high mag alerts based in part on MOA data • MOA-2013-BLG-063 • MOA-2013-BLG-126 • MOA-2013-BLG-145/146 • MOA-2013-BLG-220 • MOA-2013-BLG-246 • OGLE-2013-BLG-0341/MOA-2013-BLG-260 • MOA-2013-BLG-067 • MOA-2013-BLG-299/OGLE-2013-BLG-0640 • OGLE-2013-BLG-0674/MOA-2013-BLG-346 • OGLE-2013-BLG-0488/MOA-2013-BLG-355 • OGLE-2013-BLG-0446/MOA-2013-BLG-306 • OGLE-2013-BLG-0860/MOA-2013-BLG-411 • OGLE-2013-BLG-0798/MOA-2013-BLG-432 • MOA-2013-BLG-456 • MOA-2013-BLG-460 • OGLE-2013-BLG-1066/MOA-2013-BLG-471 • OGLE-2013-BLG-1114/MOA-2013-BLG-485 • MOA-2013-BLG-498 • OGLE-2013-BLG-1177/MOA-2013-BLG-505 • MOA-2013-BLG-524 • MOA-2013-BLG-557 • OGLE-2013-BLG-1259/MOA-2013-BLG-528 • OGLE-2013-BLG-0911/MOA-2013-BLG-551 • MOA-2013-BLG-611 • MOA-2013-BLG-650 • OGLE-2013-BLG-1868/MOA-2013-BLG-655 Likelyplanetaryevents in red (notalleventschecked) MOA real-time photometry means that most high mag alerts have most recent data from MOA 7 other high mag alerts with OGLE data only (according to my possibly incomplete email review)

  17. High Mag Alerts MOA-2013-BLG-063 MOA-2013-BLG-220 planet!

  18. High Mag Alerts OGLE-2013-BLG-0341 (planet) MOA-2013-BLG-299/OGLE-0640

  19. High Mag Alerts OGLE-2013-BLG-0674/MOA-346 OGLE-2013-BLG-0446/MOA-306 planet

  20. High Mag Alerts OGLE-2013-BLG-0860/MOA-411

  21. High Mag Alerts OGLE-2013-BLG-0798/MOA-432 MOA-2013-BLG-460

  22. High Mag Alerts OGLE-2013-BLG-1066/MOA-471 OGLE-2013-BLG-1114/MOA-485

  23. High Mag Alerts MOA-2013-BLG-498 MOA-2013-BLG-557

  24. High Mag Alerts OGLE-2013-BLG-1259/MOA-528 OGLE-2013-BLG-0911/MOA-511 possible planet

  25. High Mag Alerts MOA-2013-BLG-611 OGLE-2013-BLG-1868/MOA-655

  26. Improvements Planned for 2014 • Problems: • missed planetary anomaly alerts • likely missed short, “rogue planet” events • Develop remote anomaly alert capability • Reduce false alarms in real-time event alert system • many false alarms are due to image artifacts that can be removed • Closer cooperation with LCOGT? – particularly SAAO site which can immediately follow possible anomalies seen by MOA • Arrange for planetary signals and good weather in the middle of the season when it is easier to collect data

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