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

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Presentation on theme: "The MOA Project 2013 Observing Season David Bennett University of Notre Dame."— Presentation transcript:

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 : 8k x 10k 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.(>M Jup ) 1obs./95min.(M jup ) 1obs./47min. (M nep ) 1obs./15min. (M ) 668 microlensing events (2013) 668 microlensing events (2013) https://it massey.ac.nz/moa/ G.C. Real time photometry and alerts

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 -4 t * 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 -4 s = 2.3 likely parallax signal

10 OGLE-2013-BLG-0132/MOA st 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 -4 s = 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 -3 s = 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 -3 s = 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 -3 s = 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 -3 s = 0.88 or q = 6×10 -3 s = 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 Likely planetary events in red (not all events checked) 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 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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