1. Planets in Binary Systems Searching for High Contrast Binaries with ShaneAO Lea Hirsch 3 rd Year Graduate Student UC Berkeley Department of Astronomy lhirsch@berkeley.edu ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley

2. Project Overview ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley 25 pc Volume-Limited Stellar Sample: 0.55 < B-V < 1.1 (F8 – K5) Within +/- 1 M V of Main Sequence Distance < 25 pc Declination > -10°

3. Science Goals ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley CHARA interferometry (Raghavan 2010) V band RoboAO (Riddle+ 2014) i’ band SB2 (Kolbl+ 2014) SB1 HIRES RV Trends (But no orbital solutions or companion masses) ShaneAO K s band (arcsec)

4. ShaneAO Methodology ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley Finger E - W orientation of finger K s filter 3 x 30-second integrations per position 5 x 30-second skies per star Srinath+ 2014

5. Speckle Structure ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley July 16, 2014 HIP 64979HD 130948HD 131582HD 143761HD 144287 HD 155712 HD 182488HD 190360HD 190404 HD 198425 HIP 103256HD 208038HD 215648HIP 116611HIP 1473

6. Speckle Structure ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley Nov 4, 2014 HIP 103298 HIP 104521HD 210277HD 217813 HD 1160HD 1461 HD 3196 HD 4356HD 4915HD 6101HD 10008HD 13798HD 16160HD 16287 HD 18632HD 20619HD 20630 HD 22484HD 26965 HD 26913HD 32147 HD 35112HD 38858HD 42618HD 43587HD 50281HD 52919 HD 60491

7. LOCI Algorithm ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley PSF reconstruction from reference images all images from same night reconstruct small “optimization regions” as weighted sum of reference images HD 131582 Lafrenière+ 2007

8. LOCI Algorithm ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley PSF reconstruction from reference images all images from same night reconstruct small “optimization regions” as weighted sum of reference images HIP 116611

9. LOCI Algorithm ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley PSF reconstruction from reference images all images from same night reconstruct small “optimization regions” as weighted sum of reference images HIP 116611

10. Future Outlook Improve LOCI code Astrometry : using diffraction spikes to accurately determine stars’ locations Return to these systems next year to check common proper motion for any faint companions detected ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley

11. Final Questions ShaneAO Workshop  Dec 17, 2014 at UCSC Lea Hirsch  UC Berkeley Why is the appearance of the speckles different from one hour/night to the next? Can ShaneAO be optimized to minimize the speckles? Is there a better algorithm than LOCI to carry out PSF reconstruction and reveal faint companions?