hundreds of planet candidates from k2 - blue waters...intro to kepler & k2 methods & why...

Hundreds of Planet Candidates from K2

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Ethan Kruse@ethan_kruse

4 June 2018

Collaborators:Eric Agol

Rodrigo LugerDan Foreman-Mackey

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Outline

✦Intro to Kepler & K2

✦Methods & Why Blue Waters

✦Results & Future Plans

Ethan Kruse4 June 2018

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Finding Transiting Planets


✦Depths

✦Earth: 0.01%

✦Jupiter: 1%

✦Odds of transit at 1AU: 1 in 200

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Kepler Telescope


✦Launched 2009

✦1.4 m mirror

✦96 Megapixel camera

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Kepler Field of View


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Kepler Planets (2009-2011)


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Kepler Planets (2009-2013)


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2013 Disaster


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K2 Overview


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K2 Overview


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K2 Overview


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K2 Degraded Quality

Kepler star (4x5 pixels)

K2: TRAPPIST-1 (11x11 pixels)


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Outline





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EVEREST: Fix K2’s Data Quality


Luger et al. (2016)

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Finding Planets


✦Unknown parameters:

✦Depth (~10)

✦Duration (16)

✦Period + Phase (7000)

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Blue Waters Assist


✦4D grid of parameters to search

✦~1 million grid points per star

✦Searching 1 star takes ~30 minutes

✦500,000 stars to search

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Outline





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My K2 Planet Candidates


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Period Ratios


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What’s Next: TESS


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TESS Data Challenge


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Conclusions

✦EVEREST returns K2 data to Kepler’s quality

✦I’ve found lots of multi-planet & dynamically active systems in K2

✦Only half of K2 data analyzed so far: hundreds more planets to come!

✦TESS is about to change everything


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TTVs


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Ultra Short Periods

P=0.47d P=0.71d

P=0.77d P=0.57d

P=0.67dEthan Kruse4 June 2018

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Single Transits


hundreds of planet candidates from k2 - blue waters...intro to kepler & k2 methods & why...

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