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An Increase in Planet Formation Efficiency
around Low-Mass Stars
Gijs Mulders, Ilaria Pascucci, Daniel Apai
University of Arizona
EOS (PI: Daniel Apai)
a NASA NexSS program
Mulders et al. 2015b. Disk mass: Andrews et al. 2013
Planet Formation Efficiency
Low-Mass Stars have more planets?
Howard et al. 2012
Johnson et al. 2007
K2: talk by Ian
Crossfield
Huber et al. 2014, Dressing & Charbonneau 2013
Stellar Mass vs. Effective Temperature
Planet Candidates: Q1-Q16
KOIs from Mullally et al. 2014
3. Detection efficiency
Detection
efficiency
(S/N)
(Christiansen et al. 2015)
Transit
Probability
Planet Occurrence
Planet
Period
Distribution
Mulders et al. 2015a,b
Planet
Radius
Distribution
Mulders et al. 2015a
Planet Period Distribution (Q1-Q8)
See Mulders et al. 2015a for details
Mulders et al. 2015b
Planet Radius Distribution (Q1-Q16)
Mulders et al. 2015b
Planet Radius Distribution (Q1-Q16)
Planet Radius Distribution (Q1-Q16)
2x
Mulders et al. 2015b
4x
Estimating Planet Heavy Element Mass
Weiss & Marcy 2014
Heavy element mass from
Miller & Fortney 2011
Mulders et al. 2015b
Heavy Elements Mass in Planets P<50 days
Mulders et al. 2015b. Disk mass: Andrews et al. 2013
Heavy Elements <150 days
More Efficient Migration of Disk Material?
?
The Planet Population around Low-Mass
Stars from Kepler Prime
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