2013ApJ...770..101K -
Astrophys. J., 770, 101 (2013/June-3)
The hunt for exomoons with Kepler (HEK). II. Analysis of seven viable satellite-hosting planet candidates.
KIPPING D.M., HARTMAN J., BUCHHAVE L.A., SCHMITT A.R., BAKOS G.A. and NESVORNY D.
Abstract (from CDS):
From the list of 2321 transiting planet candidates announced by the Kepler Mission, we select seven targets with favorable properties for the capacity to dynamically maintain an exomoon and present a detectable signal. These seven candidates were identified through our automatic target selection (TSA) algorithm and target selection prioritization (TSP) filtering, whereby we excluded systems exhibiting significant time-correlated noise and focused on those with a single transiting planet candidate of radius less than 6 R⊕. We find no compelling evidence for an exomoon around any of the seven Kepler Objects of Interest (KOIs) but constrain the satellite-to-planet mass ratios for each. For four of the seven KOIs, we estimate a 95% upper quantile of MS/MP< 0.04, which given the radii of the candidates, likely probes down to sub-Earth masses. We also derive precise transit times and durations for each candidate and find no evidence for dynamical variations in any of the KOIs. With just a few systems analyzed thus far in the ongoing "Hunt for Exomoons with Kepler" (HEK) project, projections on η{moon} would be premature, but a high frequency of large moons around Super-Earths/Mini-Neptunes would appear to be incommensurable with our results so far.
Abstract Copyright:
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Journal keyword(s):
planetary systems - stars: individual (KOI-174, KOI-303, KOI-365, KOI-722, KOI-1472, KOI-1857, KOI-1876) - techniques: photometric
Simbad objects:
8
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