# Summary of K2 Program GO13036

Title: Searching For Planets In Binary Stars

PI: Wang, Ji (California Institute of Technology)
CoIs: Riddle, Reed L; Baranec, Christoph; Law, Nicholas M; Jensen-Clem, Rebecca; Salama, Maissa; Mawet, Dimitri Paul Quentin; Huang, Xu; Duev, Dmitry

Prior to the launch of the Kepler mission, we already knew that there are hundreds of binary stars in its field of view. For these binary stars, we find a striking deficiency of small planets. We propose to observe more known binary stars to confirm the deficiency. We consider only S-type circumstellar planet system, in which a planet orbits one of the binary stars, NOT circumbinary planets (P-type).

Our sample consists of 1208 binary stars, which represents the largest sample of binary stars for planet search. This sample will allow us to study small and large planets in binary stars. The former can be uniquely probed by the K2 mission. We will reduce the measurement uncertainty by a factor of 2-3, which will place better constraints on the occurrence rate of planets in binary stars

Targeting binary stars with no prior information of planet helps to unambiguously address the planet occurrence rate in binary stars. Increasing the sample size helps not only to confirm the deficiency of planets in binary stars but also study the influence of stellar companions on planets with different sizes and orbital separations. Future NASA mission in search of habitable worlds will inevitably encounter with this question: to select binary stars or not, which account for 33% of stars in the solar neighborhood. This proposal will pave the way to solve this question.

# Targets requested by this program that have been observed (113)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
200173849, , , , GO13023_LC|GO13036_LC|GO13039_LC|GO13047_LC|GO13077_LC
200173866, , , , GO13019_LC|GO13023_LC|GO13036_LC|GO13039_LC|GO13047_LC|GO13077_LC
200173873, , , , GO13019_LC|GO13036_LC|GO13047_LC
210513593, 67.535824, 15.637839, 5.673, GO13047_LC|GO13023_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13019_LC
210546296, 67.249047, 16.159097, 6.491, GO13071_LC|GO13122_LC|GO13002_LC|GO13023_LC|GO13065_LC|GO13024_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13019_LC
210554781, 67.211742, 16.289022, 10.161, GO13008_LC|GO13049_LC|GO13064_LC|GO13002_LC|GO13023_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13090_LC|GO13023_SC
210664191, 67.376461, 17.863163, 6.85, GO13012_LC|GO13122_LC|GO13002_LC|GO13023_LC|GO13006_LC|GO13024_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13019_LC|GO13903_LC|GO13012_SC
210674635, 67.850239, 18.00598, 16.711, GO13117_LC|GO13009_LC|GO13016_LC|GO13002_LC|GO13036_LC|GO13086_LC|GO13082_LC
210750573, 66.752588, 19.117648, 7.806, GO13014_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13039_LC|GO13019_LC|GO13902_LC|GO13904_LC
210755553, 66.647622, 19.194291, 14.859, GO13014_LC|GO13049_LC|GO13002_LC|GO13006_LC|GO13036_LC|GO13015_LC|GO13902_LC|GO13904_LC
210788457, 66.375467, 19.692752, 9.192, GO13049_LC|GO13002_LC|GO13036_LC|GO13019_LC|GO13902_LC|GO13903_LC|GO13904_LC
210816177, 65.511607, 20.114895, 15.144, GO13002_LC|GO13036_LC
210840577, 66.743465, 20.487762, 13.531, GO13049_LC|GO13122_LC|GO13002_LC|GO13006_LC|GO13036_LC
210840804, 65.383316, 20.491227, 12.909, GO13010_LC|GO13123_LC|GO13018_LC|GO13002_LC|GO13036_LC
210841299, 66.738869, 20.498878, 17.106, GO13002_LC|GO13036_LC
210862863, 65.594708, 20.821418, 5.541, GO13036_LC
210864136, 65.23503, 20.840567, 13.215, GO13049_LC|GO13123_LC|GO13002_LC|GO13006_LC|GO13036_LC|GO13050_LC
210915987, 65.316143, 21.640549, 14.601, GO13014_LC|GO13049_LC|GO13018_LC|GO13002_LC|GO13006_LC|GO13036_LC|GO13050_LC
246616036, 72.116621, 13.431439, 11.315, GO13071_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13036_LC
246631226, 72.958282, 13.655152, 6.212, GO13012_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13023_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13019_LC|GO13012_SC
246665718, 72.270281, 14.131203, 14.218, GO13049_LC|GO13123_LC|GO13002_LC|GO13036_LC
246693901, 74.828912, 14.495005, 13.864, GO13049_LC|GO13123_LC|GO13002_LC|GO13036_LC
246694710, 75.241426, 14.504792, 9.401, GO13071_LC|GO13036_LC|GO13052_LC|GO13019_LC
246694716, 75.2411, 14.504847, 8.849, GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13052_LC|GO13019_LC
246697679, 74.747545, 14.543242, 6.162, GO13122_LC|GO13002_LC|GO13036_LC|GO13019_LC|GO13127_LC
246698204, 74.738361, 14.549577, 7.525, GO13122_LC|GO13002_LC|GO13036_LC|GO13052_LC|GO13019_LC|GO13127_LC
246702681, 71.91391, 14.60651, 10.074, GO13071_LC|GO13002_LC|GO13098_LC|GO13065_LC|GO13036_LC
246707369, 72.0036, 14.666136, 15.068, GO13002_LC|GO13006_LC|GO13036_LC
246707896, 67.708997, 14.672901, 15.723, GO13049_LC|GO13018_LC|GO13002_LC|GO13036_LC
246713327, 75.574031, 14.738759, 15.302, GO13002_LC|GO13036_LC
246720153, 75.879168, 14.822593, 13.869, GO13002_LC|GO13036_LC
246720644, 74.952427, 14.828899, 11.688, GO13014_LC|GO13049_LC|GO13071_LC|GO13122_LC|GO13036_LC
246721853, 73.804872, 14.842813, 9.411, GO13002_LC|GO13036_LC|GO13052_LC
246777832, 67.968616, 15.499481, 10.513, GO13008_LC|GO13049_LC|GO13064_LC|GO13123_LC|GO13002_LC|GO13023_LC|GO13077_LC|GO13036_LC|GO13039_LC|GO13090_LC|GO13903_LC|GO13023_SC
246784301, 69.743464, 15.570893, 9.355, GO13036_LC|GO13052_LC
246789223, 77.904319, 15.62405, 9.759, GO13071_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13036_LC
246803575, 67.729394, 15.779792, 9.895, GO13071_LC|GO13122_LC|GO13002_LC|GO13065_LC|GO13024_LC|GO13036_LC|GO13903_LC
246819907, 73.866698, 15.951787, 14.209, GO13049_LC|GO13018_LC|GO13002_LC|GO13036_LC
246821607, 70.861132, 15.969106, 13.424, GO13122_LC|GO13002_LC|GO13036_LC
246831887, 71.246068, 16.076944, 11.75, GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
246847425, 78.075658, 16.234988, 9.21, GO13002_LC|GO13036_LC
246860899, 76.947512, 16.370118, 13.163, GO13123_LC|GO13002_LC|GO13036_LC
246872693, 77.285043, 16.487422, 9.982, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
246872726, 77.285009, 16.487701, 9.982, GO13049_LC|GO13071_LC|GO13036_LC
246876353, 69.973919, 16.52191, 8.788, GO13071_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13036_LC|GO13052_LC
246876593, 76.908921, 16.524249, 14.9, GO13002_LC|GO13036_LC
246881655, 74.906516, 16.574334, 12.91, GO13002_LC|GO13036_LC
246883940, 78.102706, 16.596911, 11.735, GO13053_LC|GO13123_LC|GO13002_LC|GO13036_LC|GO13090_LC
246889264, 75.384398, 16.649085, 12.667, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
246898790, 77.970897, 16.741909, 8.859, GO13071_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13036_LC|GO13903_LC
246937471, 78.62514, 17.117413, 14.586, GO13002_LC|GO13036_LC
246943627, 73.879002, 17.17531, 12.108, GO13049_LC|GO13123_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
246952727, 78.048788, 17.262694, 9.032, GO13122_LC|GO13002_LC|GO13036_LC|GO13052_LC|GO13019_LC
246952744, 78.04894, 17.262871, 10.06, GO13036_LC|GO13052_LC|GO13019_LC
246953185, 74.252982, 17.267131, 13.775, GO13049_LC|GO13123_LC|GO13002_LC|GO13036_LC
246954029, 68.082215, 17.274934, 10.259, GO13071_LC|GO13122_LC|GO13002_LC|GO13006_LC|GO13065_LC|GO13024_LC|GO13036_LC|GO13903_LC
247007055, 74.156874, 17.789474, 12.243, GO13049_LC|GO13123_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13006_LC|GO13036_LC
247024696, 71.24222, 17.954561, 15.691, GO13002_LC|GO13036_LC
247059934, 71.464037, 18.289042, 13.779, GO13049_LC|GO13018_LC|GO13002_LC|GO13036_LC
247067905, 69.593077, 18.363615, 14.62, GO13018_LC|GO13002_LC|GO13036_LC
247073855, 74.212158, 18.419295, 10.196, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
247082590, 73.68724, 18.501347, 14.706, GO13014_LC|GO13018_LC|GO13002_LC|GO13006_LC|GO13036_LC
247094438, 73.008536, 18.616671, 17.14, GO13002_LC|GO13036_LC
247136638, 71.297022, 19.019626, 10.103, GO13002_LC|GO13077_LC|GO13036_LC|GO13052_LC
247136661, 71.297162, 19.019829, 10.103, GO13071_LC|GO13122_LC|GO13101_LC|GO13077_LC|GO13036_LC|GO13052_LC
247153504, 71.483123, 19.180984, 8.975, GO13122_LC|GO13002_LC|GO13101_LC|GO13077_LC|GO13036_LC|GO13052_LC
247159741, 71.405479, 19.240357, 10.701, GO13071_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13077_LC|GO13036_LC|GO13052_LC
247165313, 71.170864, 19.292348, 10.065, GO13122_LC|GO13002_LC|GO13077_LC|GO13036_LC|GO13052_LC
247175086, 71.070792, 19.386512, 15.68, GO13002_LC|GO13036_LC
247211082, 78.932447, 19.729909, 8.758, GO13049_LC|GO13071_LC|GO13002_LC|GO13036_LC|GO13052_LC
247211099, 78.932903, 19.730031, 8.758, GO13071_LC|GO13122_LC|GO13036_LC
247214390, 69.144621, 19.760033, 7.376, GO13122_LC|GO13002_LC|GO13028_LC|GO13036_LC|GO13052_LC|GO13019_LC
247225984, 71.111882, 19.871366, 11.845, GO13117_LC|GO13049_LC|GO13016_LC|GO13002_LC|GO13036_LC|GO13082_LC|GO13118_LC
247253928, 79.379805, 20.131841, 6.699, GO13014_LC|GO13097_LC|GO13122_LC|GO13002_LC|GO13024_LC|GO13036_LC|GO13039_LC|GO13019_LC|GO13903_LC|GO13097_SC
247254216, 79.811208, 20.134592, 5.927, GO13047_LC|GO13036_LC|GO13019_LC
247256233, 80.550692, 20.153317, 12.459, GO13123_LC|GO13002_LC|GO13036_LC
247308600, 70.721244, 20.626987, 11.096, GO13049_LC|GO13071_LC|GO13036_LC
247308630, 70.720929, 20.627239, 11.096, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
247318998, 69.278826, 20.71906, 13.737, GO13049_LC|GO13018_LC|GO13002_LC|GO13036_LC
247321564, 69.906541, 20.741623, 10.144, GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13019_LC
247321595, 69.906878, 20.741917, 11.338, GO13036_LC|GO13019_LC
247331715, 75.434266, 20.829846, 8.463, GO13012_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13039_LC|GO13012_SC
247561189, 76.411401, 22.665079, 10.585, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13050_LC
247563213, 70.649783, 22.680466, 18.561, GO13002_LC|GO13036_LC
247563398, 69.584333, 22.681927, 15.719, GO13002_LC|GO13006_LC|GO13036_LC
247574639, 69.202722, 22.769893, 13.077, GO13049_LC|GO13123_LC|GO13018_LC|GO13002_LC|GO13006_LC|GO13036_LC|GO13050_LC
247581080, 71.28018, 22.81893, 13.8, GO13049_LC|GO13123_LC|GO13018_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13050_LC
247594986, 68.292169, 22.925877, 13.431, GO13002_LC|GO13006_LC|GO13036_LC
247620643, 70.475208, 23.122324, 13.249, GO13122_LC|GO13002_LC|GO13036_LC
247646821, 71.560122, 23.317853, 12.419, GO13123_LC|GO13048_LC|GO13002_LC|GO13036_LC
247651328, 74.716993, 23.350984, 11.927, GO13002_LC|GO13036_LC
247656751, 68.978753, 23.392155, 11.736, GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
247660893, 72.181023, 23.423533, 14.559, GO13002_LC|GO13036_LC
247691701, 75.91104, 23.651929, 9.888, GO13122_LC|GO13002_LC|GO13077_LC|GO13036_LC|GO13052_LC
247698284, 75.908083, 23.700505, 12.508, GO13002_LC|GO13077_LC|GO13036_LC
247702533, 75.910641, 23.730448, 10.751, GO13122_LC|GO13002_LC|GO13038_LC|GO13077_LC|GO13036_LC|GO13052_LC|GO13090_LC
247721842, 76.255875, 23.866894, 12.947, GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
247726339, 71.388339, 23.897672, 13.871, GO13002_LC|GO13036_LC
247743703, 67.129759, 24.016814, 12.752, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC
247750349, 74.269624, 24.064631, 17.079, GO13002_LC|GO13036_LC
247759652, 75.059996, 24.130066, 10.695, GO13122_LC|GO13002_LC|GO13056_LC|GO13036_LC|GO13052_LC|GO13127_LC
247786285, 74.941603, 24.314208, 10.626, GO13049_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC|GO13052_LC
247788960, 68.127396, 24.3326, 11.682, GO13117_LC|GO13009_LC|GO13016_LC|GO13002_LC|GO13036_LC|GO13082_LC|GO13058_LC
247790818, 71.343473, 24.345009, 11.966, GO13049_LC|GO13123_LC|GO13071_LC|GO13002_LC|GO13036_LC|GO13019_LC
247792225, 68.39192, 24.354748, 11.041, GO13117_LC|GO13009_LC|GO13016_LC|GO13002_LC|GO13036_LC|GO13082_LC|GO13058_LC|GO13119_LC
247804007, 72.613738, 24.435904, 14.154, GO13002_LC|GO13036_LC
247804208, 72.101029, 24.437323, 13.054, GO13002_LC|GO13036_LC
247804779, 71.889915, 24.441399, 12.617, GO13002_LC|GO13036_LC
247843447, 71.819423, 24.705993, 13.203, GO13002_LC|GO13036_LC
247923107, 67.512816, 25.255521, 10.32, GO13002_LC|GO13036_LC
248001580, 71.675039, 25.818273, 14.552, GO13049_LC|GO13018_LC|GO13002_LC|GO13036_LC
248048849, 74.423254, 26.174668, 13.538, GO13049_LC|GO13018_LC|GO13002_LC|GO13006_LC|GO13036_LC
248093296, 70.629087, 26.527091, 12.457, GO13049_LC|GO13123_LC|GO13071_LC|GO13122_LC|GO13002_LC|GO13036_LC