# Summary of K2 Program GO5041

Title: Eclipses, transits and variability of white dwarf stars with the K2 Mission

PI: Burleigh, Matt R. (University of Leicester)
CoIs: Braker, Ian Peter; Goad, Michael R; Holberg, Jay B; Barstow, Martin Adrian; Casewell, Sarah L

This proposal is to obtain high precision photometry of White Dwarfs within the two proposed fields of K2 Cycle 1 to search for planets, brown dwarfs and stellar variability.

Such a survey (combined with the other K2 fields) would allow for the monitoring of statistically significant numbers of White Dwarfs to be able to put constraints on the existence planets in short period orbits around White Dwarfs. Any transiting objects that are detected could be prime targets for follow up observations by the JWST (Loeb & Maoz 2013). Such a survey would also be able to detect brown dwarfs around White Dwarfs allowing further constraints on the smallest object that can survive common envelope evolution. In addition any unexpected variability would also be detected such as the Kepler mission found in BOKS 53856 (Holberg and Howell 2011).

# Targets requested by this program that have been observed (112)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
211305065, 131.894796, 9.951837, 18.997, GO5001_LC|GO5041_LC
211307909, 130.477754, 10.010719, 18.413, GO5001_LC|GO5017_LC|GO5041_LC
211321596, 133.515902, 10.28478, 19.099, GO5001_LC|GO5041_LC
211331839, 132.266856, 10.480368, 18.782, GO5001_LC|GO5041_LC
211351691, 131.10212, 10.845547, 18.632, GO5001_LC|GO5041_LC
211383343, 127.847944, 11.377755, 18.951, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211401138, 132.280276, 11.657119, 17.084, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC|GO5073_LC
211493869, 130.546078, 13.051918, 18.525, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211515262, 126.711338, 13.354216, 18.99, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211517043, 127.886453, 13.378867, 16.005, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211519519, 130.081385, 13.413783, 18.862, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211520086, 137.151562, 13.421919, 18.91, GO5001_LC|GO5041_LC
211540647, 135.851958, 13.710961, 18.975, GO5001_LC|GO5041_LC
211547876, 126.268908, 13.813444, 19.07, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211553385, 135.549019, 13.888149, 18.65, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211562244, 135.880409, 14.013676, 16.421, GO5001_LC|GO5041_LC
211565467, 123.173045, 14.060157, 18.127, GO5017_SC|GO5001_LC|GO5017_LC|GO5041_LC
211585136, 124.967629, 14.337039, 19.065, GO5001_LC|GO5041_LC
211596649, 128.016598, 14.495103, 19.049, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211597731, 125.098036, 14.509428, 18.198, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211606711, 136.132575, 14.629857, 18.406, GO5001_LC|GO5017_LC|GO5041_LC
211608635, 124.290457, 14.65639, 19.075, GO5001_LC|GO5041_LC
211624615, 129.117064, 14.880194, 18.208, GO5001_LC|GO5017_LC|GO5041_LC
211628322, 126.617097, 14.93284, 18.901, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211629697, 130.225591, 14.952495, 18.391, GO5043_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
211685279, 132.750961, 15.717118, 18.87, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211692110, 127.958037, 15.809851, 18.826, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211713741, 129.042045, 16.099658, 17.885, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211718120, 127.553187, 16.159409, 19.08, GO5073_SC|GO5001_LC|GO5041_LC|GO5043_LC|GO5073_LC
211719918, 134.078957, 16.18438, 15.733, GO5017_SC|GO5043_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
211725539, 126.349758, 16.260999, 19.024, GO5001_LC|GO5041_LC
211745108, 130.282051, 16.539361, 17.373, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211746217, 123.819834, 16.5548, 18.344, GO5041_LC
211752996, 129.099401, 16.649881, 18.672, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211754321, 129.296321, 16.668723, 18.988, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211755392, 133.849449, 16.683052, 18.757, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC|GO5073_LC
211756535, 127.853599, 16.699598, 17.209, GO5001_LC|GO5017_LC|GO5041_LC
211768391, 124.405552, 16.866512, 18.509, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211788137, 124.364099, 17.146694, 18.591, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211808335, 132.69796, 17.433889, 14.773, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211821115, 123.157546, 17.617061, 13.491, GO5003_LC|GO5017_LC|GO5041_LC
211821845, 128.172493, 17.627093, 19.044, GO5001_LC|GO5041_LC
211886776, 127.107817, 18.533308, 19.039, GO5001_LC|GO5041_LC
211888372, 133.832991, 18.556675, 19.075, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211888384, 126.765934, 18.556778, 18.305, GO5017_SC|GO5043_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
211902739, 133.930089, 18.767042, 17.557, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211909921, 130.441913, 18.874441, 18.91, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211912286, 130.741773, 18.909814, 18.383, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211916160, 134.20139, 18.968032, 18.981, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211918500, 130.415559, 19.002148, 17.952, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211919452, 132.190664, 19.017057, 18.872, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211923593, 133.877748, 19.077087, 16.36, GO5073_SC|GO5017_LC|GO5041_LC|GO5073_LC
211926430, 135.171165, 19.120668, 17.726, GO5017_SC|GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211932844, 137.473875, 19.218448, 17.942, GO5001_LC|GO5017_LC|GO5041_LC
211934410, 125.203412, 19.241427, 19.008, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
211936871, 132.607689, 19.277636, 18.523, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
211984488, 129.939814, 20.00437, 18.037, GO5043_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
211993227, 124.31831, 20.14302, 18.194, GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
211995452, 135.528175, 20.180163, 15.753, GO5041_LC
211995476, 135.535024, 20.180546, 17.735, GO5001_LC|GO5041_LC|GO5038_LC
211997512, 135.827394, 20.213045, 16.952, GO5073_SC|GO5017_LC|GO5041_LC|GO5073_LC|GO5001_LC
212015915, 127.005028, 20.519144, 18.555, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212020650, 136.592078, 20.597541, 18.383, GO5001_LC|GO5017_LC|GO5041_LC
212028254, 130.841581, 20.725039, 18.367, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212067156, 131.071817, 21.404013, 18.676, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212071753, 128.307232, 21.488114, 18.942, GO5073_SC|GO5001_LC|GO5041_LC|GO5073_LC
212072907, 125.915656, 21.509407, 18.964, GO5001_LC|GO5041_LC
212072946, 133.010177, 21.510131, 18.483, GO5017_SC|GO5043_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5043_LC
212080404, 132.652203, 21.648463, 18.652, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212080588, 133.320798, 21.651623, 18.311, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212082050, 130.131041, 21.678522, 18.065, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212112843, 133.472938, 22.274722, 16.788, GO5001_LC|GO5017_LC|GO5041_LC
212112933, 129.104234, 22.276688, 17.999, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212140886, 128.076363, 22.838991, 18.597, GO5001_LC|GO5017_LC|GO5041_LC
212146500, 131.413232, 22.957833, 16.128, GO5073_SC|GO5001_LC|GO5017_LC|GO5041_LC|GO5073_LC
212146679, 132.401668, 22.961715, 18.981, GO5001_LC|GO5041_LC
212148813, 130.720983, 23.00707, 14.55, GO5073_SC|GO5001_LC|GO5003_LC|GO5017_LC|GO5041_LC|GO5073_LC
212173115, 134.219366, 23.561608, 18.68, GO5001_LC|GO5017_LC|GO5041_LC
212173448, 129.892956, 23.569284, 16.726, GO5001_LC|GO5003_LC|GO5041_LC
228682309, 123.0080185, 17.6029701, 17.73, GO5041_LC|GO5017_LC|GO5001_LC
228682312, 123.7404938, 13.0101805, 18.15, GO5041_LC|GO5017_LC|GO5001_LC
228682316, 124.2340469, 20.8294601, 17.0, GO5041_LC|GO5001_LC
228682319, 124.9099808, 14.4326696, 18.76, GO5041_LC|GO5001_LC
228682325, 126.2161407, 22.8924007, 19.07, GO5041_LC|GO5001_LC
228682326, 126.2995987, 11.87679, 18.78, GO5043_LC|GO5041_LC|GO5001_LC
228682328, 126.3419724, 17.4310398, 19.04, GO5041_LC|GO5001_LC
228682333, 126.6441422, 13.4108896, 17.75, GO5041_LC|GO5001_LC
228682335, 126.7861328, 17.5223904, 17.81, GO5043_SC|GO5043_LC|GO5041_LC|GO5001_LC
228682341, 127.1694489, 21.5208492, 18.11, GO5041_LC|GO5017_LC|GO5001_LC
228682349, 128.2706604, 10.7147102, 18.61, GO5041_LC|GO5001_LC
228682351, 128.8270264, 10.71632, 17.19, GO5041_LC|GO5001_LC
228682354, 129.0417175, 19.6385098, 17.78, GO5041_LC|GO5001_LC
228682359, 129.2094727, 15.8906803, 16.74, GO5073_SC|GO5041_LC|GO5017_LC|GO5001_LC|GO5073_LC
228682372, 129.9997253, 14.4827805, 18.61, GO5041_LC|GO5001_LC
228682373, 130.0553741, 18.7239799, 18.02, GO5041_LC|GO5017_LC|GO5001_LC
228682376, 130.308075, 20.5052109, 18.66, GO5041_LC|GO5001_LC
228682377, 130.4629364, 22.8878307, 17.71, GO5041_LC|GO5017_LC|GO5001_LC
228682380, 130.6390381, 10.3017597, 19.06, GO5041_LC|GO5017_LC|GO5001_LC
228682382, 130.7178955, 19.8530903, 17.7, GO5041_LC|GO5017_LC|GO5001_LC
228682383, 130.7643127, 16.1220493, 18.43, GO5041_LC|GO5001_LC
228682387, 131.1430359, 14.9304504, 18.82, GO5041_LC|GO5001_LC
228682389, 131.1515198, 21.6414394, 18.13, GO5041_LC|GO5017_LC|GO5001_LC
228682393, 131.195816, 16.2344398, 18.11, GO5043_LC|GO5041_LC|GO5017_LC|GO5001_LC
228682397, 131.9550629, 18.5046806, 17.1, GO5043_SC|GO5043_LC|GO5041_LC|GO5001_LC
228682406, 132.4712219, 10.93923, 17.94, GO5041_LC|GO5001_LC
228682415, 133.2292328, 18.8370705, 17.88, GO5041_LC|GO5017_LC|GO5001_LC
228682416, 133.3305054, 18.8956909, 17.31, GO5041_LC|GO5017_LC|GO5001_LC
228682419, 133.5581207, 18.8899002, 17.73, GO5043_LC|GO5041_LC|GO5017_LC|GO5001_LC
228682422, 135.6152344, 12.86833, 17.06, GO5041_LC|GO5001_LC
228682423, 135.9700165, 19.6121006, 16.37, GO5041_LC|GO5017_LC|GO5001_LC
228682427, 136.5452271, 14.6569595, 18.58, GO5041_LC|GO5001_LC
228682429, 137.0964355, 12.7844296, 17.33, GO5041_LC|GO5001_LC