# Summary of K2 Program GO14018

Title: Clouds and Flares in Ultracool Dwarfs

PI: Gizis, John E. (University of Delaware)
CoIs: Burgasser, Adam J; Paudel, Rishi R; Williams, Peter K G; Schmidt, Sarah Jane

We propose to observe spectroscopically confirmed nearby ultracool dwarfs using the Kepler K2 mission to characterize their cloud/weather properties, measure their flare rates, and detect their planetary companions. Like gas giant planets, very-low-mass stars and brown dwarfs form condensate clouds in their atmospheres. For the nearest ultracool dwarfs, K2 can uniquely characterize variability due to these clouds, both rotation modulation on a timescale of hours and weather evolution of the clouds on timescales from days to months. Magnetic activity changes dramatically at the stellar/substellar hydrogen-burning limits. We have already demonstrated that ultracool dwarfs can generate white light flares and superflares in our previous Kepler and K2 campaigns, but increasing the sample size is important to constraint the rate of these rare events as a function of effective temperature and age. Flares are tied to magnetic reconnection rates and the energy budget. We also aim to detect transiting exoplanets by continuing to monitor each available ultracool dwarf in K2 campaigns; brown dwarfs, gas giants, and even large rocky planets are detectable. The K2 targets include nearby field late-M and L dwarfs, and even faint targets are valuable, since transits may be total and flares can be 20-40 times the photosphere in the Kepler filter. Campaign 15 includes the key target 2MASSW J1507476-162738, a bright L5 dwarf at 7.2 pc.

# Targets requested by this program that have been observed (95)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
201453319, 163.195914, -0.171523, 18.078, GO14067_LC|GO14012_LC|GO14018_LC
201528766, 162.55199, 0.967564, 18.125, GO14067_LC|GO14012_LC|GO14018_LC
201573260, 163.942365, 1.634359, 18.651, GO14067_LC|GO14012_LC|GO14018_LC
201575762, 162.600189, 1.672161, 18.221, GO14067_LC|GO14012_LC|GO14018_LC
201580841, 162.586993, 1.747867, 17.823, GO14067_LC|GO14012_LC|GO14018_LC
201581268, 163.618597, 1.75426, 18.112, GO14067_LC|GO14012_LC|GO14018_LC
201693239, 165.436335, 3.525877, 16.553, GO14067_LC|GO14012_LC|GO14018_LC
201705352, 165.354484, 3.729282, 17.714, GO14067_LC|GO14012_LC|GO14018_LC
201744267, 165.007101, 4.384897, 17.488, GO14067_LC|GO14012_LC|GO14018_LC|GO14005_LC
201800829, 163.542809, 5.381282, 17.168, GO14067_LC|GO14012_LC|GO14018_LC
201801587, 164.178972, 5.395744, 18.876, GO14067_LC|GO14012_LC|GO14018_LC
201885041, 164.120109, 7.01454, 11.585, GO14082_LC|GO14025_LC|GO14067_LC|GO14012_LC|GO14072_LC|GO14018_LC|GO14056_LC|GO14030_LC|GO14063_LC|GO14052_LC|GO14005_LC|GO14082_SC|GO14072_SC
248412090, 160.85454, 0.030061, 17.426, GO14067_LC|GO14012_LC|GO14018_LC
248413181, 160.713651, 0.072821, 18.26, GO14067_LC|GO14012_LC|GO14018_LC
248433880, 157.63207, 0.875099, 18.709, GO14067_LC|GO14012_LC|GO14018_LC
248440677, 155.780924, 1.131445, 17.03, GO14067_LC|GO14012_LC|GO14018_LC
248442470, 162.178379, 1.199465, 14.261, GO14067_LC|GO14012_LC|GO14018_LC|GO14018_SC
248445614, 162.254701, 1.319634, 17.621, GO14067_LC|GO14012_LC|GO14018_LC
248448687, 162.343539, 1.433166, 17.366, GO14067_LC|GO14012_LC|GO14018_LC
248450332, 156.27106, 1.485884, 17.884, GO14067_LC|GO14012_LC|GO14018_LC
248452093, 157.915056, 1.54587, 16.248, GO14067_LC|GO14012_LC|GO14018_LC
248455574, 157.679413, 1.666892, 17.915, GO14067_LC|GO14012_LC|GO14018_LC
248456554, 157.882722, 1.705209, 17.739, GO14067_LC|GO14012_LC|GO14018_LC
248459304, 157.571968, 1.804911, 17.553, GO14067_LC|GO14012_LC|GO14018_LC
248463831, 157.682468, 1.952755, 17.049, GO14067_LC|GO14012_LC|GO14018_LC
248464098, 161.031007, 1.961745, 18.132, GO14067_LC|GO14012_LC|GO14018_LC
248484484, 157.815512, 2.644152, 16.898, GO14067_LC|GO14012_LC|GO14018_LC
248498671, 159.012821, 3.10447, 17.469, GO14067_LC|GO14012_LC|GO14018_LC
248519036, 154.176972, 3.716034, 16.654, GO14067_LC|GO14012_LC|GO14018_LC
248523311, 158.523511, 3.837911, 16.091, GO14067_LC|GO14012_LC|GO14018_LC
248525204, 154.956809, 3.889558, 17.916, GO14067_LC|GO14012_LC|GO14018_LC
248525367, 154.133897, 3.894437, 17.519, GO14067_LC|GO14012_LC|GO14018_LC
248547278, 154.997383, 4.474708, 17.753, GO14067_LC|GO14012_LC|GO14018_LC
248548001, 161.039265, 4.493805, 17.368, GO14067_LC|GO14012_LC|GO14018_LC|GO14063_LC
248551923, 154.272234, 4.596045, 18.359, GO14012_LC|GO14018_LC
248559166, 154.4671, 4.792089, 17.926, GO14067_LC|GO14012_LC|GO14018_LC
248561247, 154.099069, 4.8515, 18.114, GO14067_LC|GO14012_LC|GO14018_LC
248565564, 153.78974, 4.969107, 18.433, GO14067_LC|GO14012_LC|GO14018_LC
248567554, 158.071098, 5.017558, 14.998, GO14067_LC|GO14012_LC|GO14018_LC
248570548, 160.148889, 5.091599, 18.326, GO14067_LC|GO14012_LC|GO14018_LC
248574498, 154.383663, 5.197497, 17.943, GO14067_LC|GO14012_LC|GO14018_LC
248580531, 155.26159, 5.356202, 17.752, GO14067_LC|GO14012_LC|GO14018_LC
248592301, 162.561977, 5.674407, 16.706, GO14067_LC|GO14012_LC|GO14018_LC
248597458, 159.817397, 5.80993, 18.255, GO14067_LC|GO14012_LC|GO14018_LC
248600681, 154.796688, 5.891592, 18.363, GO14067_LC|GO14012_LC|GO14018_LC
248602543, 161.186797, 5.936989, 17.763, GO14067_LC|GO14012_LC|GO14018_LC
248604083, 162.661947, 5.975922, 16.445, GO14067_LC|GO14012_LC|GO14018_LC
248604738, 162.917294, 5.992803, 17.953, GO14067_LC|GO14012_LC|GO14018_LC
248609711, 153.678252, 6.117474, 18.273, GO14067_LC|GO14012_LC|GO14018_LC
248615433, 159.535935, 6.261614, 17.598, GO14067_LC|GO14012_LC|GO14018_LC
248621243, 159.492509, 6.410976, 18.017, GO14067_LC|GO14012_LC|GO14018_LC
248622974, 155.68973, 6.453102, 17.818, GO14067_LC|GO14012_LC|GO14018_LC
248623263, 161.80501, 6.460828, 18.841, GO14067_LC|GO14012_LC|GO14018_LC
248624299, 156.940533, 6.486239, 18.173, GO14067_LC|GO14012_LC|GO14018_LC
248631849, 155.090307, 6.676745, 17.608, GO14067_LC|GO14012_LC|GO14018_LC
248638618, 161.225626, 6.846862, 18.268, GO14067_LC|GO14012_LC|GO14018_LC
248648532, 158.108219, 7.088235, 18.564, GO14067_LC|GO14012_LC|GO14018_LC
248651399, 155.102398, 7.15693, 17.349, GO14067_LC|GO14012_LC|GO14018_LC
248653486, 160.831019, 7.209056, 17.635, GO14067_LC|GO14012_LC|GO14018_LC
248655562, 163.819309, 7.258709, 15.263, GO14067_LC|GO14012_LC|GO14018_LC|GO14052_LC
248655628, 153.85461, 7.260646, 17.563, GO14067_LC|GO14012_LC|GO14018_LC
248656132, 154.014349, 7.272909, 18.199, GO14067_LC|GO14012_LC|GO14018_LC
248656573, 163.404629, 7.283172, 17.741, GO14067_LC|GO14012_LC|GO14018_LC
248656932, 162.93829, 7.292343, 18.126, GO14012_LC|GO14018_LC|GO14005_LC
248658559, 158.584494, 7.332827, 17.956, GO14067_LC|GO14012_LC|GO14018_LC
248659481, 154.524064, 7.35573, 18.753, GO14067_LC|GO14012_LC|GO14018_LC
248659647, 162.66375, 7.359687, 17.136, GO14067_LC|GO14012_LC|GO14018_LC|GO14052_LC
248659722, 163.613337, 7.361799, 17.854, GO14067_LC|GO14012_LC|GO14018_LC
248660752, 159.881606, 7.388029, 17.85, GO14067_LC|GO14012_LC|GO14018_LC
248663141, 157.984815, 7.446123, 18.055, GO14067_LC|GO14012_LC|GO14018_LC
248666674, 158.500187, 7.535396, 17.705, GO14067_LC|GO14012_LC|GO14018_LC
248671305, 160.04851, 7.650188, 18.01, GO14067_LC|GO14012_LC|GO14018_LC
248676218, 161.466861, 7.772091, 18.2, GO14067_LC|GO14012_LC|GO14018_LC
248680268, 153.823463, 7.870028, 16.969, GO14012_LC|GO14018_LC
248682489, 158.934565, 7.923514, 16.24, GO14067_LC|GO14012_LC|GO14018_LC
248691809, 163.947233, 8.145218, 13.916, GO14012_LC|GO14018_LC|GO14018_SC
248695811, 155.183618, 8.23984, 13.427, GO14067_LC|GO14012_LC|GO14018_LC|GO14063_LC|GO14052_LC
248718280, 160.758651, 8.753182, 18.402, GO14067_LC|GO14012_LC|GO14018_LC
248743680, 162.121929, 9.327052, 18.142, GO14067_LC|GO14018_LC
248744078, 161.751885, 9.337385, 18.053, GO14067_LC|GO14012_LC|GO14018_LC
248745301, 159.885832, 9.365522, 17.385, GO14067_LC|GO14012_LC|GO14018_LC
248750733, 160.962007, 9.493158, 18.662, GO14067_LC|GO14012_LC|GO14018_LC|GO14005_LC
248751905, 160.632634, 9.520331, 18.333, GO14067_LC|GO14012_LC|GO14018_LC
248755514, 164.201294, 9.60446, 16.825, GO14012_LC|GO14018_LC
248759672, 159.136377, 9.706072, 18.727, GO14067_LC|GO14012_LC|GO14018_LC
248766826, 161.467895, 9.876228, 17.751, GO14067_LC|GO14012_LC|GO14018_LC
248767646, 160.811245, 9.895591, 17.7, GO14067_LC|GO14012_LC|GO14018_LC
248777799, 154.386846, 10.14621, 18.092, GO14067_LC|GO14012_LC|GO14018_LC
248779449, 159.007869, 10.187454, 18.121, GO14067_LC|GO14012_LC|GO14018_LC
248849283, 159.04222, 11.887527, 18.75, GO14067_LC|GO14012_LC|GO14018_LC
248862470, 160.896182, 12.220825, 17.492, GO14067_LC|GO14012_LC|GO14018_LC|GO14063_LC
248863078, 163.673669, 12.235692, 17.149, GO14067_LC|GO14012_LC|GO14018_LC|GO14052_LC
248864625, 158.287665, 12.274039, 16.491, GO14067_LC|GO14012_LC|GO14018_LC
248891072, 158.713228, 12.977992, 17.51, GO14067_LC|GO14012_LC|GO14018_LC
248908851, 162.47686, 13.517982, 18.529, GO14067_LC|GO14012_LC|GO14018_LC