# Summary of K2 Program GO4090

Title: Variability and Dynamics of Young Stars

PI: Caldwell, Douglas A. (SETI Institute)
CoIs: Chiar, Jean; Smith, Jeffrey Claiborne; Batalha, Natalie Marie; Carey, Sean Joseph; Morris, Robert L; Seader, Shawn Eugene

We seek to understand the conditions and dynamics of the earliest stages of planetary system formation through a study of the variability of young stars in the K2 Campaign-4 field of view. We propose to observe at long cadence ~50 young stellar objects, T-Tauri stars, pre-main sequence stars, and flare stars selected from the literature and associated with the Pleiades and Hyades star clusters. The objects range in age from tens to hundreds of million years and in spectral type from late-F through mid-M. We will analyze the variability of these objects on timescales ranging from hours to months in order to model the accretion onto the star, detect disk density variations, measure rotation rates, and search for eclipsing/transiting companions. The results of our analysis will lead to a better understanding of the range of conditions under which planetary systems form.  The proposed work uses the unique capabilities of K2 to collect data with the precision, duration, and duty cycle needed for such a study.

# Targets requested by this program that have been observed (57)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
210354201, 55.080445, 12.337943, 12.141, GO4020_LC|GO4060_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4106_LC
210355746, 58.103167, 12.378796, 9.943, GO4008_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4104_LC
210370784, 59.527183, 12.769413, 8.888, GO4090_LC|GO4021_LC|GO4033_LC
210612142, 65.586623, 17.136604, 17.89, GO4090_LC|GO4092_LC|GO4015_LC
210613397, 56.558337, 17.154839, 11.993, GO4020_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4006_LC|GO4081_LC|GO4109_LC
210631263, 60.853952, 17.407212, 11.279, GO4020_LC|GO4057_LC|GO4090_LC|GO4092_LC
210658027, 65.219772, 17.778184, 13.817, GO4020_LC|GO4057_LC|GO4076_LC|GO4097_LC|GO4011_LC|GO4090_LC|GO4092_LC
210658415, 56.359407, 17.783213, 12.049, GO4020_LC|GO4060_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4106_LC
210662824, 66.794042, 17.845179, 10.039, GO4060_LC|GO4090_LC|GO4092_LC|GO4104_LC
210689130, 66.770253, 18.207532, 7.025, GO4023_LC|GO4090_LC|GO4033_LC|GO4007_LC
210689309, 66.774885, 18.210282, 8.717, GO4090_LC|GO4033_LC|GO4007_LC
210714090, 56.504193, 18.56672, 9.391, GO4057_LC|GO4090_LC|GO4033_LC
210716088, 66.746593, 18.596865, 19.403, GO4090_LC|GO4092_LC|GO4015_LC
210759564, 65.534627, 19.256181, 11.902, GO4020_LC|GO4097_LC|GO4090_LC|GO4109_LC
210777988, 65.497644, 19.535116, 9.609, GO4076_SC|GO4023_LC|GO4089_LC|GO4076_LC|GO4029_LC|GO4090_LC|GO4092_LC|GO4104_LC
210780789, 65.555513, 19.577566, 14.2, GO4076_LC|GO4090_LC|GO4092_LC|GO4015_LC
210780956, 65.520712, 19.58012, 11.771, GO4023_LC|GO4090_LC|GO4092_LC
210783336, 63.210954, 19.616045, 12.082, GO4057_LC|GO4023_LC|GO4029_LC|GO4090_LC|GO4092_LC|GO4064_LC
210798039, 66.167725, 19.838713, 14.722, GO4097_LC|GO4090_LC
210805120, 62.054163, 19.944247, 12.525, GO4020_LC|GO4057_LC|GO4090_LC|GO4092_LC
210818897, 61.331643, 20.157102, 10.514, GO4020_LC|GO4057_LC|GO4060_LC|GO4090_LC|GO4092_LC|GO4104_LC
210890748, 56.383279, 21.246695, 8.615, GO4090_LC|GO4033_LC
210895951, 57.044124, 21.329068, 8.7, GO4090_LC|GO4033_LC|GO4007_LC
210921519, 53.536471, 21.728973, 9.472, GO4090_LC|GO4033_LC
210929228, 61.378688, 21.852944, 14.089, GO4057_LC|GO4076_LC|GO4097_LC|GO4090_LC|GO4092_LC|GO4015_LC
210934391, 61.118695, 21.934603, 11.055, GO4023_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4104_LC
210936710, 61.16405, 21.971816, 14.26, GO4020_LC|GO4057_LC|GO4023_LC|GO4076_LC|GO4097_LC|GO4090_LC|GO4092_LC|GO4015_LC
210936757, 61.166032, 21.972631, 13.125, GO4020_LC|GO4057_LC|GO4060_LC|GO4097_LC|GO4090_LC|GO4092_LC|GO4015_LC
210946924, 60.723221, 22.136585, 8.79, GO4023_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4083_LC|GO4104_LC
210969614, 61.292223, 22.496697, 11.206, GO4105_SC|GO4020_LC|GO4057_LC|GO4105_LC|GO4090_LC|GO4107_LC|GO4104_LC
210970173, 52.879833, 22.50581, 9.476, GO4090_LC|GO4033_LC
210972491, 60.091751, 22.544027, 16.003, GO4090_LC
210977750, 61.89594, 22.627619, 14.555, GO4020_LC|GO4097_LC|GO4011_LC|GO4090_LC|GO4006_LC
210988075, 55.566328, 22.786456, 7.356, GO4090_LC|GO4033_LC
210996505, 56.659972, 22.919779, 9.426, GO4018_LC|GO4032_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4086_LC|GO4064_LC|GO4012_LC|GO4081_LC|GO4024_LC
210996662, 56.845408, 22.922122, 8.177, GO4018_LC|GO4048_LC|GO4090_LC|GO4033_LC|GO4086_LC|GO4012_LC|GO4045_LC|GO4035_LC|GO4024_LC
211038410, 58.82962, 23.583818, 17.703, GO4090_LC|GO4092_LC|GO4015_LC
211050460, 57.275455, 23.781247, 10.483, GO4020_LC|GO4018_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4104_LC|GO4037_LC|GO4024_LC
211053737, 57.726362, 23.834868, 11.101, GO4020_LC|GO4018_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4104_LC|GO4024_LC
211063000, 57.205515, 23.977259, 12.246, GO4020_LC|GO4018_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4106_LC|GO4024_LC
211066337, 56.054429, 24.030806, 10.778, GO4018_LC|GO4032_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4024_LC
211066412, 56.053078, 24.031778, 12.006, GO4089_LC|GO4090_LC
211067472, 61.819718, 24.04937, 17.828, GO4090_LC|GO4092_LC|GO4015_LC
211070599, 56.061063, 24.101882, 10.235, GO4018_LC|GO4032_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4064_LC|GO4104_LC|GO4024_LC
211087059, 58.605179, 24.360078, 10.793, GO4105_SC|GO4020_LC|GO4060_LC|GO4029_LC|GO4105_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4104_LC|GO4037_LC|GO4082_LC
211091848, 56.618392, 24.433939, 10.912, GO4018_LC|GO4057_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4086_LC|GO4104_LC|GO4024_LC
211096368, 56.014803, 24.504237, 10.615, GO4018_LC|GO4057_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4104_LC|GO4052_LC|GO4024_LC|GO4082_LC
211101761, 56.109488, 24.589711, 11.176, GO4032_SC|GO4020_LC|GO4018_LC|GO4057_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4106_LC|GO4104_LC|GO4024_LC
211104793, 63.16959, 24.637709, 13.798, GO4020_LC|GO4090_LC|GO4015_LC
211106344, 58.009403, 24.663243, 11.659, GO4020_LC|GO4018_LC|GO4032_LC|GO4060_LC|GO4076_LC|GO4048_LC|GO4090_LC|GO4092_LC|GO4064_LC|GO4106_LC|GO4024_LC
211108319, 63.213409, 24.695632, 11.554, GO4020_LC|GO4089_LC|GO4090_LC
211114317, 56.083695, 24.796175, 10.556, GO4032_SC|GO4074_SC|GO4018_LC|GO4032_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4074_LC|GO4091_LC|GO4104_LC|GO4024_LC|GO4082_LC
211120842, 56.4255, 24.906009, 9.418, GO4018_LC|GO4032_LC|GO4060_LC|GO4048_LC|GO4029_LC|GO4090_LC|GO4033_LC|GO4007_LC|GO4091_LC|GO4064_LC|GO4012_LC|GO4104_LC|GO4024_LC
211137540, 60.518384, 25.202835, 18.301, GO4090_LC|GO4092_LC|GO4015_LC
211159819, 58.649871, 25.618936, 12.146, GO4020_LC|GO4090_LC|GO4092_LC|GO4015_LC
211159865, 58.648171, 25.619768, 13.524, GO4020_LC|GO4076_LC|GO4090_LC|GO4092_LC|GO4015_LC
211167048, 58.307165, 25.756064, 10.187, GO4090_LC|GO4033_LC|GO4007_LC