Light Curves from a Search for Variable Stars in the Globular Cluster M4 with K2

The data are 4554 light curves derived from images taken of the globular
cluster M4 by the Kepler space telescope during the K2 portion of its
mission, specifically during Campaign 2 of that mission, which occurred in
2014. A total of 3856 images were taken over approximately three months at
a cadence of approximately half an hour. The purpose of these observations
was to find stars and other objects that vary in brightness over time ---
variable stars. Also included is a table with associated information for
each of the 4554 objects and their light curves. Please consult README.txt
for file information. In brief, object_information.txt is a table
containing information on the 4554 objects for which we obtained light
curves, and wallace_data.tgz is a zipped tarball containing a copy of
README.txt, object_information.txt, and the 4554 individual light curve
files (*_lc.csv). LICENSE.txt contains the license under which the data
are released.