摘要：Context. With only two functional reaction wheels,
Kepler cannot maintain stable pointing at its original target field and
has entered a new mode of observation called K2.
Aims. We describe a new pipeline to reduce K2 pixel files into light
curves that are later searched for transit like features.
Methods. Our method is based on many years of experience in planet
hunting for the CoRoT mission. Owing to the unstable pointing, K2 light curves present
systematics that are correlated with the target position in the charge coupled device
(CCD). Therefore, our pipeline also includes a decorrelation of this systematic noise. Our
pipeline is optimised for bright stars for which spectroscopic follow-up is possible. We
achieve a maximum precision on 6 hours of 6 ppm. The decorrelated light curves are
searched for transits with an adapted version of the CoRoT alarm pipeline.
Results. We present 172 planetary candidates and 327 eclipsing binary
candidates from campaigns 1, 2, 3, 4, 5, and 6 of K2. Both the planetary candidates and
eclipsing binary candidates lists are made public to promote follow-up studies. The light
curves will also be available to the community.
关键词：planets and satellites: detection;binaries: eclipsing;techniques: photometric
