SIMBAD references

2015ApJ...806...30L - Astrophys. J., 806, 30 (2015/June-2)

K2P2– a photometry pipeline for the K2 mission.


Abstract (from CDS):

With the loss of a second reaction wheel, resulting in the inability to point continuously and stably at the same field of view, the NASA Kepler satellite recently entered a new mode of observation known as the K2 mission. The data from this redesigned mission present a specific challenge; the targets systematically drift in position on an Å6 hr timescale, inducing a significant instrumental signal in the photometric time series–this greatly impacts the ability to detect planetary signals and perform asteroseismic analysis. Here we detail our version of a reduction pipeline for K2 target pixel data, which automatically defines masks for all targets in a given frame; extracts the target's flux and position time series; corrects the time series based on the apparent movement on the CCD (either in 1D or 2D), combined with the correction of instrumental and/or planetary signals via the Kepler Asteroseismic Science Operations Center (KASOC) filter, thus rendering the time series ready for asteroseismic analysis; computes power spectra for all targets; and identifies potential contaminations between targets. From a test of our pipeline on a sample of targets from the K2 campaign 0, the recovery of data for multiple targets increases the amount of potential light curves by a factor of. Our pipeline could be applied to the upcoming TESS and PLATO 2.0 missions.

Abstract Copyright:

Journal keyword(s): asteroseismology - methods: data analysis - stars: solar-type - techniques: image processing - techniques: photometric

Simbad objects: 6

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