{
  "id": "1504.05199",
  "version": "v1",
  "published": "2015-04-20T20:01:27.000Z",
  "updated": "2015-04-20T20:01:27.000Z",
  "title": "K2P$^2$ $-$ A photometry pipeline for the K2 mission",
  "authors": [
    "Mikkel N. Lund",
    "Rasmus Handberg",
    "Guy R. Davies",
    "William J. Chaplin",
    "Caitlin D. Jones"
  ],
  "comment": "14 pages, 20 figures, Accepted for publication in The Astrophysical Journal (Apj)",
  "categories": [
    "astro-ph.SR",
    "astro-ph.EP",
    "astro-ph.IM"
  ],
  "abstract": "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 a ~6 hour time scale, 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 KASOC filter (Handberg & Lund 2014), 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 ${\\geq}10$. Our pipeline could be applied to the upcoming TESS (Ricker et al. 2014) and PLATO 2.0 (Rauer et al. 2013) missions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-04-20T20:01:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "k2 mission",
      "photometry pipeline",
      "k2 target pixel data",
      "planetary signals",
      "perform asteroseismic analysis"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}