K2P${}^2$: Reduced data from campaigns 0-4 of the K2 mission

Abstract

Context: After the loss of a second reaction wheel the Kepler mission was redesigned as the K2 mission, pointing towards the ecliptic and delivering data for new fields approximately every 80 days. The steady flow of data obtained with a reduced pointing stability calls for dedicated pipelines for extracting light curves and correcting these for use in, e.g., asteroseismic analysis. Aims: We provide corrected light curves for the K2 fields observed until now (campaigns 0-4), and provide a comparison with other pipelines for K2 data extraction/correction. Methods: Raw light curves are extracted from K2 pixel data using the "K2-pixel-photometry" (K2P${}^2$) pipeline, and corrected using the KASOC filter. Results: The use of K2P${}^2$ allows for the extraction of the order of 90.000 targets in addition to 70.000 targets proposed by the community - for these, other pipelines provide no data. We find that K2P${}^2$ in general performs as well as, or better than, other pipelines for the tested metrics of photometric quality. In addition to stars, pixel masks are properly defined using K2P${}^2$ for extended objects such as galaxies for which light curves are also extracted.

arXiv commentAccepted for publication in Astronomy and Astrophysics

References in corpus (23)

• The K2 Mission: Characterization and Early results
• Kepler Input Catalog: Photometric Calibration and Stellar Classification
• A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission
• The Derivation, Properties and Value of Kepler's Combined Differential Photometric Precision
• Kepler Mission Stellar and Instrument Noise Properties
• Photometric Variability in Kepler Target Stars. II. An Overview of Amplitude, Periodicity, and Rotation in First Quarter Data
• The Kepler Pixel Response Function
• Precise time-series photometry for the Kepler-2.0 mission
• Kepler-21b: A 1.6REarth Planet Transiting the Bright Oscillating F Subgiant Star HD 179070
• Automated preparation of Kepler time series of planet hosts for asteroseismic analysis
• Oscillating red giants observed during Campaign 1 of the Kepler K2 mission: New prospects for galactic archaeology
• K2 Variable Catalogue II: Machine Learning Classification of Variable Stars and Eclipsing Binaries in K2 Fields 0-4
• K2P${}^2$ $-$ A photometry pipeline for the K2 mission
• That's How We Roll: The NASA K2 Mission Science Products and Their Performance Metrics
• Detection of solar-like oscillations in relics of the Milky Way: asteroseismology of K giants in M4 using data from the NASA K2 mission
• K2 Variable Catalogue: Variable Stars and Eclipsing Binaries in K2 Campaigns 1 and 0
• Kepler Mission Stellar and Instrument Noise Properties Revisited
• A PSF-based approach to Kepler/K2 data. I. Variability within the K2 Campaign 0 star clusters M 35 and NGC 2158
• High Precision Photometry for K2 Campaign 1
• Asteroseismology of solar-type stars with K2
• Asteroseismic properties of solar-type stars observed with the NASA K2 mission: results from Campaigns 1-3 and prospects for future observations
• EPIC 201585823, a rare triple-mode RR Lyrae star discovered in K2 mission data
• Asteroseismology of the Hyades with K2: first detection of main-sequence solar-like oscillations in an open cluster

Cited by in corpus (5)

• In-flight photometry extraction of PLATO targets: Optimal apertures for detecting extrasolar planets
• Extended Aperture Photometry of K2 RR Lyrae stars
• Four 'Peculiar' RRd Stars Observed by K2
• Asteroseismology of KIC 8263801:Is it a member of NGC 6866 and a red clump star?
• TESS Data for Asteroseismology: Photometry