Kepler Bonus: Aperture Photometry Light Curves of EXBA Sources
arXiv:2112.06683 · doi:10.3847/1538-3881/ac4331
Abstract
NASA's Kepler mission observed background regions across its field of view for more than three consecutive years using custom designed super apertures (EXBA masks). Since these apertures were designed to capture a region of the sky rather than single targets, the Kepler Science Data Processing pipeline produced Target Pixel Files, but did not produce light curves for the sources within these background regions. In this work we produce light curves for sources observed in the EXBA masks. These light curves are generated using aperture photometry estimated from the instrument's Pixel Response Function (PRF) profile computed from Kepler's full-frame images. The PRF models enable the creation of apertures that follow the characteristic shapes of the PSF in the image and the computation of flux completeness and contamination metrics. The light curves are available at MAST as a High Level Science Product (kbonus-apexba). Alongside this dataset, we present kepler-apertures, a Python library to compute PRF models and use them to perform aperture photometry on Kepler-like data. Using light curves from the EXBA masks we found an exoplanet candidate around Gaia EDR3 2077240046296834304 consistent with a large planet companion with a radius. Additionally, we report a catalog of 69 eclipsing binaries. We encourage the community to exploit this new dataset to perform in depth time domain analysis, such as eclipsing binaries demographic and others.
arXiv comment19 pages, 3 tables, and 9 figures. Accepted in AJ
References in corpus (42)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Array Programming with NumPy
- Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
- Astropy: A Community Python Package for Astronomy
- Gaia Data Release 2. Summary of the contents and survey properties
- The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
- Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
- Modules for Experiments in Stellar Astrophysics (MESA)
- Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
- Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
- MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
- Gaia Data Release 2: The astrometric solution
- Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
- MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
- Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
- A box-fitting algorithm in the search for periodic transits
- Efficient, uninformative sampling of limb darkening coefficients for two-parameter laws
- Kepler Input Catalog: Photometric Calibration and Stellar Classification
- EXOFAST: A fast exoplanetary fitting suite in IDL
- Overview of the Kepler Science Processing Pipeline
- A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission
- Gaia broad band photometry
- Kepler Eclipsing Binary Stars. VII. The Catalog of Eclipsing Binaries Found in the Entire Kepler Data-Set
- Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog With Measured Completeness and Reliability Based on Data Release 25
- Gaia Early Data Release 3 -- Catalogue validation
- Unresolved stellar companions with Gaia DR2 astrometry
- Juliet: a versatile modelling tool for transiting and non-transiting exoplanetary systems
- STARRY: Analytic Occultation Light Curves
- Selection, Prioritization, and Characteristics of Kepler Target Stars
- Asteroseismology of the open clusters NGC 6791, NGC 6811, and NGC 6819 from nineteen months of Kepler photometry
- Analytic Planetary Transit Light Curves and Derivatives for Stars with Polynomial Limb Darkening
- The Kepler Pixel Response Function
- EXOFASTv2: A public, generalized, publication-quality exoplanet modeling code
- Demystifying Kepler Data: A Primer for Systematic Artifact Mitigation
- Shock Breakout and Early Light Curves of Type II-P Supernovae Observed with Kepler
- Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the 2 Observations
- Long Term Photometric Variability in Kepler Full Frame Images: Magnetic Cycles of Sun-Like Stars
- Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
- Amplitudes of solar-like oscillations: constraints from red giants in open clusters observed by Kepler
- Know the Planet, Know the Star: Precise Stellar Densities from Kepler Transit Light Curves
- Linearized Field Deblending: PSF Photometry for Impatient Astronomers
- Kepler's Discoveries Will Continue: 21 Important Scientific Opportunities with Kepler & K2 Archive Data