Mission Overview
Kepler-Swift Active Galaxies and Stars Survey (KSwAGS)
Primary Investigator: Krista Lynne Smith
HLSP Authors: Krista Lynne Smith, Betsy Tian
Released: 2019-10-23
Updated: 2019-10-23
Primary Reference(s): Tian et al. (2019) & Smith et al. (2015)
Citations: See ADS Statistics
Overview
The Kepler-Swift Active Galaxies and Stars (KSwAGS) survey of four modules of the original Kepler FOV was conducted by Swift-XRT to find new active galactic nuclei for Kepler monitoring. The X-ray survey results were reported in Smith et al. 2015. Due to the co-aligned UVOT telescope on the Swift spacecraft, an ultraviolet survey of the Kepler field was conducted simultaneously in the uvm2 filter at 2246 Angstroms. The catalog includes the full reduced UV survey. It contains more than three times as many sources as GALEX NUV archival data in the Kepler field, including 17,000 sources with Kepler 30-minute light curves.
Data Products
The catalog file follows this naming convention:
hlsp_kswags_swift_uvot_all_uvm2_v1_catalog.fits
Data file types:
| _catalog.fits | The KSwAGS catalog of uvm2 sources |
The catalog contains 39,725 sources, and includes fluxes, statistical uncertainties, and systematic uncertainties as both magnitudes and fluxes in ergs/s/cm^2/Angstrom. The statistical uncertainty is the 1-sigma error of the flux or magnitude value. The systematic uncertainty is a parameter added by the HEASARC task "uvotsource" that accounts for the effect of a variable UVOT PSF to the corrected count rate. At the time of the reduction of this survey, this was estimated using a postulated fractional rms variation of the FWHM of a point source of 5%.
Note: The source of magnitude zero-points in the FITS header comes from https://swift.gsfc.nasa.gov/analysis/uvot_digest/zeropts.html.
Data Access
You may download the KSwAGS catalog in FITS format below.
| File | Size |
|---|---|
| 2.5 MB |