giggseh/kepler-lc-star-params

--- license: mit tags: - astronomy - kepler - lightcurves - exoplanets pretty_name: Kepler Lightcurves Star Params --- # Kepler Stellar Lightcurves Complete Kepler mission lightcurves for ~190,000 stars, paired with stellar parameters. Each shard contains 500 stars. ## Fields | Field | Type | Description | |-------|------|-------------| | `target_id` | int | Kepler Input Catalog (KIC) ID | | `flux` | list\<float32\> | Brightness measurements, normalised to median = 1.0 | | `time` | list\<float64\> | Timestamps (BJD - 2454833.0, days) | | `n_points` | int | Number of measurements | | `duration_days` | float | Observation span | | `Teff` | float | Effective temperature (K) | | `logg` | float | Surface gravity (dex) | | `radius` | float | Stellar radius (R☉) | | `mass` | float | Stellar mass (M☉) | | `FeH` | float | Metallicity [Fe/H] (dex) | | `age` | float | Stellar age (Gyr) | ## Processing Extracted from Kepler DR25 FITS files with minimal transformation: 1. **PDCSAP_FLUX** used (Kepler pipeline already removed spacecraft systematics) 2. Quality-flagged points removed (`SAP_QUALITY == 0` only) 3. NaN values removed 4. All quarters stitched into one time series per star 5. Flux divided by median (normalised to ~1.0) No detrending, flattening, or outlier removal applied. ## Stellar Parameter Sources - Teff, logg, radius, mass, FeH: NASA Exoplanet Archive Q1-Q17 DR25 Supplemental Stellar (Mathur et al. 2017) - Age: Berger et al. (2020) Gaia-Kepler Stellar Properties Catalog ## Raw Data FITS files from MAST: `https://archive.stsci.edu/missions-and-data/kepler/kepler-bulk-downloads`