Spectra of magnetically active features on TRAPPIST-1

DescriptionThis dataset contains four difference spectra extracted from JWST/NIRISS time-series spectroscopy of TRAPPIST-1 during stellar flare events. The spectra represent the spectral energy distributions of magnetically active surface features that vanished during the flares. Each spectrum is computed by subtracting the pre-flare spectrum from the post-flare spectrum, thereby isolating the contribution of the disappearing feature.

File FormatEach file is a plain-text table with three columns:

Column 1: Wavelength (in microns)

Column 2: Flux density (in erg s−1−1 cm−2−2 Å−1−1)

Column 3: 1σ uncertainty on the flux density (in erg s−1−1 cm−2−2 Å−1−1)

ReferenceFor interpretation and methodology, see:Vasilyev et al. (2025), Flares on TRAPPIST-1 reveal the spectrum of magnetic features on its surface, ApJL (submitted).DOI will be added upon publication.