Published April 25, 2026 | Version QR2-2026-04-24
Dataset Open

The SPHEREx Photometry and Image Fitting Framework (SPIFF) Spectrophotometry Library

Authors/Creators

  • 1. Planétarium de Montréal, Espace pour la Vie, 4801 av. Pierre-de Coubertin, Montréal, Québec, Canada ; Trottier Institute for Research on Exoplanets, Université de Montréal, Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC H3C 3J7, Canada
  • 2. Department of Astrophysics, American Museum of Natural History, Central Park West, New York, NY, USA
  • 3. School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
  • 4. United States Naval Observatory, Flagstaff Station, 10391 West Naval Observatory Rd., Flagstaff, AZ 86005, USA
  • 5. IPAC, Mail Code 100-22, Caltech, 1200 E. California Blvd., Pasadena, CA 91125, USA
  • 6. Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA
  • 7. NSF's National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Ave., Tucson, AZ 85719, USA
  • 8. Center for Astrophysics and Space Sciences, University of California San Diego, La Jolla, CA 92093, USA
  • 9. School of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK
  • 10. Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
  • 11. Backyard Worlds: Planet 9, USA
  • 12. Rajshahi University of Engineering & Technology, Kazla, Rajshahi-6204, Bangladesh ; Backyard Worlds: Planet 9, USA

Description

SPIFF is a Python spectrophotometry extraction tool for fast-moving point sources detected by the SPHEREx mission. This QR2-2026-04-24 data package bundles the QR2 SPIFF spectral-library snapshot published in Gagné et al. (2026, submitted to ApJ).

The bundled release includes 6003 high-quality reduced spectra, matching unbinned SPIFF spectra, per-dataset autotype PNG archives organized by science sample, template CSV products for 47 published standard subtypes, and the regenerated SPIFF machine-readable tables staged for release.

Source sample counts reflected in this bundle are: 2050 known ultracool dwarfs, 3008 known photometric candidates, 947 newly identified ultracool dwarfs, and 3739 candidate peculiar, young ultracool dwarfs and subdwarfs.

Files

00_README.txt

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