Image Details
Caption: Figure 5. Hybrid SPHEREx template construction
The complete figure set (47 images) is available in the online journal.
Examples of hybrid SPHEREx template construction. Synthetic spectrophotometry from a known spectral standard is shown in blue (top), and a raw SPHEREx template constructed from the median of all high-quality SPHEREx data with the appropriate spectral type is shown in red (bottom). The hybrid template, constructed by extending the synthetic standard-based spectrophotometry with the raw SPHEREx template beyond 2.4 μm (vertical, dashed line) is shown in black (middle row). For some templates, this limit was moved to 2.1–2.3 μm when the quality of the ground-based data was insufficient in this region. The gray error bars do not represent the error on the mean, but rather the median absolute deviation of all observed SPHEREx spectra to represent visually the typical spread in observed SPHEREx fluxes, which are mostly due to the limited S/N of the spectrophotometry. Splines are shown as solid lines to guide the eye only. See Section 4.2 for more details.
(The data used to create this figure are available in the online article.)
(The data used to create this figure are available.)
© 2026. The Author(s). Published by the American Astronomical Society.