SPHEREx vs WISE: Warm Dust Sensitivity

Two-blackbody SED simulator (star + dust) with mock Gaia, 2MASS, WISE (W1,W2), and SPHEREx bandpasses. Toggle SPHEREx to compare detection significance for IR excess.

Stellar Teff (K): 5800

Distance (pc): 10

Dust T (K): 300

f_dust/f_star (bolometric): 1e-3

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Mock Photometry

Gaia + 2MASS + WISE

Band	λ range (µm)	Fν (mJy)	σ (mJy)	Model Fν (mJy)	Δ/σ

SPHEREx (0.75–5.01 µm)

λ min–max (µm)	Fν (mJy)	σ (mJy)	Model Fν (mJy)	Δ/σ
Eff. 2.40–5.01	—	—	—	—