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Table 1

List of facilities, instruments and methods employed to determine the full spectral energy distribution of Proxima.

λ range (nm) Facility/Instrument Dataset Section Method

0.7–3.8 XMM-Newton/RGS 0551120201, 0551120301, 0551120401 2.1 Combined spectrum, energetic flare correction
3.8–10 ROSAT/PSPC RP200502N00, RP200502A01, RP200502A02, RP200502A03 2.2 Plasma fit, combined spectrum, energetic flare correction
10–40 EUVE proxima_cen__9305211911N 2.3 Spectrum, energetic flare correction
40–92 Model 2.4 Scaled from H Lyman α
92–117 FUSE D1220101000 2.5 Spectrum, geocoronal correction
117–121.4 and HST/STIS E140M O5EO01010, O5EO01020, O5EO01030, O5EO01040 2.6 Combined spectrum
121.7–170 O5EO02010, O5EO02020, O5EO02040
121.4–121.7 HST/STIS E140M O5EO01010, O5EO01020, O5EO01030, O5EO01040 2.6 Fit to H Lyman α wings to correct for ISM absorption
170–1000 HST/STIS G230LB, OCR7QQANQ, OCR7QQAOQ, OCR7QQARQ, OCR7QQASQ, 2.7 Spectrum
G430L,G750L OCR7QQAMQ, OCR7QQAPQ, OCR7QQAQQ
1000–30 000 Model IR photometry (Table 4) 2.8 Fit using BT-Settl models

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