Fig. 2.
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Part of the Chiron spectrum of T CrB for 2022-08-16, recorded in slicer mode for a resolving power of ∼78 000. The NaI line at 5890 Å is de-convolved into the stellar component (at −28.5 km s−1 heliocentric velocity) and additional two of interstellar origin (at −22.0 and −15.0 km s−1), with an indication of the corresponding interstellar reddening.
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