Fig. 1
Spectra of Tc 1 (in black) and HR 6334 (in red) around the 4428 Å (left panel) and 6309 Å DIBs (right panel). Both DIBs are found to be unusually strong in Tc 1 while HR 6334 – with a higher E(B − V) of 0.42 – does not show evidence of their presence. The telluric line corrected spectrum of Tc 1 around 6309 Å (right panel) is shown by the smooth line (in green).
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