Fig. 7.
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DECaLS three-colour image of the H I-undetected LTDs. The optical three-colour image for the five blue, LTDs between Mr′ = −12 and −14.2 that we would expect to detect in H I. Their colour, luminosity, morphology and surface brightness is the same as H I-detected LTDs, suggesting that these five LTDs have very recently lost their H I.
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