A possible disk formation for V548 Per. Following a notice from Umberto Sollecchia (on 11 december he observed a "lack" of h-alpha absorption line respect the previous spectrum, see graph below), I took a spectrum with Lhires III 1200, finding a narrow emission component at center of broader absorption.
Since the 11 december profile has less resolution (and SNR) than the one taken on 29/9/2011 (with Lisa), I try to filter my mid-res profile decreasing resolution to Lisa level to understand if the emission component would be noticeable. It seems a real profile change. Unfortunately there aren't observations between 2011 and today to check the evolution.
Paolo
V548 Per activity
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