V548 Per activity

Paolo Berardi · Post by **Paolo Berardi** » Sun Dec 28, 2014 10:57 am

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