[vsnet-alert 21755] PTF1 J071912.13+485834.0: normal or precursor outburst

Keisuke Isogai isogai at kusastro.kyoto-u.ac.jp
Sun Dec 31 15:47:30 JST 2017


PTF1 J071912.13+485834.0: normal or precursor outburst

     Ken Menzies, Tamas Tordai and Itoh-san have reported the observations.
The object was 16.1 mag on Dec. 30 and has shown orbital-like modulations
whose period is 0.01860 (1) d and amplitude is 0.05-0.06 mag. The period
agrees with the orbital period of 0.01859(1) d. Thus this outburst is a normal
or precursor one.
     Judging from the maximum magnitude of 15.3 mag, this might be a precursor
outburst, so additional observations are recommended.



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