[vsnet-campaign-v4641sgr 65] V4641 Sgr: short-term oscillations disappeared

[Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>]

   On May 27, We performed time-series observation with an exposure 
time of 5s, using R-band filter at Ouda observatory.  The object has 
remained at the quiescent level.  
   In the obtained light curve, short-term fluctuations are disappeared. 
The power spectrum is flat (0.0001 - 1 Hz).  The 1-mag hump, which was 
observed on May 26 and 25 is also not seen.  The object is quite calm. 
   Does it indicate an end of the activity?  
   Or, is it a merely temporary calm state?
   Follow-up observations are encouraged.

Regards,
Makoto Uemura

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp