[vsnet-alert 9526] Re: FN Sgr brightening (outburst + eclipse egress?)

[Berto Monard]

Hi,

I have to intensify observations on some of these symbiotic stars but
would think that such steep brightenings are more likely due to the
egress.

The tabled observations go back to end 2004/ beginning 2005. Perhaps we
are not using the same sequences.

Unfortunately two observations from the period June-July 2007 are
missing. They disappeared together with my observatory pc..

SGRFN	2453308.20		12.77	CCD-V		MLF
SGRFN	2453327.24		11.80	CCD-V		MLF
SGRFN	2453428.63		12.30	CCD-V		MLF
SGRFN	2453466.63		12.60	CCD-V		MLF
SGRFN	2453498.57		12.62	CCD-V		MLF
SGRFN	2453511.60		12.73	CCD-V		MLF
SGRFN	2453524.61		12.78	CCD-V		MLF
SGRFN	2453561.48		12.93	CCD-V		MLF
SGRFN	2453594.32		13.12	CCD-V		MLF
SGRFN	2453629.22		13.46	CCD-V		MLF
SGRFN	2453826.57		12.74	CCD-V		MLF
SGRFN	2453908.60		12.90	CCD-V		MLF
SGRFN	2453936.36		11.78	CCD-V		MLF
SGRFN	2453975.40		11.89	CCD-V		MLF
SGRFN	2454003.30		12.18	CCD-V		MLF
SGRFN	2454204.64		13.60	CCD-V		MLF
SGRFN	2454237.58		13.46	CCD-V		MLF
SGRFN	2454319.33		12.88	CCD-V		MLF
 
Regards,

Berto Monard

>>> Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> 03/09/2007 03:05 >>>
FN Sgr brightening (combination of eclipse egress and intrinsic
brightening?)
(Bortle's data from cvnet-outburst)

The rise apparently took place rather suddenly.

  YYYYMMDD(UT)   mag  observer
  20070511.743  13.50V  (Hiroyuki Maehara)
  20070603.708  13.33V  (Hiroyuki Maehara)
  20070621.100   137  (J. Bortle)
  20070713.099   137  (J. Bortle)
  20070717.100   136  (J. Bortle)
  20070722.617   132  (Yutaka Maeda)
  20070726.626  12.93V  (Hiroyuki Maehara)
  20070804.462   133  (Peter F. Williams)
  20070805.099   133  (J. Bortle)
  20070805.592   130  (Yutaka Maeda)
  20070806.444   134  (Peter F. Williams)
  20070809.099   132  (J. Bortle)
  20070813.099   119  (J. Bortle)
  20070814.099   119  (J. Bortle)
  20070818.100   118  (J. Bortle)
  20070828.460   116  (Peter F. Williams)
  20070901.000   117  (J. Bortle)
  20070902.000   117  (J. Bortle)
  20070902.482   120  (Peter F. Williams)