[vsnet-chat 1287] Re: Is V4140 Sgr monitored?

[Taichi Kato <tkato>]

Re: [vsnet-chat 1272] Is V4140 Sgr monitored?

Fraser Farrell wrote:

> This star is not in the "official" list of the VSS RASNZ under either 
> name.  However it might be observed occasionally by some VSS member(s)
> with a big telescope.

   This star may deserve more attention from some reasons.  1) This star
was originally discovered as a dwarf nova; there may be more outbursts,
or even superoutbursts.  2) The similar system, V2051 Oph, recently underwent
a superoutburst contrary to previous suggestions.  3) This star is eclipsing;
time-resolved observations of eclipses during outbursts, if present, will
be vital to understanding the accretion disk.  4) If this star doesn't
burst any more, we need an explanation: almost all objects below the period
gap are dwarf novae (SU UMa type).

   The VSOLJ prepared a chart before it received a GCVS designation, but
none could reach this south.  If only the object lies 10 deg north,
T. Watanabe-san should have surely monitored...

Regards,
Taichi Kato

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