[vsnet-alert 11239] Re: SDSS J140429.37+172359.4: large-amplitude modulation

[Pavol A. Dubovsky]

The object faded. it is about 17 mag this evening. I can't follow it 
with 28 cm and moonlight.

Pavol A. Dubovsky
AO Kolonica Saddle

Taichi Kato  wrote / napísal(a):
> SDSS J140429.37+172359.4: large-amplitude modulation
> 
>    Kyoto team (Ohshima-san et al.) observed this dwarf nova
> (=1RXS J140429.5+172352), reported to be in outburst (cvnet message),
> on May 2 and detected 0.4-mag variation.  Although the waveform of the
> first hump resembled that of a superhump, the exact periodicity was not
> confirmed due to the subsequent passage of clouds.  If this was indeed
> a superhump, the profile suggest a period of 1 hr or even shorter
> (and would be amazing!).  Alternatively, the object might resemble
> IQ Eri, which showed large-amplitude irregular variations.
> This finding appears to be consistent with the report by Etienne Morelle
> in cvnet, and further analyzed by Jeremy Shears.
> Further observations are strongly urged to better understand the
> nature of the variation.
>