vsnet-alert 13737 superhumps evolution

[vsnet-alert 13737] 1RXS J231935.0+364705: superhumps evolution

Denis Denisenko d.v.denisenko at gmail.com
Fri Oct 7 17:55:49 JST 2011

Fabio Martinelli (Astronomical Centre at Montecatini, Italy) has
obtained fifty 160-sec exposures of J2319+3647 covering 2.3 hours
interval from 00:58 to 03:18 UT on 2011 Oct. 05. Light curve
(unfiltered magnitudes with Red zero point) is uploaded to
http://pics.livejournal.com/bigdenru/pic/000adk0k/ I was using R=14.4
as the comparison star and R=14.2 as check star from my 2007 finder
chart at http://hea.iki.rssi.ru/~denis/J2319+3647-comps.gif

Amplitude of orbital modualtion has decreased to 0.13-0.14m. It was
0.24m during Oct. 01/02 observations by Etienne Morelle.

Denis Denisenko

P.S. Regarding the new object from vsnet-alert 13736: dwarf nova 1RXS
J231935.0+364705 is also a hard ROSAT source (HR1=1.00+/-0.09,
HR2=0.47+/-0.16).

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