[vsnet-alert 13632] Re: Possible outburst of DDE 22 in Camelopardalis

[Ian Miller]

Using the sequence given in 'vsnet-alert 13629', I measured DDE 22 as,
 
17.0R @20110901.048 UT. and as
16.7CR @20110901.089 UT.
 
Best wishes from Ian.
 
 


> Date: Wed, 31 Aug 2011 10:49:49 +0400
> From: d.v.denisenko at gmail.com
> To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
> Subject: [vsnet-alert 13629] Possible outburst of DDE 22 in Camelopardalis
> 
> New cataclysmic variable in Camelopardalis DDE 22 (USNO-B1.0
> 1597-0071405, 2MASS 04304278+6944281, GALEX J043042.9+694428) appears
> to be going into outburst. Observations by Stas Korotkiy and Vladimir
> Gerke with TAU station of Ka-Dar observatory have shown it brightened
> by ~2 mags in last 2 nights.
> 
> YYYYMMDD(UT) mag observer
> 20110825.935 190C TAU station
> 20110827.889 201C TAU station
> 20110828.908 195C TAU station
> 20110829.745 184C TAU station
> 20110830.834 176C TAU station
> 
> I request the confirmation of outburst, and should it be confirmed -
> time-resolved photometry (if someone can do time series for an object
> that faint). The maximum brighthness of star is perhaps 15.5-15.9.
> 
> Star has been added to AAVSO VSX as DDE 22 with AUID 000-BKD-609.
> 
> 10'x9' color-combined DSS finder chart is available at
> http://hea.iki.rssi.ru/~denis/J0430+6944-comps.gif
> 
> I was using 147 as comparison star and 166 as check star.
> 
> This would be the first observed outburst of this star since its
> discovery a month ago. See arxiv:1108.5122 and
> http://hea.iki.rssi.ru/~denis/VarDDE.html for more details.
> 
> Denis Denisenko