[vsnet-alert 13636] Re: Possible outburst of DDE 22 in Camelopardalis

[info at astronomicalcentre.org]

We inform everyone, we can try to observe the possible outburst of DDE 22 in 
Camelopardalis by photometric filters next week by Montecatini Astronomical 
centre Italy www.astronomicalcentre.org

Best regards

Fabio Martinelli


----- Original Message ----- 
From: "Denis Denisenko" <d.v.denisenko at gmail.com>
To: <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>
Sent: Wednesday, August 31, 2011 8:49 AM
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