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YZ Cnc, SU UMa, CR Boo outburst multiwavelength observations

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weo's picture
YZ Cnc, SU UMa, CR Boo outburst multiwavelength observations

AAVSO Alert Notice 617 announces an observing campaign beginning immediately on the cataclysmic variables YZ Cnc, SU UMa, and CR Boo. Please see the notice for details and observing instructions.

Many thanks, and Good observing,

Elizabeth Waagen

bjacobs's picture
Happy observing!

Dear observers,

We hope to obtain some great, unique light curves with this observing campaign. It will be of great value to our research. Thank you very much for your observations in advance.


Happy observing!

Bob Jacobs

cpmalo87's picture
YZ CNC is on the way up

CCD observations by several observers show YZ CNC on the rise from ~14 to m>13 during the  last 28 hours or so.  Franky Dubois (DUBF) had YZ CNC at ~12.7 about 8 hours ago. I just submitted a visual estimate: m=12.2, so the trend is continuing.  I will do at least one more visual estimate before I turn in tonight.  More confirmations in all bands are needed.



bjacobs's picture
Over the past 10 days YZ CNC

Over the past 10 days YZ CNC has been in outburst. This was a normal, short, outburst. The AAVSO community has been observing this variable in multiple colors. We would like to thank the observers that have submitted data to the database. Special thanks go to Alexander Purves for the majority of these observations. Even though this wasn't the initial purpose of our observing campaign, it will certainly help our research and we are very grateful to the community for observing this normal outburst.


We hope to see a similar level of community cooperation when YZ Cnc or SU Uma go into a superoutburst. So, please keep on observing these systems and CR Boo to find out when they're outbursting.


Happy observing!

daveh's picture
CR Boo

I imaged CR Boo this morning....looks like it might be on the rise. B=14.41, V=14.496, I= 14.598. I used iTelescope T21 this morning but T11 for all other CR Boo observations. I plan to keep observing as long as the weather in New Mexico holds out.



bjacobs's picture
YZ Cnc seems to be on the

YZ Cnc seems to be on the rise (<13th mag). It's still too early to tell whether this will be a normal outburst or a superoutburst. But, because we want to catch superoutbursts as early as possible, we please ask observers to start observing in multiple wavelengths.

We thank the AAVSO observers in advance.

dks's picture
CR Boo faint

CR Boo has entered one of its rather rare low states. I measured it at v=16.72 at JD 58199.74 (05:45 UT). I'm not sure if the return to normal high state that should occur in the next few days (or less) is of interest.

Shawn Dvorak (DKS)

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