[Aavso-photometry] Help with followup requested (update)

[Patrick Wiggins]

Thanks to all who offered to followup.

However, the urgency is not what it may have been as I have learned  
that events involving the star have been measured and reported at  
least twice before.

So much for my having made a discovery.  :)

patrick


On 04 Jul 2009, at 22:14, Patrick Wiggins wrote:

> Hi,
>
> A few nights ago I was working HD149026 trying to come up with a  
> light curve of its known exo-planet's transit (something I'd done  
> successfully before).
>
> When I reduced the data I had a nice curve but not the one I had  
> been expecting.  In fact I'd erred and used such a long exposure  
> that the target star had saturated the chip so it's data were useless.
>
> However, the graph showed that the star I'd used as a check star  
> contained a very nice curve.
>
> I've used that same star as a check star before but never had this  
> "problem".
>
> So I contacted Bruce Gary at AXA who looked over my data and said  
> that the change in brightness was probably too large to have been  
> made by an exo-planet but that it could have been made by a red  
> dwarf eclipsing binary.
>
> He did some checking and said he could not find this EB (if that's  
> what it is) had been reported before.
>
> I've snail-mailed him a DVD with my images for him to examine  
> further but in the mean time he said I should ask others to observe  
> the object in hopes of establishing a period for it.
>
> Here is an image of the field in question with HD149026 being marked  
> as "V" and the star that created the curve marked as "2":
> http://users.wirelessbeehive.com/~paw/temp/MYSTERY01.JPG
>
> And here is a screen save of the curve (red is the worthless curve  
> made from the saturated HD149026 and the blue shows the curve  
> created by star "2":
> http://users.wirelessbeehive.com/~paw/temp/MYSTERY02.JPG
>
> HD149026 is located at RA 16:30:30.0, DEC +38:20:42.
>
> We've had nothing but bad weather here since the night of the  
> "discovery" so I'd appreciate it if others could occasionally have a  
> go at catching this one in the act.
>
> Clear skies!
>
> patrick
> 718