[Aavso-photometry] A new variable star in the field of TrES-1

[Arne Henden]

Ondrej,
   STARE and the other transit groups monitor *all* of the stars in their
respective fields.  They probably know about this eclipser, and
have a full light curve (though it is a little faint for them).
I wish that they would publish the data on their other stars sometime!
Your star, in my recent .dat file at

ftp://ftp.nofs.navy.mil/pub/outgoing/aah/sequence/tres1.dat

has the following astrometry/photometry:
    RA             DEC       V     B-V    U-B    V-R    R-I
19:04:29.18  +36:39:49.6  15.676  0.937  0.684  0.567  0.472
with a Verr of 0.127mags, indicating the variability (typical star
at this magnitude is 0.01mag err).

Arne

Ondrej Pejcha wrote:
> Dear colleagues,
> 
> during observations of TrES-1 transit on 4/5 September 2004 I noticed
> that a star located at 19:04:29.2 +36:39:49 (J2000, ~15.5 mag) is
> variable. The variability was confirmed by Pertti Pääkkönen (Finland)
> and Tonny Vanmunster (Belgium). The shape of the light curve (not full
> phase coverage, though) suggests a W UMa type variable star.
>    Further information on this star can be located at
> http://var.astro.cz/pejcha/newvar/ under identification "Pej 025".
> 
> As the TrES-1 observing window is now moving to America, I would be
> happy to receive any data you get on this star. Thanks.
> 
> Best regards,
> 
> Ondrej Pejcha
> Czech Republic
> 
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