[vsnet-alert 17449] Vend558 - new transient or LPV candidate in Cygnus

FIDRICH Róbert fidusz at zpok.hu
Fri Jul 4 16:04:03 JST 2014

Dear Friends,

A 13.15TG bright new variable star candidate, Vend558 was found two 
8x30s images taken on 2.02 July 2014. within the framework of our 
'Vendégcsillag-kereső' (Guest Star Hunter) programme.

The new variable star candidate, Vend558 was visible on all eight 
co-added 3x30s images taken on 2.02 July 2014. Nothing was visible at 
the given position on my reference images taken on 08.16 April and 12.15 
April (limit magnitude 14.8 TG) using a Canon EOS 1000D DSLR camera with 
300mm (zoom) focus telephoto lens.

Preliminary co-ordinates: 20:24:22.32 +31:09:22.9 (J2000.0) -- only 35' 
from Nova Cygni 2014.

There is a ~16.5V mag quite red (J-K=1,752) star, UCAC4 606-108140 
(USNOA2 1200-15054013)  close to the given position. Probably this star 
brightened. The preliminary photometry based on Tycho-2 mags, using the 
transient search mode of VaST meausured probably the combined magnitude 
of UCAC4 606-108140 and the ~15.45V bright UCAC4 606-108140 that lies 
only 12" apart from this red star.

The new variable star candidate Vend558 is the either the brightening of 
a new transient or more likely an LPV.

I hope we can confirm the discovery tonight. Further photometry and 
precise astrometry is encouraged.

Discovery and reference images can be found at:

Clear skies,

FIDRICH Robert (Fidusz)
drotlevel/email: fidusz at zpok.hu

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