(cba:news) SDSS080434.20+510349.2 is 4.5 mag brighter (fwd)

Joe Patterson jop at astro.columbia.edu
Sun Mar 5 10:38:30 EST 2006

Dear (northern) CBAers,

I just received this from Elena Pavlenko.  It sounds mighty interesting,
and is mighty current!

Have a shot at it!


---------- Forwarded message ----------
Date: Sun, 5 Mar 2006 15:05:41 +0200
From: Elena Pavlenko <pavlenko at crao.crimea.ua>
To: Joe Patterson <jop at astro.columbia.edu>
Subject: SDSS080434.20+510349.2 is 4.5 mag brighter

Dear Joe,

Last night (March 04/05), starting BVRI
photometry with 2.6-m Shain telescope of the
Crimean astroph. obs. at ~19h UT,
I found CV SDSS 080434.20+510349.2 at 4.5 mag
brighter than before. Accordingly to P. Szkody,
this object was 17.9 - 18.3, its spectroscopical
period 1.42 hrs is twice the photometrical one
(42.5 min). During ~0.2-d time interval this
object could display fast 0.5-mag brightening,
the 42.5-min oscillations increase their amplitude
from 0.05 mag to 0.2 mag!  At another time
this star could show no brightness oscillations.
No brightenings/outbursts were known so far
for this object. During this bright state
over ~4 h duration the star displayed both oscillations
and quiet state, and mean brightness remained stable.

As long as it is 14th mag star, it is  accessible
for the amathor observation!

Elena Pavlenko

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