(cba:news) outburst of YY Dra = DO Dra

Joe Patterson jop at astro.columbia.edu
Thu Nov 16 15:09:27 EST 2000

Dear CBAers, 

Patrick Schmeer and Chris Jones have caught good ol' YY Dra going into
eruption last night.  At mag 10.6-11, it should be plenty bright, and it
should be a prime target of borealite CBAers.  Sorry about the lousy
timing for a star at 11h 50m, but the dec of +72 degrees should be 

We're interested in variations near the 4 hr orbital period, but also the
8.8 minute spin period (of the magnetic white dwarf).  Since the star
often has power at the first harmonic (i.e. 4.4 minutes), make sure your
observations are pretty rapid (every 1 minute would be OK, every 40 s
would be better).

Several past outbursts have been quite short, not lasting long enough for
us to get any appreciable amount of data.  Let's see what we can do this

By the way, the PX And data is just now starting to come in.  A very nice
evening target!


---------- Forwarded message ----------
Date: Thu, 16 Nov 2000 20:01:59 +0100
From: Patrick Schmeer <extpasc at rz.uni-sb.de>
To: vsnet-obs at kusastro.kyoto-u.ac.jp
Subject: (cba:news) [vsnet-obs 30734] DO Dra outburst

DRADO 20001115.72  <125 Scp
DRADO 20001115.90  <133 Scp
DRADO 20001116.729  111 Scp
DRADO 20001116.776  110 Scp 

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