From jop at astro.columbia.edu  Sun Jul  3 23:09:10 2016
From: jop at astro.columbia.edu (Joe Patterson)
Date: Sun, 3 Jul 2016 23:09:10 -0400
Subject: (cba:news) Fwd: (cba:chat) V1838 Aql (=PNV J19150199+0719471)
 confirmation??
In-Reply-To: <F458AB4C-472B-4DBB-82A9-13C384D02D8B@gmail.com>
References: <F458AB4C-472B-4DBB-82A9-13C384D02D8B@gmail.com>
Message-ID: <99e93926-3d28-7f89-4fff-c5a6986a423d@astro.columbia.edu>

just to cover cba-news readers...


-------- Forwarded Message --------
Subject: (cba:chat) V1838 Aql (=PNV J19150199+0719471) confirmation??
Date: Sun, 3 Jul 2016 22:26:33 -0400
From: Enrique de Miguel <edmiguel63 at gmail.com>
Reply-To: cba-chat at cbastro.org
To: cba-chat at cbastro.org

According to vsnet-alert 19947, V1838 Aql (=PNV J19150199+0719471)
is in superoutburst (mag 13.44 on Jul 1). This is a WZ Sge star that we
observed intensively back in 2013 during its first reported eruption.

Can anyone confirm if this object is in superoutburst?
If so, it would be a mighty interesting target, especially at this stage
when early superhumps are to be expected.

Regards,
Enrique
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From jop at astro.columbia.edu  Thu Jul  7 18:59:59 2016
From: jop at astro.columbia.edu (Joe Patterson)
Date: Thu, 7 Jul 2016 18:59:59 -0400
Subject: (cba:news) stars for July-August
Message-ID: <7e558c07-ad81-954f-67f8-26f777411191@astro.columbia.edu>


Dear CBAers,

Our campaigns on LX Ser and DQ Her can be ended.  Too many other 
interesting targets to chase!  The campaign on RX2133+51 is going just 
great; the light curves are just beautiful and the periods very well 
defined - kudos to Jim Jones, Etienne Morelle, and Douglas Barrett.  But 
Enrique is the prime mover on this one; he'll write to advise on whether 
to continue.

July is prime time for the DQ Her stars, and we're well-positioned to 
take great advantage, with our lengthy tracking of the changing spin 
periods.  FO Aqr is highest priority, since it appears to be in a 
first-ever low state (about 15th mag).  Here are the others which 
deserve your attention now:

V2306 cYG
v2069 cYG
AO Psc
V1033 Cas
NY Lup

Then there are the old novae, confirmed and likely. I recommend V1494 
Aql as the best of these; we have a record of the steadily changing 
eclipse waveform since the 1999 nova eruption, and this will go far to 
constrain the origin of the light.  V1500 Cyg would be great, but it's 
tough (18th mag, but large-amplitude signal).  Finally, there's V4743 
Sgr, which Gordon and Berto are doing very well on - showing the spin 
and orbital periods.  A couple more weeks would conclude the V4743 Sgr 
campaign.

Enrique will add to these!

joe






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From jop at astro.columbia.edu  Thu Jul 28 18:11:56 2016
From: jop at astro.columbia.edu (Joe Patterson)
Date: Thu, 28 Jul 2016 18:11:56 -0400
Subject: (cba:news) AR Scorpii
Message-ID: <961c04d0-346a-daca-70af-c03fd22f0c4a@astro.columbia.edu>

Thanks, Josch, for your posting on cba-chat... and for finding such a 
fascinating star.

I had never heard of AR Sco before... but now it has become important 
and mysterious - and it's right up our alley!  At 14th magnitude, 
everyone should be able to time-resolve that 2 minute signal.  And at 
1621-22, it's both seasonal and (somewhat) available to both hemispheres.

I dunno what we'll find - but let's find out!

We can quit on DQ Her and Swift 2124+05, but should definitely observe 
the novae V4743 Sgr, V1494 Aql, and V339 Del.  And get a few eclipse 
minima of V Sge.  Still studying the other in-progress campaigns...

joe p


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