Re: sdss1502+33 and others

From: Joe Patterson <*jop_at_astro.columbia.edu*> Date: Thu, 16 Jul 2009 17:48:47 -0400 · jop_at_astro.columbia.edu

Hi Russ,

Yeah. I was recommending that RX1643+34=V1084 Her be dropped... but 
definitely not V442 Oph, and also not SDSS1502+33 unless yer convinced 
it's too faint.  The latter is definitely the right target for as long 
as it stays decently bright.

Don't forget the intermediate polars either!  One merit of these stars 
is that a relatively brief time series (say 2 hours, though 3 would be a 
lot better) supplies the needed nightly pulse timing - no need for the 
very long runs that some of our superhump specials would greatly prefer.

joe

Russ Garrett wrote:
> Wait. It's RXJ were through with correct? is V422 oph the main target now?
> 
> 
> -----Original Message-----
> From: cba-news-bounces@cbastro.org [mailto:cba-news-bounces@cbastro.org]
> On Behalf Of Joe Patterson
> Sent: Tuesday, July 14, 2009 12:38 PM
> To: cba-news@cbastro.org
> Subject: (cba:news) sdss1502+33 and others
> 
> Dear CBAers,
> 
> Thanks for all the great data on SDSS1502 = Boo!  Very well-defined
> eruption, lots of eclipses and superhumps and features well suited for
> timing studies.  It's down to around 16 now, so I imagine will soon
> disappear from most of your radar screens.  But if you're up to a
> deep-sky challenge, stay with it.
> 
> Just to reiterate, V442 Oph is in a very rare low state (around 17) and
> we'd like to hammer away on it for a while longer.  Still pretty sparse
> CBA coverage (nearly all from Bob Rea)... though enough to define the
> orbital period.  A good star to gang up on.
> 
> Time to quit on RX1643+34 = V1084 Her.  We've got enough.
> 
> Many DQ Her stars (intermediate polars) in the sky now.  We track the
> pulse timings of these stars, and now's the time for the early-season
> timings that are vital.  DQ Her, V2306 Cyg, and V455 And are all good
> northern targets now.  V1223 Sgr, RX1730-05 (Oph), AO Psc, and FO Aqr
> are all good southern or equatorial targets.
> 
> We'd like to go another 1-2 weeks on V4743 Sgr.  What a strange star -
> full of periods, but still quite mysterious as to what they mean!
> 
> joe
> 