(cba:news) [vsnet-alert 5044] RE: 1432-0033 is a new UGSU dwarf nova (fwd)

Joe Patterson jop at astro.columbia.edu
Tue Jun 27 16:57:48 EDT 2000

Dear CBAers,

This report by Tonny seems awfully interesting.  With this sky position,
he has no chance of learning a usefully precise superhump period from
European observations alone.  Time for the Yanks and the Kiwis to jump
into the fray and measure those superhumps!  With that longitude spread
we'll certainly get Psh despite the very unfavorable time of year.

Re other objects, we have campaigns going on V1315 Aql and V603 Aql.
Both are in need of attention.  V603 is especially good for the smaller
scopes since it is plenty bright and has no hemispheric loyalties.


---------- Forwarded message ----------
Date: Tue, 27 Jun 2000 20:46:52 -0000
From: Tonny Vanmunster <Tonny.Vanmunster at advalvas.be>
To: cba-news <cba-news at cbastro.org>,
     vsnet-alert <vsnet-alert at kusastro.kyoto-u.ac.jp>
Subject: (cba:news) [vsnet-alert 5044] RE: 1432-0033 is a new UGSU dwarf nova

Please note there's an error in the coordinates I listed for this object. The coordinates I quote (14h32m25.88s, -00d33'00".9) are actually B1950, not J2000. The object is listed as Vir4 in the Downes, Webbink and Shara catalogue, at J2000 coordinates 14 35 00.14, -00 46 07.0.


Thanks John, for pointing this out !

> -----Original Message-----
> From: owner-vsnet-alert at kusastro.kyoto-u.ac.jp
> [mailto:owner-vsnet-alert at kusastro.kyoto-u.ac.jp]On Behalf Of Tonny
> Vanmunster
> Sent: maandag 26 juni 2000 23:35
> To: cba-news; vsnet-alert
> Subject: [vsnet-alert 5037] 1432-0033 is a new UGSU dwarf nova
> Dear colleagues,
> I'm observing the dwarf nova 1432-0033 in response to the recent 
> outburst reported by R. Stubbings (VSNET-ALERT 5030), using the 
> 0.35-m f/6.3 telescope with unfiltered ST-7 CCD of CBA Belgium 
> Observatory. Also running my "real-time" light curve generator, 
> allowing on-the-fly CCD data reduction and light curve visualisation.
> The light curve clearly shows a superhump-like profile with an 
> amplitude of about 0.6 mag. It's very difficult to determine the 
> period of the signal (given the noise due to the low altitude of 
> the object). A guess, looking at the light curve on screen, 
> yields a value of approx. 0.07 d.
> In Astrophys. J. Sup. 78, 409, 1992, Berg et al. mentioned this 
> object as an emission-line CV, with a "resemblance to HT Cas and 
> U Gem".   The object is located at 14h32m25.88s, -00d33'00".9 
> (J2000), with a reported quiescent magnitude of 18.5
> I'll continue monitoring this object as long as possibe (but 
> already getting very low now). Assistance from other 
> observatories would be appreciated.
> Best regards,
> Tonny

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