[vsnet-alert 15751] Re: Next HST observations: GW Lib

[Michael J. Cook, Newcastle Observatory]

Sampled the program stars (for my latitude) in V-band between JD
438.51667 and 438.62500

GW Lib 16.585
V0482 Cam (HS0728+6738) 15.849
HS
0455+8315 16.619
LN Uma 15.445
V0380 Oph 14.763
QZ Ser 17.407
V1108 Her
16.739 

Posted to WebObs. 

Should be able to sample these targets
again tonight. 

--- 

Michael J.
Cook
http://www.newcastleobservatory.ca

On 2013-05-24 18:16, Boris
Gaensicke wrote: 

> Dear All, 
> 
> thanks to your very detailed
monitoring of DT Oct, the HST observations
> could go ahead, as it was
unambiguous that the system was back
> to quiescence. The HST spectrum
shows that the white dwarf contributes
> at best half of the UV flux,
which may be due to the fact that we observed
> it quite soon after the
outburst - it would be great to get another look at
> it deeper in
quiescence, but this will have to wait for another occasion 
> well into
the future. 
> 
> The next target is an old friend, observed already
three times
> with HST: GW Lib. This is a WZ Sge dwarf nova, first
discovered 
> in outburst in 1983, and initially thought to be a
classical nova. 
> The second outburst was recorded in 2007, and the
upcoming
> HST observations will show if the white dwarf cooled back 
>
to its quiescent temperature, after being heated during the 
> outbutst.
It is extremely unlikely that the star will show any activity, 
> but,
we will need to demonstrate to STScI that this is indeed the case 
> to
have the HST observations being authorised. 
> 
> GW Lib: May 30, 2013
10:30:11 May 30, 2013 15:40:30
> 
> Best wishes, 
> 
> Boris 
> 
>
-----------------------------------------------------------------------------------------------------
>
For more information on this HST program, see
> 
>
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/ [1]
>
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/Targets.html
[2]
 

Links:
------
[1]
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/
[2]
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/Targets.html