[vsnet-alert 15715] Re: Next HST observations: SDSS1538+5123 and DT Oct

[Diego Rodriguez]

Recent

 

OBJECT                          DATE          MAG          

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SDSSJ1538+5123  20130515.922  18.50CV  Diego Rodriguez

 

OBS: Diego Rodríguez

Guadarrama Observatory

TEL: LX200 25-cm f/6.3

CCD: ST9

CAT: USNO A2.0 

 

 

De: Boris Gaensicke [mailto:Boris.Gaensicke at warwick.ac.uk] 
Enviado el: sábado, 11 de mayo de 2013 1:16
Para: Gary Poyner; Roger Pickard; David Boyd; Mike Simonsen; Elizabeth
Waagen; Arne Henden; Arto Oksanen; Bart Staels;
vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp; Stuart P Littlefair;
cba-chat at cbastro.org; Joe Patterson; Fritz Osell
CC: Diego Rodriguez; chonton at yahoo.com; Michael J. Cook
Asunto: Next HST observations: SDSS1538+5123 and DT Oct

 

Dear All, 

this morning's HST observations of 1RXSJ105010.3-140431
went well, and we obtained a textbook ultraviolet spectrum 
of a cool white dwarf, exactly the kind of data we 
were hoping for. Thanks so much for your continued support, 
I can't repeat often enough how vital your monitoring is to
the success of this project! 

... and the next two targets are "locked" into the HST schedule, 

* SDSS1538+5123: May 16, 2013 22:44:06  to May 17, 2013 02:14:05

which I described in one of my last mails: a new CV from SDSS, that
meanders up and down
<http://nesssi.cacr.caltech.edu/catalina/20010321/103211520534100553p.html>
by about a magnitude with no proper
outburst detected so far. Hopefully the HST observations will
shed some more light on the nature of this star. 

* DT Oct: May 23, 2013 23:31:07 to May 24, 2013 02:05:03

a  SU UMa dwarf nova with quite frequent outbursts (~40-60d). 
The last outburst occurred around April 20th
<http://www.aavso.org/lcg/plot?auid=000-BFR-382&lastdays=50&obstotals=yes&ca
lendar=calendar&grid=on&visual=on&uband=on&bband=on&v=on&pointsize=1&width=8
00&height=450> . Given that
the HST observations will occur a bit more than a month
later, this promises to be a bit of a nail-biting experience...

Best wishes, 

Boris

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For more information on this HST program, see

 
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/
http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/Targets.html