[vsnet-alert 15152] Next HST observations: SDSS0755+1435 & HS0218+3229

[Boris Gaensicke]

Dear All,

the next two HST targets are

SDSS0755+1435: Dec 13, 2012 23:32:57 to Dec 14, 2012 04:45:44

and

HS0218+3229: Dec 22, 2012 06:07:48 to Dec 22, 2012 10:17:53

These two systems are extreme opposites: SDSS0755+1435
is a WZ Sge candidate near the period minimum, and HS0218+3229
has a long period of 7.13h, and an evolved donor.  Both have
very rare outbursts (in fact, I am not aware of any detected
outburst, but please correct me if I'm wrong). Nevertheless,
we need to have a close eye on those two now.

Please start close monitoring of SDSS0755+1435 now until Friday,
the go/no-go decision will most likely happen on Thursday morning,
EST. Once that one is done, it will be time to move on to
HS0218+3229.

After that, there will be a short break over Christmas & new year.

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