HUBBLE SPACE TELESCOPE - Continuing to collect World Class
Science
DAILY REPORT #4790
PERIOD COVERED: 5am February 11 - 5am February 12, 2009
(DOY
042/1000z-043/1000z)
OBSERVATIONS SCHEDULED
FGS 11706
The Parallax of the Planet Host Star XO-3
We will use HST+FGS to measure the parallax of the
transiting planet
host star XO-3. The resulting accurate distance
measurement will provide
the most accurate radius determination to date for this
massive
extrasolar planet (XO-3b), allowing us to critically test
current giant
extrasolar planet structure models. These observations
will also
constrain the amount of heating that may be produced
inside XO-3b by
tides raised on the planet as it moves through its 3.2 d
eccentric (e ~
0.22) orbit.
WFPC2 11967
WFPC2 Imaging of the Lockman Hole
In order to understand galaxy evolution and constrain
theoretical
models, we require both multiwavelength photometry (to
robustly
determine physical parameters such as star formation rates
and stellar
masses) and detailed morphological information. Galaxy
morphology
encodes crucial information about galaxy formation history
and the
physical processes that trigger star formation and AGN
activity, and
high-resolution imaging for large samples of galaxies is
currently only
obtainable with HST. The Lockman Hole has been the target
of extensive
multi-wavelength observations from the X-ray to the radio,
and will be
the target of the deepest wide-area blankfield thermal IR
observations
with Herschel, but currently lacks comprehensive HST
imaging. We propose
to obtain WFPC2 imaging of ~500 arcmin2 of the central region
of the
Lockman Hole in F606W and F814W, to a depth of V606~26.8
and I814~26.
This imaging is crucial in order to characterize the
sources detected at
other wavelengths.
FLIGHT OPERATIONS SUMMARY:
Significant Spacecraft Anomalies: (The following are
preliminary reports
of potential non-nominal performance that will be
investigated.)
HSTARS: (None)
COMPLETED OPS REQUEST: (None)
COMPLETED OPS NOTES: (None)
SCHEDULED
SUCCESSFUL
FGS
GSacq 06
06
FGS
REacq
08
08
OBAD with Maneuver
28
28
SIGNIFICANT EVENTS: (None)