HUBBLE
SPACE TELESCOPE - Continuing to collect World Class Science
DAILY
REPORT # 4524
PERIOD
COVERED: UT January 010, 2008 (DOY 010)
OBSERVATIONS
SCHEDULED
ACS/SBC
11011
Dissecting
An Accretion Disk
We will
use 5 epochs of CXO and HST imaging to determine the X-ray and
UV
size of the accretion disk of the lensed quasar RXJ1131--1231 using
microlensing.
Based on preliminary data, we find that the X-ray source
is
roughly 1/10 the size of the accretion disk in the rest- frame
B-band.
The new observations will significantly reduce the uncertainties
in
this estimate, provide a comparison between the size of the X-ray
source
and the size of the accretion disk in the rest frame ultraviolet,
and
have the signal-to-noise ratio necessary to begin examining the size
of
the hard and soft-band X-ray emission regions separately. The results
will
quantitatively test accretion disk theory and X-ray emission
mechanisms.
NIC1/NIC2/NIC3
8794
NICMOS
Post-SAA calibration - CR Persistence Part 5
A
new procedure proposed to alleviate the CR-persistence problem of
NICMOS.
Dark frames will be obtained immediately upon exiting the SAA
contour
23, and every time a NICMOS exposure is scheduled within 50
minutes
of coming out of the SAA. The darks will be obtained in parallel
in
all three NICMOS Cameras. The POST-SAA darks will be non-standard
reference
files available to users with a USEAFTER date/time mark. The
keyword
'USEAFTER=date/time' will also be added to the header of each
POST-SAA
DARK frame. The keyword must be populated with the time, in
addition
to the date, because HST crosses the SAA ~8 times per day so
each
POST-SAA DARK will need to have the appropriate time specified, for
users
to identify the ones they need. Both the raw and processed images
will
be archived as POST-SAA DARKs. Generally we expect that all NICMOS
science/calibration
observations started within 50 minutes of leaving an
SAA
will need such maps to remove the CR persistence from the science
images.
Each observation will need its own CRMAP, as different SAA
passages
leave different imprints on the NICMOS detectors.
NIC1/NIC3
10924
Constraints
on the Assembly and Dynamical Masses of z~2 Galaxies
We
propose deep NICMOS/NIC2 F160W imaging of seven star-forming galaxies
at
z~2. These galaxies comprise an entirely unique sample, with not only
redshifts
measured from optical and near-IR spectra, but also
SINFONI/VLT
near-IR integral field spectroscopic measurements providing
kinematic
maps of H-alpha emission out to radii of >=10 kpc. We aim to
determine
the dynamical masses and evolutionary states of these systems,
as
part of the larger goal of understanding how mass is assembled in
distant
galaxies. In order to interpret our novel H-alpha integral field
maps
in terms of mass, we require detailed knowledge of the structural
parameters
of our target objects at rest-frame optical wavelengths and
on
~1 kpc scales. We want to establish if the mass is distributed in a
disk,
bulge, or merging sub-units, and if we can detect tidal features
associated
with a merger. F160W imaging with NICMOS/NIC2 provides the
perfect
combination of sensitivity and resolution to address these
questions,
and arrive at the fundamental quantity: the dynamical mass.
NIC2
11142
Revealing
the Physical Nature of Infrared Luminous Galaxies at 0.3
We
aim to determine physical properties of IR luminous galaxies at
0.3<z<2.7
by requesting coordinated HST/NIC2 and MIPS 70um observations
of
a unique, 24um flux-limited sample with complete Spitzer mid-IR
spectroscopy.
The 150 sources investigated in this program have S{24um}
>
0.8mJy and their mid-IR spectra have already provided the majority
targets
with spectroscopic redshifts {0.3<z<2.7}. The proposed
150~orbits
of NIC2 and 66~hours of MIPS 70um will provide the physical
measurements
of the light distribution at the rest-frame ~8000A and
better
estimates of the bolometric luminosity. Combining these
parameters
together with the rich suite of spectral diagnostics from the
mid-IR
spectra, we will {1} measure how common mergers are among LIRGs
and
ULIRGs at 0.3<z<2.7, and establish if major mergers are the drivers
of
z>1 ULIRGs, as in the local Universe. {2} study the co-evolution of
star
formation and blackhole accretion by investigating the relations
between
the fraction of starburst/AGN measured from mid-IR spectra vs.
HST
morphologies, L{bol} and z. {3} obtain the current best estimates of
the
far-IR emission, thus L{bol} for this sample, and establish if the
relative
contribution of mid-to-far IR dust emission is correlated with
morphology
{resolved vs. unresolved}.
WEPC2
11196
An
Ultraviolet Survey of Luminous Infrared Galaxies in the Local
Universe
At luminosities
above 10^11.4 L_sun, the space density of far-infrared
selected
galaxies exceeds that of optically selected galaxies. These
Luminous
Infrared Galaxies {LIRGs} are primarily interacting or merging
disk
galaxies undergoing starbursts and creating/fueling central AGN. We
propose
far {ACS/SBC/F140LP} and near {WFPC2/PC/F218W} UV imaging of a
sample
of 27 galaxies drawn from the complete IRAS Revised Bright Galaxy
Sample
{RBGS} LIRGs sample and known, from our Cycle 14 B and I-band ACS
imaging
observations, to have significant numbers of bright {23 < B < 21
mag}
star clusters in the central 30 arcsec. The HST UV data will be
combined
with previously obtained HST, Spitzer, and GALEX images to {i}
calculate
the ages of the clusters as function of merger stage, {ii}
measure
the amount of UV light in massive star clusters relative to
diffuse
regions of star formation, {iii} assess the feasibility of using
the
UV slope to predict the far-IR luminosity {and thus the star
formation
rate} both among and within IR-luminous galaxies, and {iv}
provide
a much needed catalog of rest- frame UV morphologies for
comparison
with rest-frame UV images of high-z LIRGs and Lyman Break
Galaxies.
These observations will achieve the resolution required to
perform
both detailed photometry of compact structures and spatial
correlations
between UV and redder wavelengths for a physical
interpretation
our IRX-Beta results. The HST UV data, combined with the
HST
ACS, Spitzer, Chandra, and GALEX observations of this sample, will
result
in the most comprehensive study of luminous starburst galaxies to
date.
FLIGHT
OPERATIONS SUMMARY:
Significant
Spacecraft Anomalies: (The following are preliminary reports
of
potential non-nominal performance that will be investigated.)
HSTARS:
11137
- REAcq (1,2,1) failed to RGA Hold
At 010/11:15:55 REAcq (1,2,1) scheduled from 010/10:36:39 -
10:44:03 had
failed to RGA Hold due to QSTOP and QF2STOPF flags on FGS 2.
Pre-acquisition OBAD #1 & #2 unavailable due to LOS. OBAD MAP
RSS value
= 12.82 a-s.
11139
- GSacq(1,3,1) fails to RGA control
GSacq(1,3,1) scheduled at 010/16:16:39 failed to RGA control. 486
ESB
message "A07" ("FGS Coarse Track failed - Time out
waiting for Data
Valid") was received. No FGS flags were seen. OBAD prior to
GSACQ at
16:09:46 had RSS error of 7.85 arcseconds
REacq(1,3,1) at 17:52:31 also failed with another "A07"
ESB and no FGS
flags. OBAD at 17:45:40 had RSS error of 16.55 arc seconds.
REacq(1,3,1) at 19:29:05 also failed. There were no flags and a
A07 was
received. OBAD at 19:21:34 had RSS error of 14.82 arc seconds.
REacq(1,3,1) at 21:04:57 also failed with no flags. ESB A07 was
received. OBAD at 20:57:28 had RSS error of 1.48 arc seconds.
COMPLETED
OPS REQUEST: (None)
COMPLETED
OPS NOTES: (None)
SCHEDULED
SUCCESSFUL
FGS
GSacq
08
07
FGS
REacq
06
02
OBAD
with Maneuver
28
28
SIGNIFICANT
EVENTS: (None)