Status Report

NASA Hubble Space Telescope Daily Report # 3664

By SpaceRef Editor
August 3, 2004
Filed under , ,

HUBBLE SPACE TELESCOPE – Continuing to collect World Class Science





CCD Daily Monitor

This program consists of basic tests to monitor, the read noise, the
development of hot pixels and test for any source of noise in ACS CCD
detectors. This programme will be executed once a day for the entire
lifetime of ACS.

ACS/WFC 9788

A Narrow-band Snapshot Survey of Nearby Galaxies

We propose to use ACS/WFC to conduct the first comprehensive HST
narrow-band {H-alpha + [N II]} imaging survey of the central regions
of nearby bulge-dominated disk {S0 to Sbc} galaxies. This survey will
cover, at high angular resolution extending over a large field, an
unprecedented number of galaxies representing many different
environments. It will have important applications for many
astrophysical problems of current interest, and it will be an
invaluable addition to the HST legacy. The observations will be
conducted in snapshot mode, drawing targets from a complete sample of
145 galaxies selected from the Palomar spectroscopic survey of nearby
galaxies. Our group will use the data for two primary applications.
First, we will search for nuclear emission-line disks suitable for
future kinematic measurements with STIS, in order to better constrain
the recently discovered relations between black hole mass and bulge
properties. Preliminary imaging of the type proposed here must be
done, sooner or later, if we are to make progress in this exciting new
field. Second, we will investigate a number of issues related to
extragalactic star formation. Specifically, we will systematically
characterize the properties of H II regions and super star clusters on
all galactic scales, from circumnuclear regions to the large-scale

FGS 10103

FGS Astrometry of a Star Hosting an Extrasolar Planet: The Mass of
Upsilon Andromedae d

We propose observations with HST/FGS to determine the astrometric
elements {perturbation orbit semimajor axis and inclination} produced
by the outermost extra-solar planet orbiting the F8V star Upsilon
Andromedae. These observations will permit us to determine the actual
mass of the planet by providing the presently unknown sin i factor
intrinsic to the radial velocity method which discovered this object.
An inclination, i = 30degrees, within the range of one very low
precision determination using reanalyzed HIPPARCOS intermediate data
products, would produce the observed radial velocity amplitude, K = 66
ms with a companion mass of ~8 M_Jupiter. Such a mass would induce in
Upsilon Andromedae a perturbation semi-major axis, Alpha = 0arcs0012,
easily within the reach of HST/FGS fringe tracking astrometry. The
proposed observations will yield a planetary mass, rather than, as
previous investigations have done, only suggest a planetary mass

NIC1/NIC2/NIC3 8793

NICMOS Post-SAA calibration – CR Persistence Part 4

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 DARKSs. 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.

NIC2 9856

A near-IR imaging survey of submm galaxies with spectroscopic redshifts

Submillimeter {submm} surveys with SCUBA have identified a population
of obscured star-forming and active galaxies at high redshift. Our
recent spectroscopic campaigns with the Keck-10m telescope have
uncovered redshifts for 37 SCUBA galaxies. The wide redshift range of
the radio identified submm population {z=1-4} implies that many
varieties of sources driven by different physical processes may be
selected in a submm survey. We propose to use HST-NICMOS, ACS to
obtain 2-filter images of a sample of 15 SCUBA galaxies with redshifts
spanning z=0.8-3.5. Our goal is to understand what physical process
{major mergers?} drive their strong evolution and great luminosities,
and what the implications are for galaxy evolution models.

STIS/CCD 10018

CCD Dark Monitor-Part 2

Monitor the darks for the STIS CCD.

STIS/CCD 10020

CCD Bias Monitor – Part 2

Monitor the bias in the 1×1, 1×2, 2×1, and 2×2 bin settings at gain=1,
and 1×1 at gain = 4, to build up high-S/N superbiases and track the
evolution of hot columns.

STIS/CCD 10222

The Next Generation Spectral Library

We propose to complete our snapshot program to produce a Next
Generation Spectral Library of 600 stars for use in modeling the
integrated light of galaxies and clusters. This program is using the
low dispersion UV and optical gratings of STIS. The library will be
roughly equally divided among four metallicities, very low {[Fe/H] <
-1.5}, low {-1.5 < [Fe/H] < -0.5}, near-solar {-0.3 < [Fe/H] < 0.1},
and super-solar {[Fe/H] > 0.2}, well-sampling the entire HR-diagram in
each bin. Such a library will surpass all extant compilations and have
lasting archival value, well into the Next Generation Space Telescope
era. Because of the universal utility and community-broad nature of
this venture, we waive the entire proprietary period.


Boron in stars of same O and Li, but different Be: testing cosmic-ray
vs. neutrino spallation

We propose to further investigate the origin of the light elements Li,
Be, and B, by observing B in a group of galactic stars found to have
similar O abundances but to differ significantly in their Be content.
Contrary to Li, which is produced in the Big Bang and its abundance in
halo stars constrains primordial nucleosynthesis and the baryonic
density, Be and B are produced later by cosmic ray spallation as the
galactic halo forms. Knowledge of their evolution is now being used
along with that of [O/H] {and [Fe/H]} as a powerful discriminant
between different models of the chemical and dynamical evolution of
the galaxy. Light element abundances can be used to test these
theories only if they have not been altered by destruction in stars.
Recently we have identified a small number of stars characterized by
the same O abundance but large differences in their Be content, which
cannot be accounted for by stellar depletion {since their Li is
undepleted}. As neutrino-spallation contributes only to the production
of isotope 11 of B, and not to Be, Be and B abundances in the same
stars will allow us to see if B scales with Be {evidence for a CR
spallation origin} or with O {evidence for contribution from neutrino

WFPC2 10071

WFPC2 CYCLE 12 Supplemental Darks Part 3/3

This dark calibration program obtains 3 dark frames every day to
provide data for monitoring and characterizing the evolution of hot


Significant Spacecraft Anomalies: (The following are preliminary
reports of potential non-nominal performance that will be

HSTAR 9492: OTA SE review of trending data revealed GS Acquisition
(2,1,2) @ 203/22:56:06Z failed to FL backup on FGS 1 due to SSLE on
FGS 2. Under investigation.

HSTAR 9493: OTA SE review of trending data revealed GS Acquisition
(2,1,2) @ 203/22:56:06Z suffered LOL. FGS 1 and 3 returned to SSM
after entering FL. Second attempt to acquire GS was ultimately
successful. Under investigation.

HSTAR 9494: OTA Se review of trending data revealed GS Acquisition
(3,1,1) @ 204/10:02:09Z suffered LOL. FGS 1 and 3 returned to SSM
after entering FL. Second attempt to acquire GS was ultimately
successful. Under investigation.


  • 17233-0 Genslew for proposal 10228 – slot 5 @ 211/1513z
  • 17234-0 Genslew for proposal 10228 – slot 6 @ 211/1515z
  • 17235-0 Genslew for proposal 10288 – slot 7 @ 211/1517z
  • 17236-0 Genslew for proposal 9862 – slot 8 @ 211/1533z
  • 17237-0 Genslew for proposal 9862 – slot 9 @ 211/1535z


  • 0900-1 COMMAND PROBLEM @ 211/12:37:29z
  • 0900-1 COMMAND PROBLEM @ 212/08:25:43z

                          SCHEDULED     SUCCESSFUL    FAILURE TIMES
FGS GSacq               11                       11
FGS REacq               05                        05
FHST Update             18                        18
(02)                                                203/22:56:06z, 


SpaceRef staff editor.