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Daily 3568
HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science
DAILY REPORT # 3568 PERIOD COVERED: DOY 71 OBSERVATIONS SCHEDULED ACS/HRC/WFC 10059 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 9744 HST Imaging of Gravitational Lenses Gravitational lenses offer unique opportunities to study cosmology, dark matter, galactic structure, galaxy evolution and quasar host galaxies. They are also the only sample of galaxies selected based on their mass rather than their luminosity or surface brightness. While gravitational lenses can be discovered with ground-based optical and radio observations, converting them into astrophysical tools requires HST. We will obtain ACS/WFC V and I images and NICMOS H images of 21 new lenses never observed by HST and NICMOS H images of 16 lenses never observed by HST in the IR. As in previous cycles, we request that the data be made public immediately. ACS/WFC 9772 Galaxy Populations at Very Large Cluster Radii: The Outskirts of MS1054-03 at z=0.83 We propose to use the Advanced Camera for Surveys to image four selected fields in the outskirts of the rich, X-ray luminous cluster MS1054-03 at z=0.83. The high-resolution and sensitivity of ACS is required in order to study the properties of the population of galaxies falling into the cluster for the first time. By targeting regions of the cluster well beyond the virial radius, we will: {1} study the transformation of infalling field spirals into cluster early-types using, e.g., the morphology-density relation to large radii and very low local densities; {2} determine the star-formation histories of those field galaxies most recently accreted by the cluster, using accurate colors, morphologies, bulge-to- disk ratios, bulge and disk scale lengths, M/L ratios and line strengths; and {3} measure the frequency of galaxy-galaxy mergers and interactions in the infall region. By combining wide-field HST/ACS data with wide-field multi-object spectroscopy from the Magellan and Keck telescopes, we can test the predictions made by galaxy formation models, study how field spirals become early-type cluster members, and better constrain the formation and evolution of galaxies in both clusters and the field. ACS/WFC/WFPC2 9822 The COSMOS 2-Degree ACS Survey We will undertake a 2 square degree imaging survey {Cosmic Evolution Survey -- COSMOS} with ACS in the I {F814W} band of the VIMOS equatorial field. This wide field survey is essential to understand the interplay between Large Scale Structure {LSS} evolution and the formation of galaxies, dark matter and AGNs and is the one region of parameter space completely unexplored at present by HST. The equatorial field was selected for its accessibility to all ground-based telescopes and low IR background and because it will eventually contain ~100, 000 galaxy spectra from the VLT-VIMOS instrument. The imaging will detect over 2 million objects with I 27 mag {AB, 10 sigma}, over 35, 000 Lyman Break Galaxies {LBGs} and extremely red galaxies out to z ~ 5. COSMOS is the only HST project specifically designed to probe the formation and evolution of structures ranging from galaxies up to Coma-size clusters in the epoch of peak galaxy, AGN, star and cluster formation {z ~0.5 to 3}. The size of the largest structures necessitate the 2 degree field. Our team is committed to the assembly of several public ancillary datasets including the optical spectra, deep XMM and VLA imaging, ground-based optical/IR imaging, UV imaging from GALEX and IR data from SIRTF. Combining the full-spectrum multiwavelength imaging and spectroscopic coverage with ACS sub-kpc resolution, COSMOS will be Hubble's ultimate legacy for understanding the evolution of both the visible and dark universe. 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. NIC3 9999 The COSMOS 2-Degree ACS Survey NICMOS Parallels The COSMOS 2-Degree ACS Survey NICMOS Parallels. This program is a companion to program 9822. NICMOS 8791 NICMOS Post-SAA calibration - CR Persistence Part 2 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. STIS 9786 The Next Generation Spectral Library We propose to continue the Cycle 10 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] lt -1.5}, low {[Fe/H] -1.5 to -0.5}, near-solar {[Fe/H] -0.3 to 0.1}, and super-solar {[Fe/H] gt 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. STIS/CCD 10017 CCD Dark Monitor-Part 1 Monitor the darks for the STIS CCD. STIS/CCD 10019 CCD Bias Monitor - Part 1 Monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at gain = 4, to build up high-S/N superbiases and track the evolution of hot columns. STIS/CCD 10085 STIS Pure Parallel Imaging Program: Cycle 12 This is the default archival pure parallel program for STIS during cycle 12. WFPC2 10070 WFPC2 CYCLE 12 Supplemental Darks Part 2/3 This dark calibration program obtains 3 dark frames every day to provide data for monitoring and characterizing the evolution of hot pixels. WFPC2 10084 WFII parallel archive proposal This is the generic target version of the WFPC2 Archival Pure Parallel program. The program will be used to take parallel images of random areas of the sky, following the recommendations of the 2002 Parallels Working Group. WFPC2 9740 CIII] Imagery of Planetary Nebulae and HII Regions -- A Snap Program We propose to undertake a SNAP program of WFPC2 imagery of several planetary nebulae and extragalactic HII regions with the F185W filter to study the spatial variation of the CIII] 1909 Angstrom emission lines across the nebulae. Much of our current knowledge of carbon abundances in planetary nebulae and HII regions are based on UV spectroscopic observations of this line yet there have not been any studies of its spatial variations in nebulae compared to several of the prominent optical lines {e.g. [OIII] 5007 Angstroms}. Such observations, coupled with photoionization modeling of the nebulae, will enable us to assess the utility of using the CIII] line in abundance calculations of C/O and C/H in nebulae and possibly permit improved empirical emission-line diagnostic techniques for ionization corrections to get the elemental carbon abundances from C++/O++ observations based on CIII]/[OIII] 1909/5007. We also plan to study the spatial variation of the CIII] 1909 Angstrom collisionally excited lines against the CII 4267 Angstrom permitted line in many of the nebulae using previous and planned ground-based longslit echelle spectroscopy coupled with the HST WFPC2 F185W imagery. FLIGHT OPERATIONS SUMMARY: Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) None COMPLETED OPS REQs: None OPS NOTES EXECUTED: None SCHEDULED SUCCESSFUL FAILURE TIMES FGS GSacq 12 12 FGS REacq 06 06 FHST Update 17 17 LOSS of LOCK SIGNIFICANT EVENTS: Loads for SA075O02_F1 were signed off @ 072/0800z. SA075O02 supercedes SA075O01, and includes the additional "Director's Discretionary Target" for proposal # 10041 "Characterization of a Planetary-sized Body in the Inner Oort Cloud". Start CCS "D" and "F" Strings Operations Certification check-out (non-critical commanding), continue through weekend. |
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