HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4636 PERIOD COVERED: 5am June 19 - 5am June 20, 2008 (DOY 171/0900z-172/0900z) OBSERVATIONS SCHEDULED ACS/SBC 11215 New Sightlines for the Study of Intergalactic Helium: Dozens of High-Confidence, UV-Bright Quasars from SDSS/GALEX The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed study of HeII Lyman-alpha absorption toward a handful of QSOs at 2.7<z<3. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4635 PERIOD COVERED: 5am June 18 - 5am June 19, 2008 (DOY 170/0900z-171/0900z) OBSERVATIONS SCHEDULED ACS/SBC 11158 HST Imaging of UV emission in Quiescent Early-type Galaxies We have constructed a sample of early type galaxies at z~0.1 that have blue UV-optical colors, yet also show no signs of optical emission, or extended blue light. We have cross-correlated the SDSS catalog and the Galaxy Evolutio ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4634 PERIOD COVERED: 5am June 17 - 5am June 18, 2008 (DOY 169/0900z-170/0900z) OBSERVATIONS SCHEDULED ACS/SBC 11225 The Wavelength Dependence of Accretion Disk Structure We can now routinely measure the size of quasar accretion disks using gravitational microlensing of lensed quasars. The next step to testing accretion disk models is to measure the size of accretion disks as a function of wavele ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4633 PERIOD COVERED: 5am June 16 - 5am June 17, 2008 (DOY 168/0900z-169/0900z) OBSERVATIONS SCHEDULED NIC2 10487 A Search for Debris Disks in the Coeval Beta Pictoris Moving Group Resolved observations of debris disks present us with the opportunity of studying planetary evolution in other solar systems. We propose to search for debris disks in the Beta Pictoris moving group {8-20 Myrs, 10-50 pc ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4632 PERIOD COVERED: 5am June 13 - 5am June 16, 2008 (DOY 165/0900z-168/0900z) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8795 NICMOS Post-SAA Calibration - CR Persistence Part 6 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 ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4631 PERIOD COVERED: 5am June 12 - 5am June 13, 2008 (DOY 164/0900z-165/0900z) OBSERVATIONS SCHEDULED FGS 11213 Distances to Eclipsing M Dwarf Binaries We propose HST FGS observations to measure accurate distances of 5 nearby M dwarf eclipsing binary systems, from which model-independent luminosities can be calculated. These objects have either poor or no existing parallax measurements. FGS paral ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4630 PERIOD COVERED: 5am June 11 - 5am June 12, 2008 (DOY 163/0900z-164/0900z) OBSERVATIONS SCHEDULED ACS/SBC 11110 Searching for Lyman Alpha Emission from FUSE Lyman Continuum Candidates We have recently been granted time on FUSE to characterize the escape fraction of hydrogen Lyman continuum (Lyc) photons from a morphologically diverse set of star forming galaxies. The FUSE program is designed to pr ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4629 PERIOD COVERED: 5am June 10 - 5am June 11, 2008 (DOY 162/0900z-163/0900z) OBSERVATIONS SCHEDULED NIC1/NIC2 11155 Dust Grain Evolution in Herbig Ae Stars: NICMOS Coronagraphic Imaging and Polarimetry We propose to take advantage of the sensitive coronagraphic capabilities of NICMOS to obtain multiwavelength coronagraphic imaging and polarimetry of primordial dust disks around young intermediate-ma ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4628 PERIOD COVERED: 5am June 09 - 5am June 10, 2008 (DOY161/0900z-162/0900z) OBSERVATIONS SCHEDULED WFPC2 10583 Resolving the LMC Microlensing Puzzle: Where Are the Lensing Objects? We are requesting 32 HST orbits to help ascertain the nature of the population that gives rise to the observed set of microlensing events towards the LMC. The SuperMACHO project is an ongoing ground-based survey on the CT ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4626 PERIOD COVERED: 5am June 05 - 5am June 06, 2008 (DOY 157/0900z-158/0900z) OBSERVATIONS SCHEDULED WFPC2 10583 Resolving the LMC Microlensing Puzzle: Where Are the Lensing Objects ? We are requesting 32 HST orbits to help ascertain the nature of the population that gives rise to the observed set of microlensing events towards the LMC. The SuperMACHO project is an ongoing ground-based survey on the ...Continue Reading