HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4807 PERIOD COVERED: 5am March 9 - 5am March 10, 2009 (DOY 068/1000z-069/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2.7<z& ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4806 PERIOD COVERED: 5am March 6 - 5am March 9, 2009 (DOY 065/1000z-068/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11984 Observing Saturn's High Latitude Polar Auroras Planetary auroral emissions are critical indicators of how the magnetospheres of the planets work. Recently, a new component of Saturn's auroral emissions, i.e. high latitude auroras inside the main auroral oval, have been observed by the C ...Continue Reading

Cooper, Joe would like to recall the message, "DR #4806 for review". ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4806 PERIOD COVERED: 5am March 6 - 5am March 9, 2009 (DOY                          065/1000z-068/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11984 Observing Saturn's High Latitude Polar Auroras Planetary auroral emissions are critical indicators of how the magnetospheres of the planets work. Recently ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4804 PERIOD COVERED: 5am March 4 - 5am March 5, 2009 (DOY 063/1000z-064/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2.7<z&l ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4803 PERIOD COVERED: 5am March 3 - 5am March 4, 2009 (DOY 062/1000z-063/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11980 Deep FUV Imaging of Cooling Flow Clusters We propose to take deep ACS FUV images of a carefully selected sample of 19 bright central galaxies in nearby galaxy clusters. This program is the last critical element of a comprehensive investigation of the impact of stellar and AGN feedback o ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4802 PERIOD COVERED: 5am March 2 - 5am March 3, 2009 (DOY         061/1000z-062/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11980 Deep FUV Imaging of Cooling Flow Clusters We propose to take deep ACS FUV images of a carefully selected sample of 19 bright central galaxies in nearby galaxy clusters. This program is the last critical element of a comprehensive investigation of the ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4801 PERIOD COVERED: 5am February 27 - 5am March 2, 2009 (DOY        058/1000z-061/1000z) OBSERVATIONS SCHEDULED WFPC2 11986 Completing HST's Local Volume Legacy Nearby galaxies offer one of the few laboratories within which stellar populations can be tied to multi-wavelength observations. They are thus essential for calibrating and interpreting key astrophysical observa ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4800 PERIOD COVERED: 5am February 26 - 5am February 27, 2009 (DOY 057/1000z-058/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11982 Spanning the Reionization History of IGM Helium: a Large and Efficient HST Spectral Survey of Far-UV-Bright Quasars The reionization of IGM helium is thought to have occurred at redshifts of z=3 to 4. Detailed studies of HeII Lyman-alpha absorption toward a handful of QSOs at 2. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4799 PERIOD COVERED: 5am February 25 - 5am February 26, 2009 (DOY 056/1000z-057/1000z) OBSERVATIONS SCHEDULED FGS 11943 Binaries at the Extremes of the H-R Diagram We propose to use HST/Fine Guidance Sensor 1r to survey for binaries among some of the most massive, least massive, and oldest stars in our part of the Galaxy. FGS allows us to spatially resolve binary systems that are too faint for ground- ...Continue Reading