HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4603 PERIOD COVERED: 5am May 02 - 5am May 05, 2008 (DOY 123/0900z - 126/0900z)   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 ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4602 PERIOD COVERED: 5am May 01 - 5am May 02, 2008 (DOY 122/0900z - 123/0900z)  OBSERVATIONS SCHEDULED ACS/SBC 11200 An Ultraluminous EUV Source? Ultraluminous X-ray sources (ULXs) are bright, irregularly variable, non-nuclear, X- ray sources with apparent luminosities exceeding the Eddington limit for stellar- mass black holes. There is great interest in ULXs because they may represent a n ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4600 PERIOD COVERED: UT April 29, 2008 (DOY 120) OBSERVATIONS SCHEDULED FGS 11210 The Architecture of Exoplanetary Systems Are all planetary systems coplanar? Concordance cosmogony makes that prediction. It is, however, a prediction of extrasolar planetary system architecture as yet untested by direct observation for main sequence stars other than the Sun. To provide such a test, we propose to carry ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4599 PERIOD COVERED: UT April 28, 2008 (DOY 119) OBSERVATIONS SCHEDULED SIGNIFICANT EVENTS: (None) FGS 11212 Filling the Period Gap for Massive Binaries The current census of binaries among the massive O-type stars is seriously incomplete for systems in the period range from years to millennia because the radial velocity variations are too small and the angular separations too close for easy detectio ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4598 PERIOD COVERED: UT April 25,26,27, 2008 (DOY 116,117,118) 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 the SAA. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4596 PERIOD COVERED: UT April 23, 2008 (DOY 114) 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 the SAA. The darks will ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4595 PERIOD COVERED: UT April 22, 2008 (DOY 113) OBSERVATIONS SCHEDULED ACS/SBC 11131 Star formation at large radii in cooling flow brightest cluster galaxies We propose to take deep ACS FUV images of the bright central galaxies in two powerful cooling flow clusters for which we have VLT UBR images, with the object of determining whether the UV excesses we observe at large radii (>15kpc) are caused ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4549 PERIOD COVERED: UT April 21, 2008 (DOY 112) OBSERVATIONS SCHEDULED ACS/SBC 11151 Evaluating the Role of Photoevaporation of Protoplanetary Disk Dispersal Emission produced by accretion onto the central star leads to photoevaporation, which may play a fundamental role in disk dispersal. Models of disk photoevaporation by the central star are challenged by two potential problems: the emission ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4593 PERIOD COVERED: UT April 18,19,20, 2008 (DOY 109,110,111) 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 the SAA. ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4592 PERIOD COVERED: UT April 17, 2008 (DOY 108) OBSERVATIONS SCHEDULED FGS 11210 The Architecture of Exoplanetary Systems Are all planetary systems coplanar? Concordance cosmogony makes that prediction. It is, however, a prediction of extrasolar planetary system architecture as yet untested by direct observation for main sequence stars other than the Sun. To provide such a test, we propose to c ...Continue Reading