HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4532 PERIOD COVERED: UT January 23, 2007 (DOY 023) OBSERVATIONS SCHEDULED NIC1/NIC2 10889 The Nature of the Halos and Thick Disks of Spiral Galaxies We propose to resolve the extra-planar stellar populations of the thick disks and halos of seven nearby, massive, edge-on galaxies using ACS, NICMOS, and WFPC2 in parallel. These observations will provide accurate star counts and color-magnitude dia ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4531 PERIOD COVERED: UT January 22, 2007 (DOY 022) OBSERVATIONS SCHEDULED WFPC2 10798 Dark Halos and Substructure from Arcs & Einstein Rings The surface brightness distribution of extended gravitationally lensed arcs and Einstein rings contains super-resolved information about the lensed object, and, more excitingly, about the smooth and clumpy mass distribution of the lens galaxies. The source an ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT    # 4530 PERIOD COVERED: UT January 18,19,20,21, 2007 (DOY 018,019,020,021) 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 ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4529 PERIOD COVERED: UT January 017, 2008 (DOY 017) OBSERVATIONS SCHEDULED ACS/SBC 11162 Understanding the Long Term Impacts of Low Magnetic Accretion The low accretion rate Polar EF Eri has been in a low state for more than 9 years. Our recent GALEX photometry revealed a source of UV light that is producing more flux than the white dwarf and which is highly modulated on the 81 min orbital period of t ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4528 PERIOD COVERED: UT January 016, 2008 (DOY 016) 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 be ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       # 4527 PERIOD COVERED: UT January 015, 2008 (DOY 015) OBSERVATIONS SCHEDULED WFPC2 11024 WFPC2 CYCLE 15 INTERNAL MONITOR This calibration proposal is the Cycle 15 routine internal monitor for WFPC2, to be run weekly to monitor the health of the cameras. A variety of internal exposures are obtained in order to provide a monitor of the integrity of the CCD camera electronics in both bays {both gain ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4526 PERIOD COVERED: UT January 014, 2008 (DOY 014) OBSERVATIONS SCHEDULED SIGNIFICANT EVENTS: (None) WFPC2 10829 Secular Evolution at the End of the Hubble Sequence The bulgeless disk galaxies at the end of the Hubble Sequence evolve at a glacial pace relative to their more violent, earlier-type cousins. The causes of their internal, or secular evolution are important because secular evolution repre ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4525 PERIOD COVERED: UT January 011, 2008 (DOY 011) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8794 NICMOS Post-SAA calibration - CR Persistence Part 5 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 ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4524 PERIOD COVERED: UT January 010, 2008 (DOY 010) OBSERVATIONS SCHEDULED ACS/SBC 11011 Dissecting An Accretion Disk We will use 5 epochs of CXO and HST imaging to determine the X-ray and UV size of the accretion disk of the lensed quasar RXJ1131--1231 using microlensing. Based on preliminary data, we find that the X-ray source is roughly 1/10 the size of the accretion disk in the rest- frame B-band ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4523 PERIOD COVERED: UT January 009, 2008 (DOY 009) OBSERVATIONS SCHEDULED NIC1/NIC2/NIC3 8794 NICMOS Post-SAA calibration - CR Persistence Part 5 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 ...Continue Reading