HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4506 PERIOD COVERED: UT December 12, 2007 (DOY 346) OBSERVATIONS SCHEDULED ACS/SBC 11309 Chemical Composition of an Exo-Neptune The recent discovery that the Neptune-like exoplanet GJ 436 b transits its host star has presented us the first chance to observationally study ice giant formation beyond our solar system {Gillon et al. 2007}. Using Directors Discretionary time, we propose to obtain a high-pr ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4505 PERIOD COVERED: UT December 11, 2007 (DOY 345) OBSERVATIONS SCHEDULED WFPC2 10877 A Snapshot Survey of the Sites of Recent, Nearby Supernovae During the past few years, robotic {or nearly robotic} searches for supernovae {SNe}, most notably our Lick Observatory Supernova Search {LOSS}, have found hundreds of SNe, many of them in quite nearby galaxies {cz < 4000 km/s}. Most of the objects were ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4504 PERIOD COVERED: UT December 10, 2007 (DOY 344) OBSERVATIONS SCHEDULED SIGNIFICANT EVENTS: (None) ACS/SBC WFPC2 11175 UV Imaging to Determine the Location of Residual Star Formation in Galaxies Recently Arrived on the Red Sequence We have identified a sample of low-redshift {z = 0.04 - 0.10} galaxies that are candidates for recent arrival on the red sequence. They have red optical colors indicati ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT    # 4503 PERIOD COVERED: UT December 7, 8 & 9, 2007 (DOY 341,342,343) 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      # 4502 PERIOD COVERED: UT December 7, 2007 (DOY 341) OBSERVATIONS SCHEDULED WFPC2 10787 Modes of Star Formation and Nuclear Activity in an Early Universe Laboratory Nearby compact galaxy groups are uniquely suited to exploring the mechanisms of star formation amid repeated and ongoing gravitational encounters, conditions similar to those of the high redshift universe. These dense groups host a variety ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4501 PERIOD COVERED: UT December 6, 2007 (DOY 340) OBSERVATIONS SCHEDULED FGS 11211 An Astrometric Calibration of Population II Distance Indicators In 2002 HST produced a highly precise parallax for RR Lyrae. That measurement resulted in an absolute magnitude, M{V}= 0.61+/-0.11, a useful result, judged by the over ten refereed citations each year since. It is, however, unsatisfactory to have the dire ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4500 PERIOD COVERED: UT December 5, 2007 (DOY 339) OBSERVATIONS SCHEDULED ACS/SBC 10907 New Sightlines for the Study of Intergalactic Helium: A Dozen High-Confidence, UV-Bright Quasars from SDSS/GALEX The reionization of intergalactic helium is thought to have occurred between redshifts of about 3 and 4. Detailed study of HeII Lyman-alpha absorption toward a handful quasars at 2.7<z<3.3 demonst ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      # 4499 PERIOD COVERED: UT December 4, 2007 (DOY 338) OBSERVATIONS SCHEDULED ACS/SBC 10907 New Sightlines for the Study of Intergalactic Helium: A Dozen High-Confidence, UV-Bright Quasars from SDSS/GALEX The reionization of intergalactic helium is thought to have occurred between redshifts of about 3 and 4. Detailed study of HeII Lyman-alpha absorption toward a handful quasars at 2.7<z<3.3 demonst ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science   DAILY REPORT      # 4498   PERIOD COVERED: UT November 30 December 1, 2, 2007 (DOY 334,335,336)   OBSERVATIONS SCHEDULED   NIC1/NIC2/NIC3 8794   NICMOS Post-SAA calibration - CR Persistence Part 5 A new procedure proposed to alleviate the CR-persistence problem ofNICMOS. Dark frames will be obtained immediately upon exiting the SAAcontour 23, and every time a NICMOS exposure is scheduled wit ...Continue Reading

Cooper, Joe would like to recall the message, "Daily Report #4498 Correction Notice". ...Continue Reading