HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4790 PERIOD COVERED: 5am February 11 - 5am February 12, 2009 (DOY 042/1000z-043/1000z) OBSERVATIONS SCHEDULED FGS 11706 The Parallax of the Planet Host Star XO-3 We will use HST+FGS to measure the parallax of the transiting planet host star XO-3. The resulting accurate distance measurement will provide the most accurate radius determination to date for this massive extrasolar planet (XO-3b), allowing ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4789 PERIOD COVERED: 5am February 10 - 5am February 11, 2009 (DOY 041/1000z-042/1000z) OBSERVATIONS SCHEDULED WFPC2 11612 Eta Carinae's Continuing Instability and Recovery - the 2009 Event Eta Carinae is the only really observable example of structural recovery from a massive giant eruption, a "supernova imposter' event. Moreover it is the only well-observed star above 100 Msun, and its 5.5-year ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4786 PERIOD COVERED: 5am February 5 - 5am February 6, 2009 (DOY 036/1000z-037/1000z) OBSERVATIONS SCHEDULED FGS 11942 Increasing the Accuracy of HST Astrometry with FGS1R We propose to observe six exoplanetary system host stars and two planetary nebulae central stars with FGS1r. All objects have been previously observed under proposals GO-09233, -09969, -10989, and -11210. These observations will sig ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4785 PERIOD COVERED: 5am February 4 - 5am February 5, 2009 (DOY         035/1000z-036/1000z) OBSERVATIONS SCHEDULED 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 t ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4784 PERIOD COVERED: 5am February 3 - 5am February 4, 2009 (DOY         034/1000z-035/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11579 The Difference Between Neutral- and Ionized-Gas Metal Abundances in Local Star-Forming Galaxies with COS The metallicity of galaxies and its evolution with redshift is of paramount importance for understanding galaxy formation. Abundances in ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT      #4782 PERIOD COVERED: 5am January 30 - 5am February 02, 2009 (DOY            030/1000z-033/1000z) OBSERVATIONS SCHEDULED WFPC2 11966 The Recent Star Formation History of SINGS Galaxies The Spitzer Legacy project SINGS provided a unique view of the current state of s ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4781 PERIOD COVERED: 5am January 29 - 5am January 30, 2009 (DOY 029/1000z-030/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11579 The Difference Between Neutral- and Ionized-Gas Metal Abundances in Local Star-Forming Galaxies with COS The metallicity of galaxies and its evolution with redshift is of paramount importance for understanding galaxy formation. Abundances in the interstellar medium (ISM) are typica ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4780 PERIOD COVERED: 5am January 28 - 5am January 29, 2009 (DOY 029/1000z-030/1000z) OBSERVATIONS SCHEDULED WFPC2 11316 HST Cycle 16 & Pre-SM4 Optical Monitor This is a continuation of the Cycle 15 & pre-SM4 Optical Monitor, 11020. Please see that proposal for a more complete description of the observing strategy. The 6 visits comprising this proposal observe two single standard stars with WF ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science   DAILY REPORT       #4779   PERIOD COVERED: 5am January 27 - 5am January 28, 2009 (DOY                          027/1000z-028/1000z)   OBSERVATIONS SCHEDULED   WFPC2 10877   A Snapshot Survey of the Sites of Recent, Nearby Supernovae   During the past few years ...Continue Reading

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science DAILY REPORT       #4777 PERIOD COVERED: 5am January 23 - 5am January 26, 2009 (DOY         023/1000z-026/1000z) OBSERVATIONS SCHEDULED ACS/SBC 11970 HST Observations of Titan's Escaping Atmosphere in Transit and in Emission We propose UV observations using the ACS/SBC of Titan's extended escaping atmosphere for the Jan/Feb 2009 period of transits of Titan across Saturn. A combination of ab ...Continue Reading