| Program Number | Principal Investigator | Program Title |
|---|---|---|
| 12038 | James C. Green, University of Colorado at Boulder | COS-GTO: COOL, WARM AND HOT GAS IN THE COSMIC WEB AND IN GALAXY HALOS Part 2 |
| 12107 | Julianne Dalcanton, University of Washington | A Panchromatic Hubble Andromeda Treasury - I |
| 12110 | Julianne Dalcanton, University of Washington | A Panchromatic Hubble Andromeda Treasury - I |
| 12112 | Julianne Dalcanton, University of Washington | A Panchromatic Hubble Andromeda Treasury - I |
| 12116 | Julianne Dalcanton, University of Washington | A Panchromatic Hubble Andromeda and Triangulum Survey - Globular Cluster Sequence Calibrations |
| 12360 | Saul Perlmutter, University of California - Berkeley | Cosmology From Cluster-Hosted and z>1 Supernovae Orphaned from the MCT Program |
| 12459 | Marc Postman, Space Telescope Science Institute | Through a Lens, Darkly - New Constraints on the Fundamental Components of the Cosmos |
| 12461 | Adam Riess, The Johns Hopkins University | Supernova Follow-up for MCT |
| 12464 | Kevin France, University of Colorado at Boulder | Project MUSCLES: Measuring the Ultraviolet Spectral Characteristics in Low-mass Exoplanetary Systems |
| 12470 | Kim-Vy Tran, Texas A & M Research Foundation | Super-Group 1120-1202: A Unique Laboratory for Tracing Galaxy Evolution in an Assembling Cluster at z=0.37 |
| 12471 | Dawn K. Erb, University of Wisconsin - Milwaukee | The Bottom of the Iceberg: Faint z~2 Galaxies and the Enrichment of the IGM |
| 12473 | David Kent Sing, University of Exeter | An Optical Transmission Spectral Survey of hot-Jupiter Exoplanetary Atmospheres |
| 12477 | Fredrick W. High, University of Chicago | Weak lensing masses of the highest redshift galaxy clusters from the South Pole Telescope SZ survey |
| 12486 | David V. Bowen, Princeton University | QSO Absorption Line Systems from Dwarf Galaxies |
| 12488 | Mattia Negrello, Open University | SNAPshot observations of gravitational lens systems discovered via wide-field Herschel imaging |
| 12504 | Michael C. Liu, University of Hawaii | Bridging the Brown Dwarf/Jupiter Temperature Gap with a Very Cold Brown Dwarf |
| 12512 | Alycia J. Weinberger, Carnegie Institution of Washington | Debris Disk Chemistry from Spatially Resolved Spectroscopy |
| 12514 | Karl Stapelfeldt, NASA Goddard Space Flight Center | Imaging of Newly-identified Edge-on Protoplanetary Disks in Nearby Star-Forming Regions |
| 12517 | Francesco R. Ferraro, Universita di Bologna | COSMIC-LAB: Hunting for optical companions to binary MSPs in Globular Clusters |
| 12519 | Raghvendra Sahai, Jet Propulsion Laboratory | Newly Discovered LMC Preplanetary Nebulae as Probes of Stellar Evolution |
| 12568 | Matthew A. Malkan, University of California - Los Angeles | WFC3 Infrared Spectroscopic Parallel Survey WISP: A Survey of Star Formation Across Cosmic Time |
| 12572 | Michele Trenti, University of Cambridge | The Brightest of Reionizing Galaxies Pure Parallel Survey |
| 12581 | Julia Christine Roman-Duval, Space Telescope Science Institute - ESA | A Direct CO/H2 Abundance Measurement in Diffuse and Translucent LMC and SMC Molecular Clouds |
| 12586 | Kailash C. Sahu, Space Telescope Science Institute | Detecting and Measuring the Masses of Isolated Black Holes and Neutron Stars through Astrometric Microlensing |
| 12587 | Miriam Garcia, Instituto de Astrofisica de Canarias | Winds of very low metallicity OB stars: crossing the frontier of the Magellanic Clouds |
| 12604 | Andrew J. Fox, Space Telescope Science Institute - ESA | Ionization in the Magellanic Stream: A Case Study of Galactic Accretion |
| 12659 | Joaquin Vieira, California Institute of Technology | Strongly Lensed Dusty Star Forming Galaxies: Probing the Physics of Massive Galaxy Formation |
GO 12459: Through a Lens, Darkly - New Constraints on the Fundamental Components of the Cosmos
The cluster MACS J1206.2-0.47, imaged by HST as part of the CLASH program |
The overwhelming majority of galaxies in the universe are found in clusters. As such, these systems offer an important means of tracing the development of large-scale structure through the history of the universe. Moreover, as intense concentrations of mass, galaxy clusters provide highly efficient gravitational lenses, capable of concentrating and magnifying light from background high redshift galaxies to allow detailed spectropic investigations of star formation in the early universe. Hubble imaging has already revealed lensed arcs and detailed sub-structure within a handful of rich clusters. At the same time, the lensing characteristics provide information on the mass distribution within the lensing cluster. The present program aims to capitalise fully on HST's imaging capabilities, utilising the refurbished Advanced Camera for Surveys and the newly-installed Wide-Field Camera 3 to obtain 17-colour imaging of 25 rich clusters. The data will be use to map the mass profiles of the clusters and probe the characteristics of the high-redshift lensed galaxies. Since ACS and WFC3 can be operated in parallel, the program will also use parallel imaging in offset fields to search for high-redshift supernovae. The present observations target the cluster MACS0416-2403 at z=0.42. |
GO 12471: The Bottom of the Iceberg: Faint z~2 Galaxies and the Enrichment of the IGM
WFC3 grism imaging of a section of the GOODS-North field |
Observations with the Hubble telescope have impacted many science areas, but probably none more so than investigations of galaxy formation and evolution in the high redshift universe. Deep field images, starting with the oroginal HDF and progressing through the HDF-South, GOODS-North and South, the Ultra-Deep Field and the infrared UDF, have been coupled with observations at other wavelengths from space and ground to probe galaxy structure at redshifts extending to z=9 and beyond. Most analyses of galaxy evolution as a function of redshift favour the general conclusion that the global star formation rate peaked at redshifts in the range z=2 to 3. Extensive star formation in proto-galaxies at those redshifts leads to extensive gaseous outflows and strong interactions. The present program aims to build on past research by using the spectroscopic capabilities offered by the WFC3-IR grism to survey fields centred on 15 high-redshift QSOs whose spectra have been used to probe the line-of-sight structure of the intergalactic medium. The grism observations will permit dientification of fainter galaxies that may be associated with the strong absorbers detected in the QSO spectra. |
GO 12473: An Optical Transmission Spectral Survey of hot-Jupiter Exoplanetary Atmospheres
An artist's impression of the hot Jupiter circling a solar-type star |
The first planet orbiting another star was discovered in 1995 around the relatively rbight G dwarf, 51 Pegasi. 51 Pegb confounded expectations as a jovian-mass gas giant in a 3-day orbit, placing it closer to the parent star than Mercury in our Solar System. Over the past nearly 20 years, numerous other systems have been identified, with the most recent flood of identifications coming from the Kepler satellite, which is pushing the detection limit to objects as small as earth in orbits with semi-major axes exceeding 1 AU. Many of these new detections (and all of the Kepler detections) are transiting systems. Transiting systems offer a potential gold-mine for extrasolar planetary studies, since not only is the orbital inclination well defined, but the diameter (and hence the average density) can be measured directly from the eclipse depth, while the atmospheric composition can be probed through line absorption or re-radiated thermal flux. The results from these measurments can be used to test, and improve, theoretical models of extrasolar planets. These observations are best done from space (indeed, the only unequivocally successful atmospheric observations to date have been with HST and Spitzer). The present program targets nine systems, all discovered through ground-based surveys (the WASP and HAT surveys), and all comprising jovian-mass planets in short-period orbits. The program will use STIS to obtain optical spectra, covering the full wavelength range with the G430L and G750L gratings, while WFC3 will be used to target near-IR spectra with the G141 grism. |
GO 12512: Debris Disk Chemistry from Spatially Resolved Spectroscopy
HST image of the debris disk around two nearby A stars, including HR 4796, one of the stars targeted by this program |
Planet formation occurs in circumstellar disks around young stars. Most of the gaseous content of those disks dissipates in less than 10 million years, leaving dusty debris disks that are detectable through reflect light at near-infrared and, to a lesser extent, optical wavelengths. The structure of those disks is affected by massive bodies (i.e. planets and asteroids), which, through dynamical interactions and resonances, can produce rings and asymmetries. Analysis of the rangle of morphological structure in these systems provides insight into the distribution of properties of planetary systems. HST currently provides the most effective (in some cases, the only) means of achieving the high-contrast required for the detection of scattered light from these disks in the presence of the bright parent stars, and a number of HST post-SM4 programs are being devoted to obtaining high-resolution images for newly discovered systems (eg GO 12228, 12291, 12573, 12576). The present program takes a different tack, aiming to obtain spectroscopic imaging of disks around three bright nearby stars. The aim is to use the Space Telescope Imaging Spectrograph in coronagraphic mode, where an occulting bar is placed over the central star. The observations will be made with the G430L and G750L low-resoltuion gratings, covering the near-UV, optical and far-red regions of the spectrum. The resulting spectra will provide insight on the composition of the dust grains in these relatively young systems. |