| Program Number | Principal Investigator | Program Title |
|---|---|---|
| 13665 | Bjoern Benneke, California Institute of Technology | Exploring the Diversity of Exoplanet Atmospheres in the Super-Earth Regime |
| 14077 | Boris T. Gaensicke, The University of Warwick | The frequency and chemical composition of rocky planetary debris around young white dwarfs: Plugging the last gaps |
| 14080 | Anne Jaskot, Smith College | LyC, Ly-alpha, and Low Ions in Green Peas: Diagnostics of Optical Depth, Geometry, and Outflows |
| 14096 | Dan Coe, Space Telescope Science Institute - ESA | RELICS: Reionization Lensing Cluster Survey |
| 14141 | Guy Worthey, Washington State University | NGSL Extension 1. Hot Stars and Evolved Stars |
| 14198 | Oleg Y. Kargaltsev, George Washington University | Establishing the nature of the far-UV emission from the double pulsar. |
| 14248 | Michael J Koss, Eureka Scientific Inc. | Studying Dual AGN Activity in the Final Merger Stage |
| 14251 | Amy E. Reines, National Optical Astronomy Observatory, AURA | The Structures of Dwarf Galaxies Hosting Massive Black Holes |
| 14594 | Rich Bielby, Durham Univ. | QSAGE: QSO Sightline And Galaxy Evolution |
| 14597 | Jay Farihi, University College London | An Ultraviolet Spectral Legacy of Polluted White Dwarfs |
| 14602 | Jay Christopher Howk, University of Notre Dame | The Perseus Project: Probing Metal Mixing, Dust Destruction, and Kinematics in the Vertical Extension of the Perseus Arm |
| 14608 | Nadia L Zakamska, The Johns Hopkins University | Host galaxies of high-redshift quasars with extreme outflows |
| 14618 | Michael Shara, American Museum of Natural History | Ultraviolet Flashers in M87: Rapidly Recurring Novae as SNIa Progenitors |
| 14622 | Katherine E. Whitaker, University of Connecticut | A Chance Alignment: Resolving a Massive Compact Galaxy Actively Quenching at z=1.8 |
| 14633 | Kevin France, University of Colorado at Boulder | A SNAP UV Spectroscopic Study of Star-Planet Interactions |
| 14634 | Denis C Grodent, Universite de Liege | HST-Juno synergistic approach of Jupiter's magnetosphere and ultraviolet auroras |
| 14636 | Igor Dmitrievich Karachentsev, Russian Academy of Sciences, Special Astrophysical Obs. | TRGB Distances to the Edge Between the Local Sheet and Virgo Infall: Last of the Low Hanging Fruit |
| 14639 | Thomas J. Maccarone, Texas Tech University | Finding AM CVn stars in 47 Tuc |
| 14645 | Schuyler D. Van Dyk, California Institute of Technology | The Stellar Origins of Supernovae |
| 14649 | Katherine Anne Alatalo, Carnegie Institution of Washington | Opening a New Window into Galaxy Evolution Through the Lens of CO-detected Shocked Poststarburst Galaxies |
| 14653 | James Lowenthal, Smith College | The most luminous galaxies: strongly lensed SMGs at 1 |
| 14661 | Michael H. Wong, University of California - Berkeley | Wide Field Coverage for Juno (WFCJ): Jupiter's 2D Wind Field and Cloud Structure |
| 14669 | Julie Hlavacek-Larrondo, Universite de Montreal | Ultramassive Black Holes in Brightest Cluster Galaxies |
| 14685 | Wen-fai Fong, University of Arizona | Underlying Hosts or Highly-Kicked? Determining the Nature of Host-less Short Gamma-ray Bursts with HST |
| 14703 | Andrea Banzatti, | Measuring residual H2 gas from small to large gaps in protoplanetary disks: different pathways to planets? |
| 14707 | Philip Louis Massey, Lowell Observatory | Searching for the Most Massive Stars in M31 and M33 |
| 14710 | Antonino Paolo Milone, Australian National University | Multiple Stellar Populations in Young Magellanic Cloud Clusters |
| 14779 | Melissa Lynn Graham, University of Washington | A NUV Imaging Survey for Circumstellar Material in Type Ia Supernovae |
| 14840 | Andrea Bellini, Space Telescope Science Institute | Schedule Gap Pilot |
| 14884 | Jessica Agarwal, Max Planck Institute for Solar System Research | Characterising the dust ejection process in the first known active binary asteroid system 288P/300163. |
| 14898 | Jenny Emma Greene, Princeton University | The Ongoing Search for Supermassive Black Hole Binaries |
GO 14080: LyC, Ly-alpha, and Low Ions in Green Peas: Diagnostics of Optical Depth, Geometry, and Outflows
 A montage of green pea galaxies discovered by the Galaxy Zoo project |
Understanding the galaxy formation and galaxy evolution has been a strong focus of astronomical research since thne 1970s and remains a key issue for 21st century astrophysics. Since we cannot follow an individual galaxy through time, tackling these questions requires a statistical approach, and, as a result, large-scale surveys have played a crucial role in the field. In particular, the Sloan Digital Sky Survey, conducted from Apache point Observatory from the 1990s through the early years of this century, has provided a treasure trove of information of galaxies at low and moderate redshifts. One of the interesting discoveries that originated from SDSS was the discovery of so-called "green pea" galaxies - compact objects whose combined images have a greenish hue, originally uncovered by citizen scientists as part of the Galaxy Zoo project. Closer inspection shows that these are gas-rich galaxies lying at relatively low redshifts, 0.1 < z < 0.36, with the green-tinged hue partly stemming from the presence of strong oxygen ([O III]) emission. These characteristics indicate that the galaxies are undergoing strong star-forming episodes. The present program aims to take advantage of HST's unparalleled resolution and extraordinary sensitivity at ultraviolet wavelengths, and will use the Cosmic Origins Spectrograph to obtain spectra are far-UV wavelengths. Those observations will probe optical depth, the geometry of neutral gas and radiative transfer within these systems, revealing the physical structure of the underlying star forming regions and potentially offering insight into the nature of high redshift lyman-alpha emitters. |
GO 14636 :TRGB Distances to the Edge Between the Local Sheet and Virgo Infall: Last of the Low Hanging Fruit
The galaxies within the Local Group |
The Milky Way Galaxy is a member of a relatively sparse set of galaxies known as the Local Group. Fifty-four members are currently catalogued within ~1.5 Mpc., with the overwhelming majority being dwarf systems. The Milky Way and M31 are the two dominant members, with M33 the only other spiral system. Moving beyond the Local Group, we encounter five further galaxy groups within ~3 Mpc: the M81 group, the Canes I group, the Maffei group, the Sculptor group and the NGC 5128 group ( see this link ). Beyond them lies the Virgo supercluster. HST is well suited to mapping the distance distribution of the inner groups: the high sensitivity of the Advanced Camera for Surveys and Wide-Field Camera 3 combined with the unparalleled angular resolution enables resolution of the most luminous stars; constructing the colour-magnitude provides access to a number of distance indicators, including the tip of the first red giant branch (RGB). Red giants have completed the core hydrogen-burning main-sequence stage of evolution and have moved to burning hydrogen in an inner shell. The maximum luminosity in this phase, and hence the location of the tip of the RGB, is set when the core reaches a sufficiently high temperature to ignite helium burning, the so-called helium flash. At that point, hydrogen shell-burning is extinguished, the star contracts and moves onto the horizontal branch. The present program focuses on 20 galaxies lying ion the so-called "Local Sheet" in the foreground of the Virgo cluster. These systems have expected distances of 6-8 Mpc., lying at the extremes of the current capabilities of the TPRG method with Hubble. |
GO 14661: Wide Field Coverage for Juno (WFCJ): Jupiter's 2D Wind Field and Cloud Structure
Global map of Jupiter from OPAL's 2015 observations |
The gas giants and ice giants in the outer system have extended, dynamic gaseous atmospheres that show a range of phenomena reflecting the underlying composition and cloud structure. These are generally driven by solar insolation, with the consequence that the frequency, scale and range of features diminishes from Jupiter through saturn and Uranus to Neptune. Monitoring the changes in the wide variety of features in these atmospheres can provide insight into the velocity structure and the energy sources.Hubble has been monitoring Jupiter, Uranus and Neptune over the last 2 years as part of the Outer Planets Atmospheric Legacy (OPAL) prorgam. Jupiter is receiving poarticular attention this year following the arrival of the Juno probe in 2016. NASA launched the JUpiter Near-polar Orbiter in 2011, and it will provide the first in situ measurements of Jupiter's magnetic field and polar magnetosphere since the Galileo satellite which actively monitored Jupiter from 1995 to 2003. Juno arrived at Jupiter on July 4th 2016 and entered a 53-day orbit. The present program is designed to support in situ measurements made with the IR imager/spectrometer and the Microwave Radiometer. The program targets Jupiter with a wide range of broad and narrow-band filters on Wide Field Camera 3. |
GO 14710: Multiple Stellar Populations in Young Magellanic Cloud Clusters
WFPC2 image of NGC 330, one of the clusters imaged in this program |
Globular clusters are remnants of the first substantial burst of star formation in the Milky Way. With typical masses of a few x 105 solar masses, distributed among several x 106 stars, the standard picture holds that these are simple systems, where all the stars formed in a single starburst and, as a consequence, have the same age and metallicity. Until recently, the only known exception to this rule was the cluster Omega Centauri, which is significantly more massive than most clusters and has both double main sequence and a range of metallicities among the evolved stars. Omega Cen has been joined by several additional Galactic clusters, including NGC 2808, NGC 1851 and 47 Tucanae. There is growing evidence for similarly complex stellar populations within many of the high-mass globular clusters associated with the Large and Small Magellanic Clouds. In particular, most intermediate age (1-2 Gyr) systems have multiple populations,. Several clusters show clear evidence for bimodality in the red clump stars, which lie towards the base of the red giant branc; deeper observations show the presence of multiple main sequences. The origin of this feature is remains uncertain, but it may be significant that the Galactic clusters are amongst the most massive within the Milky Way's population. Age differences are a possibility, but that argument may be weakened by the detection of similar complexity in much younger (1-300 Myr) systems. The present program focuses on nine Magellanic clusters (LMC and SMC) with ages between 20 and 600 myrs, and masses between 3000 and 50000 solar masses. The WFC3-UVIS camera will be used to obtain deep F475W (B-band), F656N (H-alpha) and F814W (I-band) imaging for those clusters. |