| Program Number | Principal Investigator | Program Title |
|---|---|---|
| 13776 | Michael D. Gregg, University of California - Davis | Completing The Next Generation Spectral Library |
| 14072 | Martha L. Boyer, University of Maryland | The Evolution of Metal-rich Asymptotic Giant Branch Stars |
| 14074 | Roger Cohen, Universidad de Concepcion | Opening the Window on Galaxy Assembly: Ages and Structural Parameters of Globular Clusters Towards the Galactic Bulge |
| 14076 | Boris T. Gaensicke, The University of Warwick | An HST legacy ultraviolet spectroscopic survey of the 13pc white dwarf sample |
| 14080 | Anne Jaskot, Smith College | LyC, Ly-alpha, and Low Ions in Green Peas: Diagnostics of Optical Depth, Geometry, and Outflows |
| 14082 | Dan Maoz, Tel Aviv University - Wise Observatory | Connecting white dwarf rotation and debris accretion |
| 14084 | Seth Redfield, Wesleyan University | Connecting Earth with its Galactic Environment: Probing Our Interstellar Past Along the Historical Solar Trajectory |
| 14086 | Jay Strader, Michigan State University | Dynamical Confirmation of a Stellar-mass Black Hole in the Globular Cluster M62 |
| 14096 | Dan Coe, Space Telescope Science Institute - ESA | RELICS: Reionization Lensing Cluster Survey |
| 14098 | Harald Ebeling, University of Hawaii | Beyond MACS: A Snapshot Survey of the Most Massive Clusters of Galaxies at z>0.5 |
| 14105 | Jonathan David Nichols, University of Leicester | Observing Jupiter's FUV auroras near Juno orbit insertion |
| 14119 | Luciana C. Bianchi, The Johns Hopkins University | Understanding Stellar Evolution of Intermediate-Mass Stars from a New Sample of SiriusB-Like Binaries |
| 14121 | Edward M. Cackett, Wayne State University | Probing the accretion disk in the Seyfert 1 NGC 4593 |
| 14134 | Swara Ravindranath, Space Telescope Science Institute | Spectral Diagnostics for the Reionization Era: Exploring the Semi-Forbidden CIII] Emission in Low Metallicity Green Pea Galaxies |
| 14164 | Ata Sarajedini, University of Florida | Exploring the nature and synchronicity of early cluster formation in the Local Group |
| 14171 | Guangtun Zhu, The Johns Hopkins University | Characterizing the Circumgalactic Medium of Luminous Red Galaxies |
| 14172 | Brendan Bowler, University of Texas at Austin | Imaging Accreting Protoplanets in the Young Cluster IC 348 |
| 14178 | Matthew A. Malkan, University of California - Los Angeles | WFC3 Infrared Spectroscopic Parallel Survey: The WISP Deep Fields |
| 14181 | S Thomas Megeath, University of Toledo | A Snapshot WFC3 IR Survey of Spitzer/Hershel-Identified Protostars in Nearby Molecular Clouds |
| 14212 | Karl Stapelfeldt, Jet Propulsion Laboratory | A Snapshot Imaging Survey of Spitzer-selected Young Stellar Objects in Nearby Star Formation Regions*.t23 |
| 14219 | John P. Blakeslee, Dominion Astrophysical Observatory | Homogeneous Distances and Central Profiles for MASSIVE Survey Galaxies with Supermassive Black Holes |
| 14230 | Jane R. Rigby, NASA Goddard Space Flight Center | The Ultimate Emission Line Diagnostics Study at z=1.4 |
| 14236 | Sangmo Tony Sohn, The Johns Hopkins University | The First Proper Motions of Ultra-faint Dwarf Galaxies: Probing Reionization and Planar Associations of Satellites |
| 14255 | Sjoert van Velzen, The Johns Hopkins University | A First Look at the Late Stages of Accretion in Tidal Disruption Flares |
| 14268 | Nicolas Lehner, University of Notre Dame | Project AMIGA: Mapping the Circumgalactic Medium of Andromeda |
| 14277 | John Thomas Stocke, University of Colorado at Boulder | Probing Hot Gas in Spiral-Rich Galaxy Groups |
| 14327 | Saul Perlmutter, University of California - Berkeley | See Change: Testing time-varying dark energy with z>1 supernovae and their massive cluster hosts |
| 14331 | Jeremy J. Drake, Smithsonian Institution Astrophysical Observatory | The first mass and angular momentum loss measurements for a CV-like binary |
| 14456 | Mark Brodwin, University of Missouri - Kansas City | Determining the Role of Merging in the Growth of the Galaxy Cluster Population in the Massive and Distant Clusters of WISE Survey |
| 14496 | Andrew B. Newman, Carnegie Institution of Washington | Resolving the Stellar Populations, Structure, and Kinematics of the NIR-Brightest Lensed Galaxy at z=2 |
| 14528 | Patrick Kelly, University of California - Berkeley | Caustic Crossing of a Strongly Lensed Massive Star |
GO 14084: Connecting Earth with its Galactic Environment: Probing Our Interstellar Past Along the Historical Solar Trajectory
The Sun's path through the local interstellar medium |
The Sun's motion around the Galaxy takes it through a range of environments within the interstellar medium.At the present time the Sun lies on the edge of the "Local Bubble", a region of very low gas density. Its recent motions took it through a cloud of interstellar material that is moving radially outward within the disk. It is not clear how, or indeed whether, the local ISM has a significant effect on solar heliosphere and the individual bodies in the Solar System, including Earth. The present program aims to explore that issue through high resolution ultraviolet spectroscopy of eight stars that lie in the direcion of the Sun's past motion. These stars serve as backlights to the local ISM, whose component elements manifest themselves by absorbing the stellar light. The observations will use the Cosmic origins Spectrograph to search for characteristics features due to ionised Fe II and Mg II. |
GO 14105: Observing Jupiter's FUV auroras near Juno orbit insertion
Hubble ultraviolet image of auroral activity near Jupiter's north magnetic pole |
Planetary aurorae are stimulated by the influx of charged particles from the Sun, which travel along magnetic field lines and funnel into the atmosphere near the magnetic poles. Aurorae therefore require that a planet has both a substantial atmosphere and a magnetic field. They are a common phenomenon on Earth, sometimes visible at magnetic latitudes more than 40 degrees from the pole, and have also been seen on Jupiter, Saturn, Uranus and Neptune. Jovian auroral activity is also affected by the Galilean satellites, which generate electric currents that can produce bright auroral spots (see figure), and, in some cases, have their own auroral storms. Hubble has monitored activity for more than two decades now, with a dedicated campaign during the International Heliosphysical Year (2007/2008) using the Advanced Camera for Surveys Solar Blind Channel. In 2011, NASA launched the JUpiter Near-polar Orbiter (JUNO) which 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 will arrive at Jupiter on july 4th 2016, and in prepartion for the orbital insertion, Hubble is obtaining a series of far-UV images using the Space Telescope Imaging Spectrograph (STIS). Those data will map auroral activity. In addition, the program will obtain spectral imaging by slewing STIS's slit across the auroral regions. |
GO 14268: Project AMIGA: Mapping the Circumgalactic Medium of Andromeda
The extent of Andromeda's gaseous halo, as sampled by COS |
Galaxy formation, and the overall history of star formation within a galaxy, clearly demands the presence of gas. The detailed evolution therefore depends on how gas is accreted, recycled, circulated through the halo and, perhaps, ejected back into the intergalactic medium. Tracing that evolutionary history is difficult, since gas passes through many different phases, some of which are easier to detect than others. During accretion and, probably, subsequent recycling, the gas is expected to be reside predominantly at high temperatures. The most effective means of detecting such gas is through ultraviolet spectroscopy, where gas within nearby systems can be detected as absorption lines superimposed on the spectra of more distant objects, usually quasars. Extensive observations of galaxies at modest redshift (0.15 < z < 0.35) have shown that material extends to radii of hundreds of kpc, with a total mass in metals that is at least comparable with the mass in the central galaxy. Andromeda, the nearest large spiral to the Milky Way,provides an unparalleled opportunity to probe the detailed structure of the gaseous halo. The present program will target background QSOs along 18 sightlines at radial distances between 25 and 330 kpc. from Andromeda's nucleus. Combined with archival data for 7 other background targets, these data will be sensitive to a wide range of key species OI 1302, CII 1334, SiII 1190, 1193, 1523, SiIII 1206, SiIV 1393,1402, CIV 1548, 1550), probing the composition and ionisation of the halo. |
GO 14528: Caustic Crossing of a Strongly Lensed Massive Star
Finding chart for the multiply imaged supernova, SN Refsdal, discovered in November 2014 in cluster MACJ1149 |
Over the past three cycles, Hubble has been undertaking deep
imaging observations 6 galaxy clusters as the Frontier Fields Director's
Time program. Those observations have provided a basis for several synergistic programs.
In particular, the observations enabled a search for supernovae at
high redshifts, z> 1.5, aiming to set further constraints on dark energy and probing the frequency of supernovae
as a function of redshift, the delay time and hence the likely progenitors.
In 2014, observations of the fourth cluster, MACSJ1149.5+2223, resulted in the detection of a particularly unusual object - multiple lensed images of a supernova in a redshift z=1.49 galaxy that is itself multiply lensed. Each of those images results from light following a different path due to the gravitational potential of the foreground cluster and galaxies. Dubbed Supernova Refsdahl, after the gravitational lensing pioneer, the original detections were followed over the course of their fading. But, more spectacularly, models of the cluster potential and the consequent light paths led to a prediction that the supernova should appear in one of the other lensed images of the parent galaxy in late 2015. The supernova was not present in observations obtained on November 14, 2015, but was detected in the December 11 observations, thus representing the first time that a supernova has been "predicted" successfully.Further observations are being obtained to monitor the light curve. Subsequent observations have revealed a new variable object within the cluster, approximately 5 arcsec from Refsdahl; its brightness is being tracked. Models strongly suggest that the source originates from a single early-type star at edshift z~1.49 that is crossing a gravitational caustic, leading to an brightness amplfication of somehwere between 105 and 106. The present program aims to determine the source of the brightness fluctuations in the light curve. |