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: http://www.stsci.edu/~inr/thisweek1/2010/thisweek214.html
Дата изменения: Mon Jan 31 17:36:29 2011 Дата индексирования: Fri Feb 11 05:07:29 2011 Кодировка: Поисковые слова: hubble deep field |
| Program Number | Principal Investigator | Program Title |
|---|---|---|
| 11548 | S. Thomas Megeath, University of Toledo | NICMOS Imaging of Protostars in the Orion A Cloud: The Role of Environment in Star Formation |
| 11563 | Garth D. Illingworth, University of California - Santa Cruz | Galaxies at z~7-10 in the Reionization Epoch: Luminosity Functions to <0.2L* from Deep IR Imaging of the HUDF and HUDF05 Fields |
| 11579 | Alessandra Aloisi, Space Telescope Science Institute | The Difference Between Neutral- and Ionized-Gas Metal Abundances in Local Star-Forming Galaxies with COS |
| 11588 | Raphael Gavazzi, CNRS, Institut d'Astrophysique de Paris | Galaxy-Scale Strong Lenses from the CFHTLS survey |
| 11592 | Nicolas Lehner, University of Notre Dame | Testing the Origin{s} of the Highly Ionized High-Velocity Clouds: A Survey of Galactic Halo Stars at z>3 kpc |
| 11594 | John M. O'Meara, Saint Michaels College | A WFC3 Grism Survey for Lyman limit absorption at z=2 |
| 11598 | Jason Tumlinson, Space Telescope Science Institute | How Galaxies Acquire their Gas: A Map of Multiphase Accretion and Feedback in Gaseous Galaxy Halos |
| 11613 | Roelof S. de Jong, Astrophysikalisches Institut Potsdam | GHOSTS: Stellar Outskirts of Massive Spiral Galaxies |
| 11625 | Ivan Hubeny, University of Arizona | Beyond the classical paradigm of stellar winds: Investigating clumping, rotation and the weak wind problem in SMC O stars |
| 11630 | Kathy Rages, SETI Institute | Monitoring Active Atmospheres on Uranus and Neptune |
| 11631 | Iain Neill Reid, Space Telescope Science Institute | Binary brown dwarfs and the L/T transition |
| 11644 | Michael E Brown, California Institute of Technology | A dynamical-compositional survey of the Kuiper belt: a new window into the formation of the outer solar system |
| 11657 | Letizia Stanghellini, National Optical Astronomy Observatory, AURA | The population of compact planetary nebulae in the Galactic Disk |
| 11670 | Peter Garnavich, University of Notre Dame | The Host Environments of Type Ia Supernovae in the SDSS Survey |
| 11677 | Harvey B. Richer, University of British Columbia | Is 47 Tuc Young? Measuring its White Dwarf Cooling Age and Completing a Hubble Legacy |
| 11694 | David R. Law, University of California - Los Angeles | Mapping the Interaction between High-Redshift Galaxies and the Intergalactic Environment |
| 11696 | Matthew A. Malkan, University of California - Los Angeles | Infrared Survey of Star Formation Across Cosmic Time |
| 11702 | Hao-Jing Yan, The Ohio State University Research Foundation | Search for Very High-z Galaxies with WFC3 Pure Parallel |
| 11721 | Richard S. Ellis, California Institute of Technology | Verifying the Utility of Type Ia Supernovae as Cosmological Probes: Evolution and Dispersion in the Ultraviolet Spectra |
| 11731 | C. S. Kochanek, The Ohio State University | Studying Cepheid Systematics in M81: H-band Observations |
| 11741 | Todd Tripp, University of Massachusetts | Probing Warm-Hot Intergalactic Gas at 0.5 < z < 1.3 with a Blind Survey for O VI, Ne VIII, Mg X, and Si XII Absorption Systems |
| 12056 | Julianne Dalcanton, University of Washington | A Panchromatic Hubble Andromeda Treasury - I |
| 12061 | Sandra M. Faber, University of California - Santa Cruz | Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey -- GOODS-South Field, Early Visits of SNe Search |
| 12320 | Brian Chaboyer, Dartmouth College | The Ages of Globular Clusters and the Population II Distance Scale |
GO 11563: Galaxies at z~7-10 in the Reionization Epoch: Luminosity Functions to <0.2L* from Deep IR Imaging of the HUDF and HUDF05 Fields
The ACS optical/far-red image of the Hubble Ultra Deep Field
|
Galaxy evolution in the early Universe is a discipline of astronomy that has been transformed by observations with the Hubble Space Telescope. The original Hubble Deep Field, the product of 10 days observation in December 1995 of a single pointing of Wide Field Planetary Camera 2, demonstrated conclusively that galaxy formation was a far from passive process. The images revealed numerous blue disturbed and irregular systems, characteristic of star formation in galaxy collisions and mergers. Building on this initial progam, the Hubble Deep Field South (HDFS) provided matching data for a second southern field, allowing a first assessment of likely effects due to field to field cosmic variance, and the Hubble Ultra-Deep Field (UDF) probed to even fainter magitude with the Advanced Camera for Surveys (ACS). The highest redshift objects found in the UDF have redshifts approaching z~7. Pushing to larger distances, and greater ages, demands observatons at near-infrared wavelengths, as the characteristics signatures of star formation are driven further redward in the spectrum. The present program aims to extend observations beyond z~8 to z+9 or even 10 by using the WFC3-IR camera to obtain deep F850LP (Y), F105W (J) and F160W (H) images centred on the UDF and two flanking fields. Parallel observations with ACS will be used to extend the visible and red imaging data to even fainter magitudes. |
GO 11630 Monitoring active Atmospheres on Uranus and Neptune
Nicmos image of aurorae on Uranus
|
The atmospheres of the gas giant planets in the solar system are dynamic entities that can exhibit dramatic changes over a variety of timescales. Those changes are most apparent in Jovian atmosphere, which displays a wide variety of bands and spots, reflecting complex meteorological phenomena (see, e.g., previous ACS observations of the upper atmosphere and of the new little red spot ). This is not surprising since Jupiter atmosphere receives the highest input of solar energy. However, secular variations are also evident in the atmospheres of the outer planets, albeit usually at a more subtle level. The present program builds on past HST programs (see Program GO 10534 ) that have monitored atmospheric changes in the two outermost gas giants, Uranus and Neptune. Both exhibit long-term seasonal variations, whose origins are not yet well understood; both are capable of generating dark spots - phenomena that are presumably related to Jupiter's Great Red Spot and Saturn's Great White Spot. The present observations use a variety of filters on Wide-Field Camera 3 (notably the quad methane filter) to probe conditions are a variety of levels within the planetary atmospheres. |
GO 11741: Probing Warm-Hot Intergalactic Gas at 0.5 < z < 1.3 with a Blind Survey for O VI, Ne VIII, Mg X, and Si XII Absorption Systems
Probing the intergalactic medium via QSO absorption lines
|
One of the key issues facing modern cosmology is the "missing baryon" problem. In brief, a census of all the constituents in the local universe accounts for less than half of the baryonic mass expected based on measurements of the fractional abundanmce of deuterium and observations of the cosmic microwave background. It is generally believed that the missing material lurks in the form of extremely hot gas in the intergalactic medium. The most effective means of probing that medium, and testing this hypothesis, is to search for the appropriate absorption lines in the spectrum of a background source. QSOs are particularly effective cosmic searchlights, since they have strong continuum flux levels at the ultraviolet wavelengths where most of the important absorption lines fall. Following SM4, and the installation of the Cosmic Origins Spectrograph, HST is now well equipped to tackle this type of program, and search fgor a full accounting of the baryonic universe. The present program weill use COS to obtain spectra of nine QSOs at redshifts beyond z=0.89, and will search for warm-hot intergalactic gas in the redshift range 0.5 < z < 1.3. |
GO 12061: Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey -- GOODS-South Field, Early Visits of SNe Search
Part of the GOODS/Chandra Deep Field South field, as imaged by HST
|
CANDELS is one of three Multi-Cycle Treasury Program, whose observations will be
executed over the next three HST Cycles. It builds on past investment of both
space- and ground-based observational resources. In particular, it includes
coverage of the two fields of the Great Observatory Origins Deep Survey (GOODS),
centred on the northern Hubble Deep Field (HDF)
in Ursa Major and the Chandra Deep Field-South in Fornax. In addition to deep
HST data at optical and near-infrared wavelengths, the fields have been covered at
X-ray wavelengths by Chandra (obviously) and XMM-Newton; at mid-infrared wavelengths
with Spitzer; and ground-based imaging and spectroscopy using numerous telescopes,
including the Kecks, Surbaru and the ESO VLT. This represents an accumulation of
almost 1,000 orbits of HST time, and comparable scale allocations on Chandra, Spitzer
and ground-based facilities.
The CANDELS program is capitalising on
this large investment, with new observations with WFC3 and ACS on both GOODS fields, and on
three other fields within the COSMOS, EGS and UDS survey areas (see
this link for more
details). The prime aims of the program are twofold: reconstructing
the history of galaxy formation, star formation and nuclear galactic activity at redshifts
between z=8 and z=1.5; and searching for high-redshift supernovae to measure
their properties at redshifts between z~1 and z~2. The program incorporates a tiered
set of observations that complement, in areal coverage and depth, the deep UDF observations,
while the timing of individual observations will be set to permit detection of high erdshift
SNe candidates, for subsequent separate follow-up.