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Mini-Workshop: The End of the Dark Ages Webcasts
Wednesday Mar 15, 2006
Mini-Workshop: The End of the Dark Ages
Massimo Stiavelli  (Space Telescope Science Institute)
I will briefly discuss the Hubble Ultra Deep Field and its present and future followup observations and their potential to investigate the Universe at redshift greater than 7. I will then discuss the strategies that the James Webb Space Telescope wil ...
Mini-Workshop: The End of the Dark Ages
Jonathan Gardner (NASA Goddard Space Flight Center)
The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources to form and to determine the ionization history of t ...
Mini-Workshop: The End of the Dark Ages
Richard Ellis  (California Institute of Technology)
I will provide an update of the growing evidence that the assembled stellar mass at z~5-6 implies an earlier era of significant star formation, activity that has yet to be directly detected by extant searches. This puzzle provides a strong motivation ...
Mini-Workshop: The End of the Dark Ages
Nino Panagia  (Space Telescope Science Institute)
Reionization is a process that depends on the ultraviolet (UV) output of galaxies integrated over the time interval when they are active UV sources. This fact is particularly relevant for the case of Balmer-break galaxies (BBG) because, when these ga ...
Mini-Workshop: The End of the Dark Ages
Masami Ouchi (Space Telescope Science Institute)
I will present our results and on-going efforts of clustering analysis for Ly-a emitters and dropout galaxies at z=3-7. We have carried out very deep wide-field optical broad- and narrow-band imaging down to i'=27.5 for the contiguous 1 deg^2 field o ...
Mini-Workshop: The End of the Dark Ages
Massimo Ricotti  (University of Maryland)
I discuss several possible sources sources of reionization such as globular clusters, population III stars and accreting black holes and how reionization may happen in these different scenarios.
Mini-Workshop: The End of the Dark Ages
Bahram Mobasher  (Space Telescope Science Institute)
I present results of the search for a new population of extremely massive and evolved galaxies at z > 5.
Tuesday Mar 14, 2006
Mini-Workshop: The End of the Dark Ages
Mike Fall  (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Elizabeth Stanway (University of California, Irvine)
Recent observations indicate that the epoch of reionization ended at redshift z ~ 6, motivating direct searches for the star forming galaxies that are its the most likely cause. Star-forming galaxies at redshifts z > 7 may be detectable and mappable ...
Mini-Workshop: The End of the Dark Ages
Anton Koekemoer (Space Telescope Science Institute)
Candidate AGN at redshifts ~ 6 - 7 can be selected by means of their lack of optical detections, as compared with their relatively bright X-ray flux. The discovery of Extreme X-ray / Optical sources (`EXO's) has provided samples of such sources, whic ...
Mini-Workshop: The End of the Dark Ages
Rychard Bouwens  (University of California, Santa Cruz)
I will summarize what we know about z~6 galaxies from the observations.
Mini-Workshop: The End of the Dark Ages
Paul Shapiro  (The University of Texas at Austin)
When the universe was reionized, small-scale cosmic structure exerted a strong feedback effect which left its imprint on all scales from the smallest to the largest. When the first stars formed inside minihalos of mass ~ 106 solar masses at redshifts ...
Mini-Workshop: The End of the Dark Ages
Elizabeth Barton (University of Wisconsin-Madison)
I will discuss observations of galaxies at extreme redshifts (z>5) and what these tell us about the history of star formation and the assembly of stellar of stellar mass. I will describe how HST imaging with ACS (for example the Ultra Deep Field) has ...
Mini-Workshop: The End of the Dark Ages
Renyue Cen (Princeton University)
I will discuss how the universe might have been reionized, how one might construct a physical picture that is consistent with several different, seemingly contradictory observations, how the consequence of reionization may be related to star formatio ...
Mini-Workshop: The End of the Dark Ages
Rodger Thompson (Steward Observatory)
We have traced the star formation history of the NICMOS region of the Hubble Ultra Deep Field (HUDF) to a redshift of 6 and have compared it to similar results in the Northern Hubble Deep Field (NHDF). The HUDF offers and independent measure of the s ...
Mini-Workshop: The End of the Dark Ages
Lennox Cowie  (Institute for Astronomy, University of Hawaii)
I will discuss the evolution, in the range z = 5 - 6.5, of potential neutral intergalactic medium tracers, such as OI/CII absorption lines and dark gaps in the quasar spectra, and compare with the evolution of ionized tracers, such as Lyman alpha emi ...
Mini-Workshop: The End of the Dark Ages
James Rhoades  (n/a)
No description found.
Mini-Workshop: The End of the Dark Ages
Nobunari Kashikawa (NAOJ)
We report an extensive search for Lyman alpha emitters at z=6.5 (z6p5LAEs) in the Subaru Deep Field. Subsequent spectroscopy with Subaru/Keck identified eight more z6p5LAEs, giving us a total of 17 spectroscopically confirmed z6p5LAEs. Based on these ...
Monday Mar 13, 2006
Mini-Workshop: The End of the Dark Ages
Mike Hauser  (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Rick White  (Space Telescope Science Institute)
The most distant quasars act as beacons for the study of the gas in the intergalactic medium when the universe was less than one billion years old. We argue that there is strong evidence for a change in the ionized fraction of hydrogen at z=6, which ...
Mini-Workshop: The End of the Dark Ages
Presenter: Kyungjin Ahn (The University of Texas at Austin)
The first stars are believed to have formed at redshift z>~20 inminihalos of mass ~10^6 solar masses. The energy released by these first stars had a strong feedback effect on the surrounding gas. One recent study suggests that the ionizing radiation ...
Mini-Workshop: The End of the Dark Ages
Gerard Kriss  (Space Telescope Science Institute)
The neutral hydrogen and ionized helium absorption in the spectra of quasars probe the structure of intergalactic gas in the early universe. At redshifts above 3.5, the universe is opaque to He II absorption. At lower redshifts, this opacity decrease ...
Mini-Workshop: The End of the Dark Ages
Steven Furlanetto (Yale University)
Recent observations paint a complex picture of reionization, implying that the ionizing sources and the intergalactic medium interact through a rich set of physical processes. Unfortunately, disentangling these processes requires new windows into thi ...
Mini-Workshop: The End of the Dark Ages
Benedetta Ciardi  (MPA)
With the advent in the near future of the new generation of low frequency radio telescopes a new window on the high-redshift universe will be opened. In particular, it will be possible, for the first time, to observe the 21cm signal from the diffuse ...
Mini-Workshop: The End of the Dark Ages
Sangeeta Malhotra (Arizona State University)
The visibility of Lyman-alpha emission from galaxies should be suppressed completely or partially at redshifts beyond reionization. By comparing luminosity function of Lyman-alpha emitters at z=5.7 and z=6.5, we conclude a factor of three attenuation ...
Mini-Workshop: The End of the Dark Ages
Llian Iliev  (CITA)
Reionization is a complex process, many features of which can only be modelled by detailed numerical radiative transfer simulations. I will review the current status of the field. In particular, I will discuss the basic requirements for such simulati ...
Mini-Workshop: The End of the Dark Ages
Brian O'Shea  (Los Alamos National Lab)
We use the cosmological adaptive mesh refinement code Enzo to do a suite of high-resolution numerical simulations of the formation of Population III protostellar clouds in a cosmological context. These simulations cover a range of box sizes and distr ...
Mini-Workshop: The End of the Dark Ages
Olivier Dore (n/a)
No description found.
Mini-Workshop: The End of the Dark Ages
Matt McQuinn (Harvard University)
A number of radio interferometers are currently being planned or constructed to observe 21 cm emission from reionization. Not only will such measurements provide a detailed view of the Epoch of Reionization, but, since the 21 cm emission also traces ...
Mini-Workshop: The End of the Dark Ages
Tomonori Totani  (Kyoto University)
The gamma-ray burst (GRB) 050904 at z = 6.3 provides the first opportunity of probing the intergalactic medium (IGM) by GRBs at the epoch of the reionization. Here we present a spectral modeling analysis of the optical afterglow spectrum taken by the ...
Mini-Workshop: The End of the Dark Ages
Tommy Wiklind  (ESA/STScI)
Applying a selection technique based on near- and mid-infrared photometric data and targeting the Balmer break feature, it is possible to define a sample of galaxies that are old (>200 Myr), massive (~10^11 Msun) and situated at redshifts z > 5. We h ...
Mini-Workshop: The End of the Dark Ages
Tomonori Totani (Kyoto University)
No description found.
Mini-Workshop: The End of the Dark Ages
Jonathan P. Gardner (NASA Goddard Space Flight Center)
No description found.
Mini-Workshop: The End of the Dark Ages
Brian O'Shea (Los Alamos National Laboratory)
No description found.
Mini-Workshop: The End of the Dark Ages
Elizabeth Barton (University of California, Irvine)
No description found.
Mini-Workshop: The End of the Dark Ages
Matt McQuinn (Harvard University)
No description found.
Mini-Workshop: The End of the Dark Ages
Steven Furlanetto (Yale University)
No description found.
Mini-Workshop: The End of the Dark Ages
Kyungjin Ahn (The University of Texas at Austin)
No description found.
Mini-Workshop: The End of the Dark Ages
Paul Shapiro (The University of Texas at Austin)
No description found.
Mini-Workshop: The End of the Dark Ages
Rodger Thompson (Steward Observatory)
No description found.
Mini-Workshop: The End of the Dark Ages
Michael Fall (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Nino Panagia (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Tommy Wiklind (ESA/Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Nobunari Kashikawa (NAOJ)
No description found.
Mini-Workshop: The End of the Dark Ages
Roban Kramer (Columbia University)
No description found.
Mini-Workshop: The End of the Dark Ages
Masami Ouchi (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Massimo Ricotti (University of Maryland)
No description found.
Mini-Workshop: The End of the Dark Ages
Gerard Kriss (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Bahram Mobasher (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Renyue Cen (Princeton University)
No description found.
Mini-Workshop: The End of the Dark Ages
Richard L. White (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Benedetta Ciardi (MPA)
No description found.
Mini-Workshop: The End of the Dark Ages
Rychard Bouwens (University of California, Santa Cruz)
No description found.
Mini-Workshop: The End of the Dark Ages
Ilian Iliev (CITA)
No description found.
Mini-Workshop: The End of the Dark Ages
Massimo Stiavelli (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Anton Koekemoer (Space Telescope Science Institute)
No description found.
Mini-Workshop: The End of the Dark Ages
Elizabeth Stanway (University of Wisconsin-Madison)
No description found.
Mini-Workshop: The End of the Dark Ages
Sangeeta Malhotra (Arizona State University)
No description found.
Mini-Workshop: The End of the Dark Ages
Lennox Cowie (Institute for Astronomy, University of Hawaii)
No description found.
Mini-Workshop: The End of the Dark Ages
Richard Ellis (California Institute of Technology)
No description found.