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2011 Hubble Fellows Symposium Webcasts

Thursday Mar 10, 2011
2011 Hubble Fellows Symposium
Tabetha Boyajian  (Georgia State University)
Recent innovations in high-spatial-resolution astronomical techniques, in particular long-baseline optical/infrared interferometry, have enabled us to resolve the disks of nearby, main-sequence stars. The measurement of a star’s angular diameter comb ...
2011 Hubble Fellows Symposium
Trent Dupuy  (CfA/SAO)
Mass is the fundamental parameter that governs the evolution of stars, brown dwarfs, and gas-giant planets. Thus, direct mass measurements are essential to test the evolutionary and atmospheric models that underpin studies of low-mass objects. I will ...
2011 Hubble Fellows Symposium
Josh Carter  (Harvard-Smithsonian Center for Astrophysics)
The Kepler mission has opened a new domain in high-precision time-series photometry allowing for the wholesale detection of planetary systems and the detailed characterization of both stars and planets. The unprecedented quality of the data and the r ...
2011 Hubble Fellows Symposium
Kevin Covey  (Cornell University)
Low-mass M dwarf stars have recently been recognized as high priority targets for exoplanet surveys. M dwarfs possess sufficiently small masses and radii that potentially habitable Earth-like exoplanets can induce reflex velocities and transit depths ...
2011 Hubble Fellows Symposium
Daniel Fabrycky  (UC Santa Cruz)
On Feb. 2, the Kepler space mission released its first 4 months of data on all targets. Out of 997 targets with a candidate transiting exoplanet, 170 of them host multiple candidates. Deviations in transit timing allows us to confirm that some of the ...
2011 Hubble Fellows Symposium
Adam Kraus  (Univ. of Hawaii - IfA)
Young and directly-imaged exoplanets offer critical tests of planet-formation models that can't be matched by RV surveys of mature stars. These targets have been extremely elusive to date, with no exoplanets younger than 10-20 Myr and only a handful ...
2011 Hubble Fellows Symposium
Henry Hsieh  (Univ. of Hawaii - IfA)
Identified as a new class of solar system bodies just 5 years ago, main-belt comets (MBCs) exhibit cometary activity apparently driven by the sublimation of volatile ices, yet are dynamically indistinguishable from main-belt asteroids. Dynamical anal ...
2011 Hubble Fellows Symposium
Hilke Schlichting (UCLA)
Runway growth is an important stage in planet formation during which large protoplanets form, while most of the initial mass remains in small planetesimals. The amount of mass converted into large protoplanets and their resulting size distribution ar ...
2011 Hubble Fellows Symposium
Tom Soifer (n/a)
No description found.
Wednesday Mar 9, 2011
2011 Hubble Fellows Symposium
Brant Robertson (California Institute of Technology)
Star-forming galaxies represent a valuable tracer of cosmic history. Recent observational progress with the Hubble Space Telescope has led to the discovery and study of the earliest-known galaxies at a time when the universe was only ~800 million y ...
2011 Hubble Fellows Symposium
John Wise  (Princeton University)
The first stars and galaxies had a profound impact on the universe, leading to reionization and the chemical enrichment of the intergalactic medium. Here I present results from adaptive mesh refinement radiation hydrodynamics simulations that focus ...
2011 Hubble Fellows Symposium
Andrei Mesinger (Princeton University)
The first stars and galaxies are likely very different from their modern-day progeny and are at the forefront of astrophysical research. Unfortunately, it is very unlikely they can be directly observed in the near future. However, indirectly observ ...
2011 Hubble Fellows Symposium
Caitlin Casey (Univ. of Hawaii - IfA)
Selection effects in the submillimeter/far-infrared inhibit detailed analysis of extreme starbursts at z>1. Submillimeter Galaxy (SMG) detection and characterization biases against warm temperature SEDs (Tdust~50K), against the highest redshift ULIRG ...
2011 Hubble Fellows Symposium
Michael Cooper (UC Irvine)
Evolution in the global galaxy population over the past 7 Gyr has been dominated by two principal trends: a dramatic decline in the average level of star-formation activity combined with a substantial growth in the stellar mass density within the r ...
2011 Hubble Fellows Symposium
Suvi Gezari (Johns Hopkins University)
The GALEX Time Domain Survey (TDS) has opened a new window into the variable ultraviolet Universe. I will present results from 3 years of GALEX TDS NUV observations in spatial and temporal coordination with the optical Pan-STARRS Medium Deep Survey. ...
2011 Hubble Fellows Symposium
S. Mark Ammons (n/a)
No description found.
2011 Hubble Fellows Symposium
Mario Juric (Harvard University)
The 8th release of the Sloan Digital Sky Survey featured a new 2000 deg^2 of imaging, largely in the southern Galactic hemisphere. This allows us to perform model-free examination of North-South and East-West symmetry of the Milky Way, and detect and ...
2011 Hubble Fellows Symposium
Shelley Wright (UC Berkeley)
Integral field spectroscopy coupled with adaptive optics (AO) on 8-10m telescopes has recently become a powerful observational tool for studying galaxies in the early universe (z > 1) at sub-kiloparsec scales. I will present the latest results of an ...
2011 Hubble Fellows Symposium
Lucas Cieza  (University of Hawaii, IfA)
Circumstellar transition disks are objects with little or no excess emission at < 10 micron but significant excesses at longer wavelengths. Different mechanisms have been proposed to explain their inner opacity holes: planet formation, grain growth, ...
2011 Hubble Fellows Symposium
Melissa Enoch  (n/a)
The first hydrostatic core (FHSC) represents a very early phase in the low-mass star formation process, after collapse of the parent core has begun but before a true protostar has formed. This large (few AU), cool (100 K), pressure-supported core of ...
2011 Hubble Fellows Symposium
Elise Furlan  (JPL, Caltech)
JPL, Caltech We present a study of weak-lined T Tauri stars (WTTS) with infrared excesses of varying strength. These young pre-main-sequence stars are peculiar, since they lack signatures of accretion, but seem to be still surrounded by dusty disks. ...
2011 Hubble Fellows Symposium
Karin Oberg  (Harvard-Smithsonian CfA)
The disks around pre-main-sequence stars provide the reservoirs of raw material and initial conditions for the formation of planetary systems. Disk chemistry thus sets the stage for the composition of planetesimals and eventually planets; comet compo ...
2011 Hubble Fellows Symposium
Thomas Robitaille  (Harvard-Smithsonian Center for Astrophysics)
In this talk I will present results from work I have carried out using the Spitzer/GLIMPSE and MIPSGAL surveys to study intermediate and high-mass star formation on the scale of the Milky-Way. I will discuss a census of thousands of young stellar obj ...
2011 Hubble Fellows Symposium
Jose Prieto  (Carnegie Observatories)
The All-Sky Automated Survey for the Brightest Supernovae (ASAS-SN) is using small telescopes with wide field cameras to search for the brightest supernovae explosions. I will present the study of three bright supernovae in nearby galaxies and their ...
2011 Hubble Fellows Symposium
Mukremin Kilic  (Smithsonian Astrophysical Observatory)
Short period binary white dwarfs may merge within a Hubble time due to gravitational wave radiation. We have begun a targeted survey to find merging white dwarf systems, and our first results have tripled the number of known merging white dwarf syste ...
2011 Hubble Fellows Symposium
Maryam Modjaz  (Columbia University)
Long-duration gamma-ray bursts (GRBs) and Type Ib/c Supernovae (SN Ib/c) are nature's most magnificent explosions from massive stars. While GRBs launch relativistic jets, SN Ib/c are core-collapse explosions whose progenitors have been stripped of th ...
Tuesday Mar 8, 2011
2011 Hubble Fellows Symposium
Tom Soifer (n/a)
2011 Hubble Fellows Symposium
Brandon Kelly (Harvard-Smithsonian Center for Astrophysics)
Many aspects of accretion and jet physics scale simply with mass, suggesting that AGN should be scaled up versions of galactic black holes (GBHs). This is fortuitous because GBHs are easier to study as they are brighter and have many important phys ...
2011 Hubble Fellows Symposium
Debora Sijacki  (Harvard College Observatory )
I will present results from high-resolution hydrodynamical simulation which track the evolution of gravitationally recoiled super-massive black holes (BHs) in massive gas-rich galaxies. The presence of a massive gaseous disc allows recoiled BHs to ...
2011 Hubble Fellows Symposium
Lisa Winter  (University of Colorado)
While feedback from the central supermassive black hole likely affects the host galaxy evolution in the distant universe, we can not directly observe these processes at work. We can, however, easily observe the host galaxy and AGN properties of nea ...
2011 Hubble Fellows Symposium
Louis Strigari  (Stanford University)
Direct experimental searches for particle dark matter in our Galaxy are extremely sensitive to the highest velocity dark matter particles that are bound to the Galaxy. Combining theoretical predictions (N-body simulations) for the predicted spatial ...
2011 Hubble Fellows Symposium
Kevin Bundy (UC Berkeley)
The physical processes that regulate the growth of massive galaxies remain poorly understood. Globally, it is expected that such galaxies assemble at late times, but this basic prediction of hierarchical models is largely untested because cosmic vari ...
2011 Hubble Fellows Symposium
Julio Chaname (Carnegie DTM)
Establishing or ruling out, either through solid mass measurements or upper limits, the presence of intermediate-mass black holes (IMBHs) at the centers of star clusters would profoundly impact our understanding of problems ranging from the formation ...
2011 Hubble Fellows Symposium
Selma de Mink (Space Telescope Science Institute)
Star clusters are not as simple as we thought they were. Star-to-star abundance variations, multiple main sequences and giant branches reveal the presence of more than one stellar generations within globular clusters. It is thought that certain stars ...
2011 Hubble Fellows Symposium
Kristian Finlator  (University of California Santa Barbara)
I will consider what can be learned about the processes that dominate galaxy growth from two observable metrics of star formation. First, I will discuss the scatter in the relation between star formation rate and stellar mass. This encodes informat ...
2011 Hubble Fellows Symposium
Dusan Keres (UC Berkeley)
Theoretical models of galaxy formation predict that accretion of cold gas from the intergalactic medium is a major gas supply channel of galaxies. Observations of global star formation history and evolution of dense gas content of galaxies over cos ...
2011 Hubble Fellows Symposium
Evan Kirby (Caltech)
Last year, I presented the elemental abundance distributions of Milky Way dwarf satellite galaxies. These observation were based on Keck/DEIMOS medium-resolution spectroscopy. This year, I will present a simple chemical evolution model that can exp ...
2011 Hubble Fellows Symposium
Matthew Walker (Harvard College Observatory)
The scale-free hierarchy of cold dark matter (CDM) halos produced in cosmological N-body simulations implies the existence of scores of completely dark 'subhalos' (and 'sub-subhalos', etc.). One of very few observable signatures of such halos would ...
2011 Hubble Fellows Symposium
Ryan Keisler (University of Chicago)
Increasingly precise measurements of the cosmic microwave background (CMB) will strongly test our assumptions about the physics of the early universe. Does the primordial helium abundance inferred from the CMB agree with that predicted by BBN? Were ...
2011 Hubble Fellows Symposium
David Law (UCLA)
I will describe some results from our recent HST/WFC3 rest-frame optical imaging survey of star-forming galaxies in the redshift range 1.5 < z < 3.5. With 42 orbits of F160W imaging distributed amongst 10 fields, our survey covers ~ 65 square arcmi ...
2011 Hubble Fellows Symposium
Pascal Oesch (UC Santa Cruz)
Over the past year and a half, the refurbished HST has revolutionized z>6 galaxy science as it gained ~40x higher efficiency to observe in the near-IR with the WFC3/IR camera. This has allowed us to definitely push the observational frontier of galax ...
2011 Hubble Fellows Symposium
Ryan Quadri  (Carnegie Observatories)
It has long been known that galaxies with little or no ongoing star formation (SF) primarily occupy dense environments at z~0. Recently significant work has gone into understanding how the relationship between galaxy properties and environment evol ...
2011 Hubble Fellows Symposium
Naveen Reddy (National Optical Astronomy Observatory)
I review recent evidence that suggests that the dust corrections applied to high-redshift galaxies are strongly dependent on the age of the stellar population, such that relatively young galaxies at high redshift appear to follow a steeper UV dust ...
2011 Hubble Fellows Symposium
Beth Reid  (n/a)
No description found.