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2010 Spring Symposium Webcasts
Monday May 3, 2010
2010 Spring Symposium
Matt Mountain  (Space Telescope Science Institute)
No description found.
2010 Spring Symposium
Jason Kalirai, Massimo Robberto (Space Telescope Science Institute)
No description found.
2010 Spring Symposium
Jonathan Tan (Department of Astronomy, University of Florida)
I review our current understanding of the star formation process. I focus on the birth of massive stars, star clusters, the initial mass function, and the connection to kiloparsec and galactic-scale star formation laws.
2010 Spring Symposium
Cathie Clarke (Institute of Astronomy)
Recent years have seen the advent of simulations that, under the simplest assumption about the input physics, can model the formation of star clusters numbering many thousands of stars. Simulations on such scales thus have the dynamic range to captur ...
2010 Spring Symposium
Sally Oey (University of Michigan)
Massive stars are responsible for energetic feedback effects that drive evolutionary processes in star-forming galaxies. Radiative feedback is especially important because it is thought to be responsible for cosmic reionization, as well as ionization ...
2010 Spring Symposium
Remy Indebetouw (University of Virginia, Department of Astronomy)
Massive stars are the main agents responsible for evolution of the interstellar medium of galazies, and their subsequent star formation history. We would like to know how molecular clouds turn into stellar clusters, with what efficiency massive stars ...
2010 Spring Symposium
Chris Evans (UK ATC, Royal Observatory Edinburgh)
In this review I will highlight recent results from studies of 30 Doradus in terms of the feedback from stellar winds and ionizing fluxes, triggered star formation and ejected stars. These will be used to argue that 30 Dor provides us with an essenti ...
2010 Spring Symposium
Guido de Marchi  (European Space Agency)
We have undertaken a systematic study of pre-main-sequence (PMS) stars spanning a wide range of masses (0.5 - 4 Msolar), metallicities (0.1 - 1 Zsolar) and ages (0.5 - 30 Myr). We have already used new WFC3 and archival ACS data to identify and chara ...
2010 Spring Symposium
Giampaolo Piotto  (Universite di Padova, Depto di Astronomia)
For half a century it had been astronomical dogma that a globular cluster (GC) consists of stars born at the same time out of the same material, and this doctrine has borne rich fruit. In recent years, however, discoveries made largely with HST shatt ...
2010 Spring Symposium
Alvio Renzini (INAF-Osservatorio Astronomico di Padova)
The discovery of widespread multiple stellar populations in globular clusters has forced us to change dramatically our vision of these objects and of their formation. Especially intribuing has been the realization that some of these populations are s ...
2010 Spring Symposium
Selma de Mink  (Utrecht University)
Various features in the color magnitude diagrams of globular clusters indicate the presence of multiple stellar populations within one cluster differing in chemical composition and possibly age. It has been proposed that the more massive stars in the ...
2010 Spring Symposium
Enrico Vesperini  (Drexel University)
I will present the results of a study of the formation and dynamical evolution of multiple stellar populations in globular clusters. The results presented, based on an extensive set of hydrodynamical and N-body simulations, will include a discussion ...
2010 Spring Symposium
Carla Cacciari (INAF, Osservatorio Astronomico di Bologna)
The Gaia space project, planned for launch in 2012, is one of the ESA Cornerstone missions, and will produce an all-sky astrometric, photometric and spectroscopic survey of very high quality of all sources brighter than V=20 (about one billion object ...
2010 Spring Symposium
Eric Peng,Francesco Paresce,Andrea Kunder,Aaron Dotter,Michele Cignoni,Paul Goudfrooij,Iraklis Konstantopoulos,Chul Chung,Antonela Monachesi,Kirsten Howley,Ben Sargent,Elena Sabbi,Michael Rich,Thomas Bensby,Rosa Gonzalez Lopezlira,Antonio Montero Dorta (Various Institutions)
No description found.
2010 Spring Symposium
Paul Goudfrooij, Nolan Walborn  (STScI)
No description found.
Tuesday May 4, 2010
2010 Spring Symposium
Oleg Gnedin (University of Michigan, Department of Astronomy)
Modern hydrodynamic simulations of galaxy formation are able to predict accurately the rates and locations of the assembly of giant molecular clouds in early galaxies. These clouds could host star clusters with the masses and sizes of real globular c ...
2010 Spring Symposium
Rupali Chandar  (Department of Physics and Astronomy)
There is now strong evidence that most stars form in clusters, rather than individually. This means that most stars that we observe in galaxies have, at some point, lived in a star cluster, and that the life cycle of star clusters tells us about the ...
2010 Spring Symposium
Harvey Richer (University of British Columbia)
WFC3 on HST recently observed the globular cluster 47 Tuc for 60 orbits in the J and H bands. We present first results from these observations.
2010 Spring Symposium
Dean McLaughlin (Keele University)
tar clusters in tidal fields dissolve on Gyr timescales as a result of stellar escape driven by internal two-body relaxation. This evaporation process can have consequences for the internal density and velocity profiles of individual clusters, it has ...
2010 Spring Symposium
Nate Bastian  (IoA Cambridge / University of Exeter)
I will review the observational evidence and current models for the rapid dissolution of stellar clusters during the first few Myr after their formation. I will address the fraction of stars that are formed in "clusters", both locally and in extreme ...
2010 Spring Symposium
Brendan Mullan,David Radburn-Smith,Joel Roediger,Erik Hoversten,Tim-Oliver Husser,Michael Rich,Thomas Puzia,Michelle Collins,Judy Cheng,Marina Rejkuba,David Nidever,Brad Whitmore,Mark Fardal,Aparna Maybhate,Steve Majewski (Various)
No description found.
2010 Spring Symposium
Kathryn Johnston (Columbia University)
Stars that make galaxies are expected to form within dark matter halos that are themselves growing through gravitational collapse and mergers. This scenario implies a rich interplay between the simple collisionless dynamics of the dark matter and the ...
2010 Spring Symposium
Steve Majewski  (University of Virginia, Department of Astronomy)
No description found.
2010 Spring Symposium
David Martinez-Delgado (Max-Planck Institut fur Astronomie)
Within the hierarchical framework for galaxy formation, minor merging and tidal interactions are expected to shape large galaxies to this day. As part of a pilot survey, we have carried out ultra-deep, wide-field imaging of some isolated spiral galax ...
2010 Spring Symposium
Annette Ferguson (Institute for Astronomy, Royal Observatory)
Unique insight into formation and evolution of large galaxies can be gained from studies of our nearest spiral neighbours, M31 and M33. I will discuss some recent results regarding the assembly history of these systems derived from deep photometric s ...
2010 Spring Symposium
Alan McConnachie (Dominion Astrophysical Observatory)
I will present the latest results from the Pan-Andromeda Archaeological Survey (PAndAS) that is contiguously surveying >300 square degrees surrounding M31 and M33, reaching to a maximum projected radius of 150kpc and 50kpc from the centers of these g ...
2010 Spring Symposium
Marla Geha (Yale University)
Dwarf elliptical (dE) galaxies account for more than 75% of objects brighter than MV < -14 in nearby galaxy clusters, yet the origin of this galaxy class remains controversial. Understanding the dE galaxy class will provide insight into the assembly ...
2010 Spring Symposium
Chaired By Jason Kalirai (Space Telescope Science Institute)
Interactive Discussion Chaired By Jason Kalirai
Wednesday May 5, 2010
2010 Spring Symposium
Rodrigo Ibata  (Observatoire Astronomique Universite de Strasbourg)
I will present an analysis of the structure and substructure of the nearby edge-on galaxy NGC 891, based on deep HST/ACS images and an ultra-deep ground-based survey with Subaru/SuprimeCam. These observations resolve stars in the upper two magnitudes ...
2010 Spring Symposium
Julianne Dalcanton  (University of Washington)
The optical and infrared colors and luminosities of a galaxy depend sensitively on the exact mixture of its constituent stars. Unfortunately, broad-band integrated photometry and luminosity-weighted spectra provide only coarse indicators of the age a ...
2010 Spring Symposium
Various Speakers (Various Institutions)
No description found.
2010 Spring Symposium
Santi Cassisi  (INAF, Osservatorio Astronomico di Collurania)
During this last decade our knowledge of the evolutionary properties of stars has significantly improved. This result has been achieved thanks to our improved understanding of the physical behavior of stellar matter in the thermal regimes characteris ...
2010 Spring Symposium
Gustavo Bruzual  (CIDA)
I will present a summary of recent advances in the fields of stellar evolution, stellar model atmospheres, and stellar spectral libraries, which allow us to build more realistic stellar population synthesis models than those available up to now. Appl ...
2010 Spring Symposium
Charlie Conroy  (Princeton)
In this talk I will discuss the most important uncertainties in SPS modeling, including (time permitting) advanced stellar evolutionary phases, dust attenuation, the IMF, and the spectral libraries. I will explain in which contexts these uncertaintie ...
2010 Spring Symposium
Javier Rodriguez, Morgan Fouesneau, Elysse Voyer ,Gregory Ruchti (Various Institutions)
2010 Spring Symposium
Danilo Marchesini  (Tufts University)
Our knowledge of the properties of galaxies at intermediate redshifts (z=1-4) is mostly based on the modeling of the observed spectral energy distributions (SEDs) of galaxies from broad-band photometry using stellar population synthesis models. This ...
2010 Spring Symposium
Sandra Savaglio  (Max-Planck Institute for Extraterrestrial Physics)
Many galaxies hosting gamma-ray bursts (GRBs) have high star formation rate and low stellar mass. However, the sample might be biased, as a large fraction of GRBs is dark in the optical (no precise locationzation and unique identification of the host ...
2010 Spring Symposium
Genevieve Graves  (UC Berkeley)
To zeroth order, galaxies form a one-dimensional family in which their observed properties---morphology, color, metallicity, environment, central black hole masses---all scale with their mass. This makes it difficult to disentangle the critical prope ...
2010 Spring Symposium
Pavel Kroupa  (Argelander Institute for Astronomy, University of Bonn)
The stellar IMF is the distribution function of stellar masses born together in one causally connected event within a spatial region of not more than a few pc in extend. It cannot be measured in any system, but statistical methods combined with corre ...
2010 Spring Symposium
Robert O’Connell  (University of Virginia)
The Wide Field Camera 3 was installed in the Hubble Space Telescope during the May 2009 servicing mission. I will describe some of the early studies that have taken advantage of its extended wavelength coverage (0.2-1.7um), large suite of specialized ...
Thursday May 6, 2010
2010 Spring Symposium
Timothy Beers  (Michigan State University)
The lowest metallicity stars in the Galaxy preserve our best snapshots of the chemical elements formed in the Big Bang, and in the very first generations of (presumably) massive stars that theory tells us formed shortly thereafter. Over the past seve ...
2010 Spring Symposium
Evan Kirby  (Caltech)
Large spiral galaxies have to come from somewhere, and the currently prevailing winds prefer the accretion of satellite galaxies to monolithic collapse. Although the accreted galaxies are now dissolved, some of their counterparts still exist today in ...
2010 Spring Symposium
Pascale Jablonka  (Ecole Polytechnique Federale de Lausanne (EPFL)
I will present new results from high resolution spectroscopy of individual stars in classical dwarf spheroidal galaxies (dSph) and from chemo-dynamical simulations. I will show how the first generations of stars in dSphs compare to ones in the Milky ...
2010 Spring Symposium
Scott Trager  (Kapteyn Astronomical Institute, University of Groningen)
Using a powerful combination of stellar population models and hierarchical galaxy formation models, I examine what stellar population parameters (ages and star formation histories, metallicity, mass-to-light ratios, etc.) can be recovered from curren ...
2010 Spring Symposium
Mariska Kriek  (Princeton University, Department of Astrophysical Sciences)
Similar to the situation at low redshift, the properties of galaxies beyond z=2 are strongly correlated. Massive galaxies at this epoch clearly separate into two classes: the large star-forming galaxies that form the blue cloud, and the smaller quies ...
2010 Spring Symposium
Nicholas Bond  (Rutgers University)
We present a rest-frame optical and rest-frame ultraviolet analysis of stellar populations in 160 2 < z < 3.5 Star-Forming Galaxies (SFGs) in the Extended Chandra Deep Field South, including 39 Lyman Alpha Emitters. Using Hubble Space Telescope image ...
2010 Spring Symposium
Garth Illingworth  (University of California, Santa Cruz)
The recent extraordinarily deep WFC3/IR data from the HUDF09 program has dramatically expanded our insight into the galaxy population at z~7-8-9, and given us constraints on the population at z~10. Over 100 z~7-8 galaxies have now been detected. Thes ...
2010 Spring Symposium
Caryl Gronwall  (Pennsylvania State University)
We have used the Mosaic camera of the CTIO 4-m telescope to conduct deep, narrow-band surveys of Ly-alpha Emitting Galaxies (LAEs) in the Extended Chandra Deep Field-South over the redshift ranges 3.08 < z < 3.15 and 2.04 < z < 2.08. Our survey cover ...
2010 Spring Symposium
Jason Tumlinson (STScI)
No description found.
2010 Spring Symposium
Rosie Wyse  (Johns Hopkins University, Physics and Astronomy Department)
Conference Summary