Past Events

  • 2021 Apr 08

    ITC Colloquium - Brian Nord (FNAL)

    11:00am to 12:00pm

    Location: 

    Zoom
    "From galaxies to faces: recognizing the implications of Artificial Intelligence in astronomy and society"

    Abstract:  Artificial Intelligence (AI) refers to a set of techniques that rely primarily on the data itself for the construction of a quantitative model. AI has arguably been in development for three quarters of a century, but there has been a recent resurgence in research and application. This current (third) wave of AI progress is...

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  • 2021 Apr 01

    ITC Colloquium - Rodrigo Ibata (Université de Strasbourg)

    11:00am to 12:00pm

    Location: 

    Zoom

    "Learning the properties of our Galaxy with Stellar Streams"

    The Galactic halo is criss-crossed by long stellar streams that are probably the remnants of defunct globular clusters and dwarf galaxies. I will present the recent discoveries of these structures including several streams that can be traced back to well known halo features. While streams clearly inform us in a direct way about past accretions onto our Galaxy, their most promising property is that they allow us to measure the Galactic acceleration field and they may possibly allow us to reveal the presence of small-...

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  • 2021 Mar 18

    ITC Colloquium - Lisa Kaltenegger (Cornell)

    11:00am to 12:00pm

    Location: 

    Zoom
    "How to find life on exoplanets: Challenges, ideas and adventures"

    The first exoplanets orbiting in the temperate, Habitable Zone, have
    revolutionized the field of the search for life in the cosmos. With
    their discovery comes the question of how you can tell if there are
    signs of a life watching remotely. Where should we look in terms of
    wavelength, host star, planet size and mass - among many other.
  • 2021 Mar 11

    ITC Colloquium - Keivan Stassun & Marina Kounkel (Vanderbilt)

    11:00am to 12:00pm

    Location: 

    Zoom

    "Fundamental Stellar Astrophysics in the Gaia Era: A New Understanding of Local Stellar Populations "

    We begin with an overview of the precision stellar astrophysics enabled by the confluence of Gaia parallaxes with large-scale photometric and spectroscopic surveys. We then give examples of the new understanding of local Galactic structure that this has enabled, including in particular the detailed history of canonical star-forming regions, and the discovery of "stellar strings" reflecting the local conditions of recent star formation.  

  • 2021 Mar 04

    ITC Colloquium - Anna Schauer (U Texas Austin)

    11:00am to 12:00pm

    Location: 

    Zoom
    The formation of the first stars - environmental dependence and observational prospects
    --
    The first stars formed a few hundred million years after the Big Bang, starting the transition from the Dark Ages to Recombination. They are out of reach from current and planned facilities, and we rely on numerical methods to understand their properties. In this talk, I will focus on the galaxies that the first stars formed in: minihalos. Two large-scale effects -- Lyman-Werner radiation and streaming velocities -- affect these formation regions. With my large cosmological, hydrodynamical... Read more about ITC Colloquium - Anna Schauer (U Texas Austin)
  • 2021 Feb 18

    ITC Colloquium - Maya Fishbach (Northwestern)

    11:00am to 12:00pm

    Location: 

    Zoom
    "LIGO-Virgo’s Biggest Black Holes and the Mass Gap"


    Abstract: Models for black hole formation from stellar evolution robustly predict the existence of
    a pair-instability supernova mass gap in the range ~50 to ~120 solar masses. The binary
    black holes of LIGO-Virgo's first two observing runs supported this prediction, showing evidence
    for a dearth of component black hole masses above 45 solar masses. Meanwhile, among the
    30+ new observations from the third observing run, there are several black holes that appear to
    sit above the 45 solar mass limit. I will discuss how...

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  • 2021 Feb 11

    ITC Colloquium - Clara Sousa-Silva (MIT)

    11:00am to 12:00pm

    Location: 

    Zoom

    "Finding an Alien Biosphere with Computational Chemistry"

    At the edge of our present scientific frontier lies the question: “Can we identify the signs of life on an exoplanet?”. Establishing whether a planet is habitable, or inhabited, relies both on the observation of an exoplanet atmosphere and, crucially, its subsequent interpretation. This interpretation requires knowledge of the spectral behavior of every significant atmospheric molecule. However, though thousands of molecular candidates can contribute towards the spectrum of an atmosphere,...

    Read more about ITC Colloquium - Clara Sousa-Silva (MIT)

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