• 2022 Apr 07

# ITC Luncheon

12:30pm to 1:30pm

## Location:

Phillips

Diana Powell (Hubble), "Depletion of gaseous CO in protoplanetary disks via surface-energy-regulated ice formation"

David Hernandez (MPC Fellow), "Stepsize errors in the N-body problem: discerning Mercury’s true possible long-term orbits"

Rahul Kannan (ITC), "Probing reionization with multi-tracer line intensity mapping"

ITC Luncheons are sponsored by a generous donation from ITC Senior Member Dr. Eric Keto.

• 2022 Apr 07

# ITC Colloquium - Tamara Bogdanovic (Georgia Tech)

11:00am to 12:00pm

"From Kiloparsec Scales to a Merger: Properties of Dual AGNs that Become Gravitational Wave Sources"

Observational searches for dual active galactic nuclei (AGNs) at kiloparsec separations are crucial for understanding the role of galaxy mergers in the evolution of galaxies. In addition, kiloparsec-scale dual AGNs are the parent population of merging massive black hole (MBH) binaries. In this talk I will describe our recent efforts to quantify the observational properties of dual AGNs that are most likely to result in MBH mergers and emission of gravitational waves. I will...

• 2022 Mar 31

# ITC Luncheon

12:30pm to 1:30pm

## Location:

Phillips

Ana Maria Delgado (Harvard), "Modeling the galaxy-halo connection with machine learning"

Andrew Saydjari (Harvard), "Photometry on Structured Backgrounds: Local Pixelwise Infilling by Regression"

Rohan Naidu (Harvard), "The First Glimpse of the First Galaxies with the James Webb Space Telescope"

• 2022 Mar 31

# ITC Colloquium - Arjun Dey (NOAO)

11:00am to 12:00pm

## Location:

Zoom

"The DESI Survey and Galaxy Evolution: Lyman Alpha Emitters and the Andromeda Galaxy"

Abstract: The Dark Energy Spectroscopic Instrument has begun its 5-year mission to explore the universe both near and far and map out its expansion history. In addition to its primary cosmological goals, DESI will provide new insights into the formation and evolution of galaxies, as well as map out the dynamics of our Milky Way. I will describe the overall project and its data, and highlight two explorations: one on high-redshift galaxies; and the other on the Andromeda Galaxy, one of our...

• 2022 Mar 24

# ITC Luncheon

12:30pm to 1:30pm

Phillips
• 2022 Mar 22

# ITC Special Colloquium - Vasily Belokurov (Cambridge)

11:00am to 12:00pm

"From dawn till disk: Milky Way's turbulent youth revealed by the APOGEE+Gaia data”

Abstract:

We use accurate estimates of aluminium abundance provided as part of the APOGEE Data Release 17 and Gaia Early Data Release 3 astrometry to select a highly pure sample of stars with metallicity $-1.5\lesssim {\rm [Fe/H]}\lesssim 0.5$ born in-situ in the Milky Way proper. We show that the low-metallicity ([Fe/H]$\lesssim -1.3$) in-situ component that we dub Aurora is kinematically hot with an...

• 2022 Mar 10

# ITC Luncheon

12:30pm to 1:30pm

## Location:

Phillips

Speakers:

Karin Oberg (Harvard), "Organic Chemistry in Protoplanetary Disks"

Eric Koch (SMA Fellow), "Detailed neutral ISM kinematics in the Local Group galaxies and the need for synthetic observations"

Evan Bauer (CfA Fellow), “Mass Estimates for Hypervelocity Runaways from Thermonuclear Supernovae”

• 2022 Mar 10

# ITC Colloquium - Timothy Davis (Cardiff)

11:00am to 12:00pm

## Location:

Zoom

"Tracing out the darkness with cold gas: dynamically probing galaxy evolution"

In this talk I will describe how mapping the dynamics of gas clouds in the centre of galaxies can help us to constrain a wide range of astrophysical problems. From the enigmatic relation between galaxies and their supermassive black holes, to the suppression of star-formation in dying galaxies, the dynamics of cold gas provides an ideal probe that can help us make progress. I will show how parsec resolution observations can be used to estimate the masses of supermassive black holes in galaxies...

• 2022 Mar 03

# ITC Colloquium - Alis Deason (Durham)

11:00am to 12:00pm

## Location:

Zoom

“Dwarf galaxy stellar haloes”

The hierarchical nature of structure formation predicts that haloes grow by the aggregation of several lower-mass "clumps". A natural consequence of this process is the existence of an extended halo of stars surrounding galaxies, which is built up from the debris of destroyed lower mass objects. The nature of these haloes has been studied extensively from Milky Way to cluster-mass systems. However, the stellar haloes of dwarf galaxies have been given relatively little attention.  In this talk, I will discuss...

• 2022 Feb 24

# ITC Colloquium - Plamen Krastev (Harvard)

11:00am to 12:00pm

## Location:

Zoom
"AI for Gravitational Waves and Dense Matter"

The groundbreaking discoveries of gravitational waves from binary black-hole mergers and, more recently, coalescing neutron stars started a new era of Gravitational-Wave Astrophysics and revolutionized our understanding of the Cosmos. Deep learning algorithms, such as artificial neural networks, are already transforming many scientific and technological fields, and have also proven successful in gravitational-wave astrophysics for detection and parameter estimation of gravitational-wave signals from binary black holes. In...