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2022 53rd Annual DDA Meeting Schedule

2022 53rd Annual Meeting of the DDA

Flatiron Institute, Manhattan NY

Oral Presentations

All times are local time (EDT, UTC-4)

Monday, April 25th

Introduction and Announcements
Dan Tamayo, Kathryn Johnston, Ruth Murray-Clay
SOC, LOC and DDA Chairs
8:00 - 8:10

Disequilibrium in the Galactic Disk
Chair: Frank van den Bosch
Slack Chair: Thomas Donlon
8:00 - 9:00

8:10 Jason Hunt Flatiron Institute   A Milky Way in motion: Dealing with dynamical disequilibria
8:20 Uddipan Banik Yale University   Phase-space spirals as probes of perturbed, out-of-equilibrium disk galaxies
8:30 Christopher Carr Columbia University   Stellar Migration in the Milky Way's Disc from Encounters with the Sagittarius Dwarf Galaxy (virtual)
8:40 Lekshmi Thulasidharan University of Wisconsin   Evidence of a vertical kinematic oscillation beyond the Radcliffe Wave
8:50 Peter Craig Rochester Institute of Technology   Building an Acceleration Ladder with Tidal Streams and Pulsar Timing
Star Clusters
Chair: Zephyr Penoyre
Slack Chair: Mor Rozner
9:00 Lu Li Shanghai Astronomical Observatory   Modeling open clusters in the CMD: binaries, mass function, and dynamical evolution (virtual)
9:10 Anna Parul University of Alabama   Flowing at Birth: A Dynamical Investigation of the Young Pisces-Eridanus Stream
9:20 Vaclav Pavlik Indiana University   Effects of radially anisotropic velocity distribution on the dynamics of star clusters

Dynamics Beyond the Main Sequence
Chair: Mor Rozner
Slack Chair: Michelle Vick

9:30 Christopher O'Connor Cornell University   The comet bombardment rate of solitary white dwarfs
9:40 Catriona McDonald University of Warwick   Binary asteroid scattering around white dwarfs
9:50 Samuel Grunblatt American Museum of Natural History, Flatiron Institute   Probing planetary architecture evolution with post-main sequence planets
Morning Coffee Break
10:00 - 10:30
Planetary Transactions of Angular Momentum
Chair: Jiayin Dong
Slack Chair: Sarah Millholland
10:30 Juliette Becker Caltech   Producing Moderate Stellar Obliquity through Planet Formation in Broken, Misaligned Protoplanetary Disks
10:40 Malena Rice Yale University   Origins of Hot and Warm Jupiters from the Stellar Obliquity Distribution (2020 Duncombe)
10:50 Andrew Langford Notre Dame University   A Dynamical Systems Theory Approach to Circumbinary Orbital Dynamics (virtual)
11:00 Chen Chen Georgia Institute of Technology   Mutual Inclination of Ultra-Short-Period Planets with Time Varying Stellar J2-moment (virtual)
11:10 Nathaniel Moore Georgia Institute of Technology   Formation History of HD106906 and the Vertical Warping of Debris Disks by an External Inclined Planetary Companion
11:20 Laetitia Rodet Cornell University   The impact of stellar clustering on the observed multiplicity of super-Earth systems: outside-in cascade of orbital misalignments initiated by stellar flybys
11:30 Santiago Torres University of California, Los Angeles   Raining Rocks: Collision, capture and ejection rates of comets in planetary systems

Chair: Matija Cuk
Slack Chair: Kat Volk

11:40 Robert Jacobson Jet Propulsion Laboratory   Tidal Dissipation in the Saturnian System
11:50 Janosz Dewberry Caltech, Canadian Institute for Theoretical Astrophysics   Dynamical Tidal Love Numbers of Rapidly Rotating Planets and Stars

Binary Stars
Chair: Maddie Lucey
Slack Chair: Laetitia Rodet

1:00 Zephyr Penoyre Columbia University   The Astrometric Contribution of Unresolved Stellar Companions in Gaia
1:10 Hsiang-Chih Hwang Institute for Advanced Study   Eccentricity of wide binary stars
1:20 Chris Hamilton Institute for Advanced Study   The eccentricity distribution of wide binaries in the Galaxy

Advances in Theory and Numerics for Galactic Dynamics
Chair: Robyn Sanderson
Slack Chair: Farnik Nikakhtar

1:30 Tomer Yavetz Columbia University   Observing Fundamental Dynamics in the Milky Way: Stream Morphologies, Separatrices, and Dark Matter Potentials
1:40 Frank van den Bosch Yale University   Dynamical Friction, Core Stalling & Dynamical Buoyancy
1:50 Martin Weinberg University of Massachussetts, Amherst   A new instability in dark-matter halos
2:00 Alexander Johnson Columbia University   Coupling Basis Function Expansion with Multi-Channel Singular Spectrum Analysis: a Powerful Toolkit for Dynamical Systems.
2:10 Leandro Beraldo e Silva University of Michigan   Collisionless gravitational systems: discrete or not discrete? - That's the question

Poster pops
Chair: Dan Tamayo
2:20 - 2:30

Afternoon Coffee Break
2:30 - 3:00

Special Session: Modern Theories of Planetesimal Formation
Chair: Seth Jacobson
Slack Chair: Matthew Hedman
3:00 Rixin Li Cornell University   Thresholds for Planetesimal Formation by the Streaming Instability
3:12 Chao-Chin Yang University of Nevada, Las Vegas   The Streaming Instability with Multiple Dust Species in Protoplanetary Disks
3:24 Jacob Simon Iowa State University   The Formation of Planetesimals by the Streaming Instability
3:36 Wesley Fraser

Herzberg Institute of Astrophysics

  Pebble Cloud Collapse, a Revolution in Planetesimal Formation (virtual)
3:48 Michele Bannister University of Canterbury   Interstellar planetesimals as diagnostics of galactic star-formation history (virtual)
4:00 Jackson Barnes Michigan State University   The Role of Particle Contact Physics in Planetesimal Formation
4:10 Cristiano Longarini

Università Degli Studi di Milano

  The dynamical role of drag force in gravitational instability: a path to form planetary cores in young protostellar discs
4:20 Natascha Manger Flatiron Institute   Suppression of collision velocities in particle-laden protoplanetary disk turbulence

DDA Initiatives Recap and Discussion
Juliette Becker & Dan Tamayo
4:30 - 5:00

Welcome Reception

Tuesday, April 26th

Introduction and Announcements
Dan Tamayo, Kathryn Johnston, Ruth Murray-Clay
SOC, LOC and DDA Chairs
8:00 - 8:10

Binary Asteroids and Radiation Forces
Chair: Rogerio Deienno
Slack Chair: Rixin Li
8:10 - 9:00

8:10 Jorge Perez-Hernandez

Telespazio Germany GmbH

  Non-zero Yarkovsky acceleration for near-Earth asteroid (99942) Apophis (2020 Duncombe)
8:20 Matija Cuk SETI Institute   Near-Critical Rotation of Binary Asteroid Primaries
8:30 Alex Meyer University of Colorado, Boulder   Modeling the Chaotic Dynamics of Binary Asteroid 1991 VH
8:40 Ryota Nakano Auburn University   A new binary-YORP effect model combining full two rigid body dynamics and three-dimensional thermal evolution
8:50 Harrison Agrusa University of Maryland   Predictions for the Dynamical State of the Didymos Binary System Before and After the DART Impact

Cosmological footprints in Local Group dynamics
Chair: Farnik Nikakhtar
Slack Chair: Juan Guerra
9:00 - 10:00

9:00 Scott Lucchini

University of Wisconsin

  The Magellanic Stream at 20 kpc: A New Orbital History for the Magellanic Clouds (2022 Duncombe)
9:10 Katie Chamberlain University of Arizona   Implications of the travel velocity of the Milky Way on Local Group mass estimates from the Timing Argument
9:20 Jay Baptista Yale University   Orientations of Dark Matter Haloes in CDM and SIDM Latte Galaxies (virtual)
9:30 Zhaozhou Li Hebrew University of Jerusalem   Modeling the Response of Dark Matter Halos to Gas Ejection (virtual)
9:40 Andreia Jessica Carrillo Durham University   Can we really pick and choose? Benchmarking various selections of accreted halo stars in observations with simulations (virtual)
9:50 Elise Darragh-Ford Stanford University   Understanding the Impact of Formation History on the Dynamical Distribution of Substructure using the "Milky Way"est Simulation Suite

Morning Coffee Break
10:00 - 10:30

Dynamics Beyond Neptune
Chair: William Oldroyd
Slack Chair: Sam Hadden
10:30 - 12:00

10:30 Konstantin Batygin Caltech   The Stability Boundary of the Distant Scattered Disk
10:40 Matthew Belyakov Caltech   The Stability Boundary of the Scattered Disk: Octupole and Beyond
10:50 Brett Gladman University of British Columbia   Secular free inclinations in the main Kuiper Belt (virtual)
11:00 Samantha Lawler University of Regina   The Populations of Plutinos and Other Resonant TNOs in the Distant Solar System (virtual)
11:10 Kathryn Volk University of Arizona   Close enough? How variations in the giant planets & final orbits in migration simulations affect predicted resonant transneptunian populations
11:20 Arcelia Hermosillo Ruiz University of California, Santa Cruz   Constraints on Migration Scenarios of Neptune Due to Stochasticity (2021 Duncombe)
11:30 Alexander Zderic University of Colorado, Boulder   Spontaneous Symmetry Breaking in the Primordial Scattered Disk
11:40 Arnav Das Caltech   On the secular dynamics of putative astrophysical disk in the outer solar system (virtual)
11:50 Yukun Huang University of British Columbia   A Rogue Planet Populated the Distant Kuiper Belt (virtual)

Lunch Break
12:00 - 1:00

Mapping and modeling the Milky Way's tidal streams
Chair: Elena D'Onghia
Slack Chair: Farnik Nikakhtar
1:00 - 2:00

1:00 Shifra Mandel Columbia University   Unlocking the History of Galaxy Mergers Through the Automated Analysis of Tidal Debris Substructures
1:10 Khyati Malhan MPIA, Heidelberg   The Global Dynamical Atlas of the Milky Way mergers: Processing the ESA/Gaia dataset using state-of-the-art algorithms (virtual)
1:20 Thomas Donlon Rensselaer Polytechnic Institute   Identifying the Multiple Radial Mergers in the Local Stellar Halo with Chemodynamics
1:30 Nora Shipp Massachusetts Institute of Technology   Too Big to Fail? 6D Stellar Streams in the Milky Way and Cosmological Simulations
1:40 Jacob Nibauer Princeton University   Charting the Galactic Acceleration Field with Stellar Streams -- A Flexible Model Independent Approach
1:50 Nondh Panithanpaisal University of Pennsylvania   Using Tidal Streams To Constrain Halo Minor Axis

Near-Earth Objects: From Asteroids to Meteoroids
Chair: Harrison Agrusa
Slack Chair: Matija Cuk

2:00 Althea Moorhead NASA Marshall Space Flight Center   Modeling the meteoroid environment far from the ecliptic plane (virtual)
2:10 Matthew Tiscareno SETI Institute   The effects of comet ejection characteristics on meteoroid stream cross-section profiles
2:20 Oscar Fuentes Muñoz University of Colorado, Boulder   Obliquity evolution of NEOs due to planetary flybys and YORP (virtual)
2:30 Jose Castro University of Arizona   Earth's Quasi-satellite Kamo'oalewa's Possible Origin as Lunar Ejecta (virtual)
2:40 Travis Yeager Lawrence Livermore National Laboratory   Early results from the MEGASIM: Multitudinous Earth Greek (not Trojan) Asteroid SIMulation (virtual)
2:50 Daniel Scheeres University of Colorado, Boulder   Limits on Energy and Angular Momentum in the Full N-Body Problem (virtual)

Afternoon Coffee Break
3:00 - 3:30

Rubin Prize Talk
Ann-Marie Madigan

Chair: Dan Tamayo
Slack Chair: Juliette Becker

Brouwer Prize Talk
Amina Helmi

Chair: Ruth Murray-Clay
Slack Chair: Kathryn Volk

Mentoring Event
Juliette Becker
5:00 - 6:00

Wednesday, April 27th

Introduction and Announcements
Dan Tamayo, Kathryn Johnston, Ruth Murray-Clay
SOC, LOC and DDA Chairs
8:00 - 8:10

Special Session: Compact Object Binaries I: AGN Disk Environments
Chair: Sanaea Rose
Slack Chair: Yubo Su

8:10 Yihan Wang Stony Brook University   Symmetry breaking in dynamical encounters in the disks of active galactic nuclei
8:20 Jiaru Li Cornell University   Long-term Evolution of Tightly-Packed Stellar Black Holes in AGN Disks: Formation of Merging Black-Hole Binaries via Close Encounters
8:30 Hareesh Gautham Bhaskar Georgia Institute of Technology   Blackhole mergers through evection Resonances
8:40 Gongjie Li Georgia Institute of Technology   Spin Variations of Black Hole Binaries in AGN Disks
8:50 Gaia Fabj University of Heidelberg   Star-Disk Interactions in Active Galactic Nuclei (virtual)
Poster Pops
Chair: Sanaea Rose

Special Session: Compact Object Binaries II: Cluster Environments
Chair: Gongjie Li
Slack Chair: Samuel Grunblatt

9:10 Xian Chen Peking University   Distortion of Gravitational Wave Signals by Astrophysical Environments (virtual)
9:20 Sanaea Rose University of California, Los Angeles   Collisions in a Galactic Nucleus: Implications for Compact Object Formation and Gravitational Wave Sources
9:30 Mor Rozner Technion   Binary evolution, gravitational-wave mergers and explosive transients in multiple-populations gas-enriched globular-clusters (2022 Duncombe)
9:40 Stefano Torniamenti University of Padova   Formation channels of binary black hole mergers in young star clusters (virtual)
9:50 Johan Samsing Niels Bohr Institute   Distinguishing Dynamical Formation Channels Apart Using Burst Timing

Morning Coffee Break
10:00 - 10:30

Dynamical Interactions in Multi-Planet Systems
Chair: Laetitia Rodet
Slack Chair: Christopher O'Connor
10:30 - 11:30

10:30 Sarah Millholland Princeton University   Edge-of-the-Multis: Evidence for Truncation of the Outer Architectures of Compact Multiple-Planet Systems
10:40 Thea Faridani University of California, Los Angeles   Stable or Not: Constraining the Stability of Hidden Super-Short Period Planets (virtual)
10:50 Spencer Wallace University of Washington   An In-Situ Formation Model for Systems of Tightly-Packed Inner Planets (virtual)
11:00 Ryleigh Davis Caltech   Rapid Dynamical Chaos in a Short Period Multi-planet System
11:10 Yubo Su Cornell University   Dynamics of Colombo's Top: Non-Trivial Oblique Spin Equilibria of Super-Earths in Multi-planetary Systems (2020 Duncombe)
11:20 Jiayin Dong Pennsylvania State University   Two Case Studies of Warm Jupiters Suggesting Different Origins (2021 Duncombe)

History of the Early Solar System
Chair: Konstantin Batygin
Slack Chair: Gongjie Li
11:30 - 12:00

11:30 Matthew Clement Carnegie Institute of Washington   Mercury and the inner solar system sculpted by Earth and Venus' outward migration
11:40 Rogerio Deienno Southwest Research Institute   Effects of Jupiter large scale gas-driven migration on the inner solar system
11:50 Seth Jacobson Michigan State University   Venus: What does it mean to have no moon

Lunch Break
12:00 - 1:00

Special Session: Astro 2020 Decadal, State of the Profession
Kathryn Johnston, Kathryn Daniel, Gurtina Besla
Slack Chair: Ryleigh Fitzpatrick

Afternoon Coffee Break
Public Program
American Museum of Natural History Planetarium

Jackie Faherty

Thursday, April 28th

Introduction and Announcements
Dan Tamayo, Kathryn Johnston, Ruth Murray-Clay
SOC, LOC and DDA Chairs
8:00 - 8:10

Galactic Bars
Chair: Jason Hunt
Slack Chair: Zephyr Penoyre
8:10 - 9:00

8:10 Maddie Lucey University of Texas   Constraining the length and pattern speed of the Milky Way bar from direct orbit integration (2022 Duncombe)
8:20 Sioree Ansar Indian Institute of Astrophysics, Bangalore, Flatiron Institute   Bar Formation and Destruction in the FIRE2 Simulations (virtual)
8:30 Binod Bhattarai University of California, Merced   Resonance Sweeping in Barred Galaxy Simulations
8:40 Shashank Dattathri University of Michigan   Deprojection and dynamical modeling of barred galaxies
8:50 Elena D'Onghia University of Wisconsin   Are dark gaps in barred galaxies a signature of bar corotation?

Numerics and Methods for Planetary Dynamics
Chair: Michelle Vick
Slack Chair: Joseph A'Hearn
9:00 - 10:00

9:00 Stanley Dermott University of Florida   A new method of searching for ghost families in the asteroid belt
9:10 Mohamad Ali-Dib New York University, Abu-Dhabi   A machine-generated catalogue of Charon's craters and implications for the Kuiper belt (virtual)
9:20 William Oldroyd Northern Arizona University   A Statistical Approach to Optimizing Orbit Constraints for Directly Imaged Exoplanets
9:30 David Hernandez Harvard-Smithsonian Center for Astrophysics   Stepsize errors in the N-body problem: discerning Mercury's true possible long-term orbits
9:40 Samuel Hadden Canadian Institute for Theoretical Astrophysics   Celestial mechanics with the celmech code
9:50 Daniel Tamayo Princeton University   Celmech II: A universal integrable model for mean motion resonances in closely packed systems

Morning Coffee Break
10:00 - 10:30

Planetary Rings
Chair: Maryame El Moutamid
Slack Chair: Rogerio Deienno
10:30 - 11:00

10:30 Matthew Hedman University of Idaho   Using disk structures as historical records: A case study involving Saturn's rings.
10:40 Joseph A'Hearn University of Idaho   Ring Seismology of the Ice Giants Uranus and Neptune
10:50 Daniel Sega University of Colorado, Boulder   The motion of satellite self-gravity wakes under the effects of tidal forces and shear: a case study of the Rings of Saturn.

Members' Meeting
Ruth Murray-Clay
Slack Chair: Sarah Millholland
11:00 - 12:00

Lunch Break
12:00 - 1:00

Resonant Dynamics and Consequences, Plus Disks!
Chair: Samuel Hadden
Slack Chair: Jiayin Dong
1:00 - 2:00

1:00 Max Goldberg Caltech   Architectures of Compact Super-Earth Systems Shaped by Instabilities (2021 Duncombe)
1:10 Nader Haghighipour University of Hawaii   Diversity of resonances in multi-planet resonant chains is a natural outcome of planet formation (virtual)
1:20 Jordan Laune Cornell University   Apsidal Architecture of Planetary Systems in Mean Motion Resonance
1:30 Roberto Tejada Arevalo Princeton University   Stability Constrained Characterization of the 23 Myr-old V1298 Tau System: Do Young Planets Form in Mean Motion Resonance Chains? (2022 Duncombe)
1:40 Maryame El Moutamid Cornell University   Three-Body Resonances in the Saturnian System
1:50 Marguerite Epstein-Martin Columbia University   Generating stellar obliquities in systems with broken protoplanetary disks (virtual)
2:00 Michelle Vick Northwestern University   Modeling the Irradiation Instability of Protoplanetary Disks

Dynamics near supermassive black holes
Chair: Ann-Marie Madigan
Slack Chair: Janosz Dewberry
2:10 - 2:50

2:10 Aleksey Generozov Technion   Forming Young and Hypervelocity Stars in the Galactic Centre via Tidal Disruption of a Molecular Cloud
2:20 Denyz Melchor University of California, Los Angeles   Repeated tidal disruption events in supermassive black hole binaries
2:30 Makana Silva The Ohio State University   Dynamical perturbations around an extreme mass ratio inspiral near resonance (virtual)
2:40 Tatsuya Akiba University of Colorado, Boulder   The Beginning of an END (2021 Duncombe)

Analysis of equilibrium collisionless systems: power and peril
Chair: Chris Hamilton
Slack Chair: Natascha Manger
2:50 - 3:40

2:50 Farnik Nikakhtar University of Pennsylvania   Probing the Galactic Potential Using Optimal Transport Theory
3:00 Micah Oeur University of California, Merced   Orbital Torus Imaging on FIRE
3:10 Alexander Riley Texas A&M University   Velocity dipoles in the halos of FIRE simulated galaxies
3:20 Kaustav Mitra Yale University   Dynamical modelling of satellite galaxies to infer galaxy-halo connection and cosmology
3:30 Juan Guerra Yale University   Jeans modeling of Simulated Dwarf Satellites Around a Milky Way like Galaxy

Concluding Remarks
Chair: Ruth Murray-Clay

End of Meeting


Poster Presentations

Available all week

1 Yubo Su Cornell University Diminished Generation of Stellar Obliquities: The Angular Momentum Budget During Resonance Crossing
2 Matthias He Pennsylvania State University Debiasing the Minimum-Mass Extrasolar Nebula: Planet Multiplicity and the Diversity of Solid Density Profiles
3 Sachi Weerasooriya Texas Christian University Dancing Streams in Merging Halos: Effects of Major Mergers on Stellar Streams
4 Rixin Li Cornell University Hydrodynamical Evolution of Black-Hole Binaries Embedded in AGN Disks
5 Carrie Filion Johns Hopkins University Local Group Dynamics with the Subaru Prime Focus Spectrograph
6 Laetitia Rodet Cornell University On the Correlation between Hot Jupiters and Stellar Clustering: High-eccentricity Migration Induced by Stellar Flybys
7 Vaclav Pavlik Indiana University Environmental Effects on the Dynamical Evolution of Star Clusters in Turbulent Molecular Clouds
8 Hayden Foote University of Arizona Making Observational Predictions for the LMC's Dynamical Friction Wake
9 Jorge Perez-Hernandez Telespazio Germany GmbH LSIM: a cloud-based tool for lunar mission analysis and design
10 Arpit Arora University of Pennsylvania Subhalos-stream interaction in the presence of massive satellites.
11 Alex Meyer University of Colorado, Boulder Janus: A NASA SIMPLEx mission to explore two NEO Binary Asteroids
12 Jordan Laune Cornell University Differential Apsidal Precession in Mean Motion Resonant Planetary Systems
13 Christian Aganza University of California San Diego Probing Gaps in Globular Cluster Streams in External Galaxies with the Nancy Grace Roman Telescope