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2020 Virtual DDA Meeting Schedule

2020 Virtual 51st Annual Meeting of the DDA

Q&A/Discussion Webinar Schedule

All presentations (except the plenary prize lectures) are pre-recorded and are available for viewing on the registrant-only DDA meeting website. The sessions listed below are for Q&A and discussion only (with the exception of the Prlenary Session), so participants should watch the talks ahead of time! 

General Webinar connection information is available on that website, and we will contact presenters with special instructions for your session.

We will collect some discussion questions from the meeting Slack workspace, and the discussions will be recorded and posted on the website the next day to ensure that attendees in all time zones can participate!

You can download a PDF with all the abstracts here.

(You can register here anytime!)

All times below are EDT (UTC-4)

Monday, August 3

10:50 AM EDT  Kat Volk, SOC and DDA chair Introduction and announcements
11:00 AM - 11:35 AM EDT

Special Session

The Main Belt: A Complex Dynamical System (Session 100)

Chairs: Bojan Novakovic and Apostolos Christou

  Renu Malhotra Lunar and Planetary Laboratory, The University of Arizona (Invited) Asteroid belt dynamics and statistics
  Federica Spoto CfA | Harvard & Smithsonian (Invited) Asteroid families: a powerful tool to understand our Solar System
  Mikael Granvik University of Helsinki / Luleå University of Technology (Invited) Source regions of meteorites and near-Earth asteroids
  Stanley Dermott University of Florida A new observational constraint on the Yarkovsky-driven mobility of main belt asteroids
  Apostolos Christou Armagh Observatory and Planetarium Orbital mobility of asteroids in the Inner Main Belt: A closer look at gravitational diffusion
  John Noonan Lunar and Planetary Laboratory, University of Arizona Evaluating the Dynamical Feasibility of (3) Juno as a Parent Body of the H Chondrites
11:35 AM - 12:05 PM EDT

Planetary System Populations (Session 101)

Chairs: Darin Ragozzine 

  Fred Adams University of Michigan A Solution to the Peas-in-a-Pod Problem for Extrasolar Planetary Systems
  Matthias He The Pennsylvania State University The Intrinsic Architectures of Planetary Systems: Correlations of AMD-Stable Systems
  Emily Safsten The Pennsylvania State University Nature vs. nurture: a Bayesian framework for assessing apparent correlations between planetary orbital properties and stellar ages
  Jiayin Dong The Pennsylvania State University Unraveling Warm, Large Exoplanet (WaLE) Origins From TESS Observations
  Kyriaki Antoniadou Aristotle University of Thessaloniki Kepler and K2 systems dynamically unveiled via periodic orbits (Poster)
  Srisurya Yadavalli Georgia Institute of Technology On the Seasonal Flux and Temperature Variations on Circumbinary Planets
1:00 PM - 2:30 PM EDT Plenary Session (Session 102):
Vera Rubin Early Career Prize Lecture
Dirk Brouwer Prize Lecture
Chair: Kat Volk
1:00 Jo Bovy University of Toronto What I have learned about the Milky Way’s dynamics from Gaia so far
1:45 Fred Rasio Northwestern University Forming Gravitational Wave Sources through Stellar Dynamics

Tuesday, August 4

9:30 AM - 10:00 AM EDT

Stellar Kinematics in the Milky Way and Complex Stellar Clusters (Session 200)

Chair: Heidi Jo Newberg

  Eric Mendelsohn Rensselaer Polytechnic Institute N-Body Simulations with MilkyWay @ home
  Nondh Panithanpaisal University of Pennsylvania Stellar Streams and Their Progenitors in MW-like Simulations
  Thomas Donlon Rensselaer Polytechnic Institute A Recent Major Radial Merger Leaves Shells in the Milky Way
  Drona Vargya University of Pennsylvania Nemesis Stars in Dynamic Time-Dependent Galactic Potentials
  Maria Tiongco University of Colorado Complexities in the Kinematical Evolution of Globular Clusters
  Hangci Du Tsinghua University Kinematics of RR Lyrae stars in the Galactic bulge with OGLE-IV and Gaia DR2
10:00 AM - 10:15 AM EDT

The Solar System in the Galaxy: Interstellar objects and stellar flybys (Session 201)

Chair: Darryl Seligman

  Amir Siraj Harvard University Identifying Interstellar Objects Trapped in the Solar System through Their Orbital Parameters
  Marvin Morgan University of Pennsylvania Close Encounters of Stars in the Solar Neighborhood (Poster)
  Tim Hallatt McGill University The Dynamics of Interstellar Asteroids and Comets within the Galaxy: An Assessment of Local Candidate Source Regions for 1I/'Oumuamua and 2I/Borisov
10:15 AM - 10:40 AM EDT

Early Planetary Systems: accretion, collisions, and orbital configurations (Session 202)

Chair: Gongjie Li

  Mor Rozner Technion The aeolian-erosion barrier for the growth of metre-size objects in protoplanetary-discs and implications
  Christopher Spalding Yale University The Solar Wind Prevents Re-accretion of Debris after Mercury's Giant Impact
  Jennifer Pouplin Purdue University The Importance of Being Swiftest: The effects of collisional fragmentation on the accretion timescale of the martian moons and the terrestrial planets
  Carlisle Wishard Purdue University Swiftest: An N-body dynamics code incorporating collisional regime determination and fragmentation (Poster)
  Matthew Clement Carnegie Institution of Washington Born eccentric: constraints on Jupiter and Saturn's pre-instability orbits
1:30 PM - 2:00 PM EDT

Asteroid Dynamics: Pairs, Multiples, Shapes, and Spin States (Session 203)

Chair: Seth Jacobson

  Darryl Seligman University of Chicago The Onset of Chaos in Permanently Deformed Binaries from Spin-Orbit and Spin-Spin Coupling
  Sanjana Prabhu Desai UCLA Evolution of the Binary Asteroid 66391 Moshup-Squannit (1999 KW4) (Poster)
  Valeri Makarov U.S. Naval Observatory Spin-orbit resonances of prolate asteroids and minor planets at higheccentricity (e > 0.9) (Poster)
  Darin Ragozzine Brigham Young University Non-Keplerian Effects in Kuiper Belt Multiples
  Tamires Moura São Paulo State University - UNESP Dynamical Environment and Surface Characteristics of Asteroid (16) Psyche (Poster)
  Timothy Holt University of Southern Queensland A pair of Jovian Trojans
2:00 PM - 2:20 PM EDT

Exoplanets: Linking Observations and Dynamics with TTVs (Session 204)

Chair: Juliette Becker

  Chris Fox University of Western Ontario Exomoon Candidates from Transit Timing Variations
  Jack Lissauer NASA Ames Research Center Perturbations, TTVs & the (Un)reliability of Ephemerides of Kepler Planets
  Mariah MacDonald Pennsylvania State University Confirming and characterizing the five-planet resonant chains of K2-138 and Kepler-80
  Abigail Graham Brigham Young University Investigating unseen exoplanets in Kepler multis
2:20 PM - 2:50 PM EDT

Planetary Satellites and Rings (Session 205)

Chair: Matthew Tiscareno

  Joseph A'Hearn University of Idaho Periodic orbits for small N co-orbital satellite systems
  Maryame El Moutamid Cornell University The Orbital History of Mimas, Enceladus and Dione
  Matija Cuk SETI Institute Are The Inner Satellites of Uranus Stable?
  Matthew Hedman University of Idaho Sudden changes in the structure and orbit of one of Saturn's dusty rings
  Philip Nicholson Cornell University The outer edge of Saturn’s A ring, as revealed by Cassini occultation observations.
  Matthew Young University of Idaho Evidence for a new type of moonlet wake near Enceladus (Poster)

Wednesday, August 5

9:30 AM - 10:00 AM EDT

Planetary System Stability (Session 300)

Chair: Dimitri Veras

  Daniel Tamayo Princeton University Predicting the long-term stability of compact multi-planet systems
  A. Paula Granados Contreras Academia Sinica Mass stability limit for coorbital planets in a horseshoe configuration
  Sacha Gavino CNRS-Université de Bordeaux Orbital stability of compact three-planet systems
  Billy Quarles Georgia Institute of Technology Orbital Stability of Circumstellar Earth-like planets in Binary Systems
  Marialis Rosario-Franco National Radio Astronomy Observatory Orbital Stability of Exomoons and Submoons with Applications to Kepler 1625b-I
  Laetitia Rodet Cornell University Hiding resonant objects behind a big friend (Poster)
10:00 AM - 10:25 EDT

Bars and Spiral Arms in Galaxies (Session 301)

Chair: Aleksey Generozov

  Monica Valluri University of Michigan FORSTAND: A New Schwarzschild Dynamical Modeling Code for Galaxies of All Morphological Types
  Katherine Xiang Johns Hopkins University Buckling bars in face-on galaxies observed with MaNGA
  E. Athanassoula Laboratoire D'Astrophysique De Marseille Orbits in galactic bars
  Angela Collier JILA/ UC Boulder Halo-Bar Coupling via Secular Torques
  Emma Lieb University of Colorado Boulder Leading Spiral Arms in Isolated Disc Galaxies -- Duncombe Student Research Prize Winner

Special Session

The Dynamics of Building a Dynamics Community (Session 302)

Chair: Smadar Naoz

2:00 PM - 2:05 PM Ruth Murray-Clay (DDA Vice-Chair) Thoughts on Building an Inclusive Community in a Challenging Environment
2:05 PM - 3:30 PM EDT Sherard Robbins (Invited Workshop) Do I Have To?: Navigating Your Introversion In Higher Education.

Thursday, August 6

11:00 AM - 11:30 AM EDT

Special Session

Artificial Celestial Bodies as a Dynamical Laboratory for Astrophysical and Celestial Dynamics (Session 400)

Chairs: TBD

  Alessandra Celletti University of Rome Tor Vergata (Invited) Regular, resonant and chaotic motions within space debris
  Shane Ross Virginia Tech (Invited) The interplanetary transport network: mechanisms of fast transport in the solar system
  Conor Benson University of Colorado YORP-Driven Spin State Evolution of Meter-Sized Asteroids
  Marielle Pellegrino University of Colorado Boulder Influence of Solar Radiation Pressure on the Luni-Solar Resonance Structure of MEO satellites
11:30 AM - 11:50 AM EDT

Near Earth Asteroids (Session 401)

Chair: Althea Moorhead

  Jean-Luc Margot University of California, Los Angeles Measurements of Yarkovsky Drift Rates for 247 Near-Earth Asteroids
  Jorge Pérez-Hernández Universidad Nacional Autonoma de Mexico (UNAM) The Yarkovsky effect for (99942) Apophis and observational predictions for the upcoming 2020-2021 close approach to Earth -- Duncombe Student Research Prize Winner
  Bruno Chagas UNESP Deflect an hazardous asteroid through kinetic impact (Poster)
  Daniel Scheeres University of Colorado Janus: A NASA SIMPLEx mission to explore two NEO Binary Asteroids
12:00 PM - 1:00 PM EDT DDA Members' Meeting
7:15 PM - 7:30 PM EDT

Solar System Evolution: numerical methods and long-term stability (Session 402)

Chairs: Sarah Morrison

  Oscar Fuentes-Munoz University of Colorado, Boulder Semi-analytical long-term propagation of asteroids
  Kevin Zhang Cornell University GLISSE: A GPU-optimized planetary system integrator with application to orbital stability calculations.
  Yukun Huang University of British Columbia Four Billion Year Stability of the Earth-Mars Belt (Poster)
7:30 PM - 7:55 PM EDT

Formation and Evolution of Planetary System Architectures (Session 403)

Chair: Sarah Millholland

  Ruth Murray-Clay University of California, Santa Cruz A Giant Impacts Phase for Giant Planets
  Isabel Angelo University of California, Los Angeles The Dynamical Origins of Kepler-1656b’s Extreme Eccentricity (Poster)
  Sarah Morrison Missouri State University Producing Close-in Super-Earths and Mini-Neptunes in Resonant Chains During In Situ Planet Formation
  Yuji Matsumoto Academia Sinica Institute of Astronomy and Astrophysics Breaking resonant chains triggered by long-term mass evolution
  Juliette Becker Caltech The Origins of Multi-Planet Systems with Misaligned, Nearby Companions

Friday, August 7

10:00 AM - 10:20 AM EDT

Meteoroids and Comets (Session 500)

Chairs: TBD

  Mark Moretto University of Colorado The Perturbative Effects of Gas Drag at Active Comets: Equations of Motion for the Mean Elements under General Inverse-Square Perturbations
  Luke Dones Southwest Research Institute Splitting as a Source of Periodic Comets
  Aswin Sekhar Armagh Observatory and Planetarium GR Precession Preventing Meteoroid Stream from Falling Into the Sun (Poster)
  Althea Moorhead NASA Marshall Space Flight Center Realistic gravitational focusing of meteoroid streams

10:20 AM - 10:40 AM EDT

Outer Solar System: dynamics and observations of TNOs (Session 501)

Chair: Matthew Hedman

  Benjamin Proudfoot Brigham Young University Unlocking the mystery of the Haumea Family
  Ann-Marie  Madigan CU Boulder Collective gravity in the Outer Solar System
  Malena Rice Yale University Surveying the Trans-Neptunian Solar System with TESS -- Duncombe Student Research Prize Winner
  William Oldroyd Northern Arizona University Constraining the Outer Solar System Perihelion Gap

10:40 AM - 11:05 AM EDT

Planets and Planetesimals around Highly Evolved Stars (Session 502)

Chairs: Cristobal Petrovich

  Catriona McDonald University of Warwick How the breakup of triaxial asteroids generates debris reservoirs for white dwarf pollution (Poster)
  Christopher O'Connor Cornell University High-e migration of planetesimals around polluted white dwarfs
  Alexander Stephan UCLA Social Distancing for Stars: A hidden friend for WD J091405.30+191412.25
  Dimitri Veras University of Warwick The dynamical history and current orbital constraints of a milestone ice giant planet orbiting a white dwarf
  María Ronco Instituto de Astrofísica - Pontificia Universidad Católica de Chile How Jupiters save or destroy inner Neptunes around evolved stars
1:00 PM - 1:25 PM EDT

Planetary System Obliquities and Tidal Evolution (Session 503)

Chair: Smadar Naoz

  Yubo Su Cornell University Dynamics of Colombo's Top: Generating Exoplanet Obliquities from Planet-Disk Interactions -- Duncombe Student Research Prize Winner
  Sarah Millholland Princeton University Formation of Ultra-Short-Period Planets by Obliquity-Driven Tidal Runaway
  Craig Duguid University of Leeds Convective turbulent viscosity acting on equilibrium tidal flows: new frequency scaling of the effective viscosity
  Cristobal Petrovich University of Arizona Disk dispersal-driven instabilities: application to hot Neptunes
  Steven Kreyche University of Idaho Retrograde-rotating exoplanets experience obliquity excitations in an eccentricity-enabled resonance
1:25 PM - 1:50 PM EDT

The Center of Galaxies (Session 504)

Chair: Alexander Stephen

  Smadar Naoz University of California, Los Angeles  A Hidden Friend for the Galactic Center Black Hole, Sgr A*   
  Sanaea Rose UCLA On Socially Distant Neighbors: Binaries as Density Probes in the Galactic Center
  Aleksey Generozov University of Colorado, Boulder The Hills Mechanism and the Galactic Center S-stars
  Heather Wernke University of Colorado Photometry of Simulated Eccentric Nuclear Disks
  Alexander Rodriguez University of Colorado Galactic Merger Implications for Eccentric Nuclear Disks
1:50 PM - 2:00 PM Kat Volk, SOC and DDA chair Meeting Wrap Up, Final Announcements


Asynchronous Poster Presentations (Session 103)

Discussion via Slack

Available all week

M. Clement Earth and Planets Laboratory, Carnegie Institution of Washington New initial conditions for terrestrial planet formation derived from high resolution simulations of planetesimal accretion
M Cuk SETI Institute, "Barrel Instability" for Elongated Secondaries in Binary Asteroids
C. Filion Department of Physics & Astronomy, The Johns Hopkins University The Low Mass Stellar Initial Mass Function of the Ultra Faint Dwarf Spheroidal Galaxy Boötes I
P. Gratia JP Morgan Chase (formerly Northwestern University) Eccentricity and the Lifetimes of Closely-Spaced Five-Planet Systems
A. Moorhead NASA Marshall Space Flight Center Is LaTeX use correlated with the number of equations in a manuscript?
D. Veras University of Warwick A full-lifetime planetary simulation: from stellar birth cluster evolution to planetary destruction around white dwarfs
K. Volk Lunar and Planetary Lab, The University of Arizona Dynamical instabilities in systems of multiple short-period planets are likely driven by secular chaos: a case study of Kepler-102