Dynamical Reconstruction of Galaxies

17 - 21 February 2020

Venue: Lorentz Center@Oort

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The emergence of Integral Field Unit (IFU) data has been transformative for our understanding of the internal structure of galaxies. Where once galaxy structure could only be inferred through images, the phase-space information encoded in IFU data allows dynamical structures to be disentangled better than ever before. These structures are created by the formation and evolution of galaxies as a whole, shaped both by external processes such as mergers and internal secular evolution. The sample of galaxies for which IFU data is available is growing thanks to a number of ongoing surveys, providing insights into the general galaxy population, and motivating novel classification schemes, such as the dynamical Hubble sequence.

This revolution in the observations has happened alongside great strides in the theoretical modelling of galaxies. High resolution hydrodynamical simulations have been developed with improved implementations of unresolved baryonic physics in order to create realistic galaxies in a cosmological context. These simulations allow the dynamical histories of galaxies to be traced through cosmic time. This helps us to decrypt the stellar dynamical memory and stellar population memory of observed galaxies, information about a galaxy’s dynamical past encoded in their stellar orbits and chemical tracers indicative of a stars origin, respectively. Together, these techniques point towards a new understanding of the dynamical evolution of galaxies, and new possibilities for reconstructing the dynamical properties of individual systems.

This workshop aims to bring together junior and senior researchers working across different areas of observation and theory for a timely discussion on the dynamical reconstruction of galaxies. In particular, the aim is to foster communication between these two communities by offering a mixed program of talks by theorists and observers across the first three days, individually themed ‘The zoo of galaxy components’,  ‘Stellar population memory’ and  ‘Stellar dynamical memory’. For the final two days, we will focus on the two perspectives separately with ‘Back in time with simulations’ and  ‘Back in time with observations’. The organizing committee is committed to a diverse and inclusive workshop.


    February 17

    The zoo of galaxy components (chair: Glenn van de Ven)

    09:3010:10 Arrival, registration
    10:1511:00 Welcome and Business cards
    11:0011:30 Background talk: Enrichetta Iodice - The assembly history of the Fornax cluster
    11:3011:40 Open questions: Jesse van de Sande & Glenn van de Ven
    11:4012:05 Invited talk: Sébastien Comerón - Rotation curves as a tool to recover the fraction of retrograde material in thick discs and the effects of line-of-sight integration
    12:0514:05 Lunch @Huygens restaurant
    14:0514:25 Contributed talk: Alina Boecker - Link between stellar population and dynamical memory
    14:2514:45 Contributed talk: Katja Fahrion - Globular clusters as tracers of galaxy assembly
    14:4514:55 Pitch: Marius Cautun - The Milky Way total mass profile as inferred from Gaia DR2
    14:5515:05 Pitch: Ismael Pessa - Multiwavelength kinematic tracers to derive the underlying gravitational potential on PHANGS galaxies
    15:0515:35 Plenary discussion
    15:3516:15 Coffee break
    16:1517:45 Informal groups
    17:4518:00 Informal groups recap
    18:0019:00 Wine and Cheese Party @Common Room

    February 18

    Stellar population memory (chair: Reynier Peletier)

    09:3010:00 Background talk: Stefano Zibetti - Extragalactic archaeology with stellar populations and the case for a synergy with dynamical modelling
    10:0010:10 Open questions: Ryan Leaman & Richard McDermid
    10:1010:35 Invited talk: Mariya Lyubenova - The varying stellar initial mass function
    10:3511:05 Coffee break
    11:0511:25 Contributed talk: Ignacio Martin-Navarro - Stellar populations and galaxy quenching
    11:2511:45 Contributed talk: James Trayford - Evolving kinematic structures within EAGLE galaxies
    11:4511:55 Pitch: Ryan Leaman - Chemical evolution tools for understanding dynamical evolution of galaxies
    11:5512:05 Pitch: Prashin Jethwa - Weight Uncertainties
    12:0512:15 Pitch: Meghan Hughes - Using globular clusters as tracers for Jeans Modelling in the E- MOSAICS simulations
    12:1512:25 Pitch: Tadeja Versic – Accretion histories of galaxies from the populations of globular clusters
    12:2514:15 Lunch break
    14:1514:45 Plenary discussion
    14:4516:15 Informal groups
    16:1516:45 Coffee break
    16:4517:45 Informal groups
    17:4518:00 Informal groups recap

    February 19

    Stellar dynamical memory (chair: Sree Oh)

    09:3010:00 Background talk: Ling Zhu - Tagging chemistry to dynamical models
    10:0010:10 Open questions: Ortwin Gerhard & Marie Martig
    10:1010:35 Invited talk: Eugene Vasiliev - Schwarzschild modelling of barred galaxies and supermassive black holes
    10:3511:05 Coffee break
    11:0511:25 Contributed talk: Jesse van de Sande – Comparing 3D spectroscopic observations with galaxies from cosmological hydrodynamical simulations
    11:2511:45 Contributed talk: Grzegorz Gajda - Deprojecting stellar populations in the Andromeda Galaxy
    11:4511:55 Pitch: Ortwin Gerhard – The power of M2M
    11:5512:05 Pitch: James Binney – Self-consistent, multicomponent models with AGAMA
    12:0512:15 Pitch: Sabine Thater - The orbital distribution in the vicinity of massive black holes
    12:1512:25 Pitch: Giulia Santucci - Understanding the formation of central galaxies through stellar population gradients and orbital decomposition
    12:2514:15 Lunch break
    14:1514:45 Plenary discussion
    14:4516:15 Informal groups
    16:1516:45 Coffee break
    16:4517:45 Informal groups
    17:4518:00 Informal groups recap

    February 20

    Back in time with simulations (chair: James Trayford)

    09:3010:00 Background talk: Rhea Silvia Remus - Reconstructing dynamical galaxy properties from cosmological simulations -- how to compare simulations with observations
    10:0010:10 Open questions: Benjamin Moster & Lorenzo Posti
    10:1010:35 Invited talk: Marie Martig - Memory of past mergers in galactic disks
    10:3511:05 Coffee break
    11:0511:25 Contributed talk: Tobias Buck - Dynamical components of the MWcosmological hydrodynamical simulations
    11:2511:45 Contributed talk: Sijie Yu - Stars made in outflows may populate the stellar halo of the Milky Way
    11:4511:55 Pitch: Benjamin Moster - Classifying dynamic components of galaxies with deep learning
    11:5512:05 Pitch: Min Du - Intrinsic structures identified in IllutrisTNG galaxies: the properties and evolution history
    12:0512:15 Pitch: Sebastian Trujillo - The imprint of the tumultuous lives of galaxies in the kinematics of their globular cluster populations
    12:1512:25 Pitch: Ivana Ebrova - Kinematic features of galaxies in large-scale cosmological simulations
    12:2514:15 Lunch break
    14:1514:45 Plenary discussion
    14:4516:15 Informal groups
    16:1516:45 Coffee break
    16:4517:45 Informal groups
    17:4518:00 Informal groups recap

    February 21

    Back in time with observations (chair: Sabine Thater)

    09:3010:00 Background talk: Rachel Bezanson - Measuring stellar kinematics at high-redshift from the LEGA-C survey and beyondfirst steps
    10:0010:10 Open questions: Sebastian Trujillo & Ignacio Martin-Navarro
    10:1010:35 Invited talk: Alfred Tiley - Linking High- and Low-Redshift IFS Studies
    10:3511:05 Coffee break
    11:0511:25 Contributed talk: Sree Oh - Decomposed Stellar Kinematics of Galaxy Bulges and Disks
    11:2511:45 Contributed talk: Arjen van der Wel - Stellar Populations at z~1 from the LEGA-C Survey
    11:4511:55 Pitch: Ana Paulino-Afonso - Reconstructing high-redshift IFS data from local Universe observations
    11:5512:05 Pitch: Adriano Poci - The Interplay between Dynamics and Populations of Galaxies
    12:0512:15 Pitch: Reynier Peletier - Dynamics of dwarf galaxies in the Fornax Clusters from IFU observations
    12:1514:00 Lunch break
    14:0014:30 Plenary discussion
    14:3015:00 Summary: Aura Obreja
    Please login to view the participants information. You have received the log in details in your registration confirmation.

    Glenn van de Ven, University of Vienna  

    Ling Zhu, Shanghai Astronomical Observatory  

    Aura Obreja, University Observatory Munich  

    James Trayford, Leiden Observatory  

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