The Milky Way Assembly Tale - Plot and characters as of today, and what to expect in future editions

27 May 2024, 08:30 → 31 May 2024, 18:00 Europe/Rome

Bologna

 

Our knowledge of the Milky Way's assembly history has been revolutionised by the advent of the Gaia mission. Since the availability of kinematic information for more than 1 billion stars with Gaia DR2, the story of how our Galaxy was formed from the merger of smaller galaxies has begun to unravel. Gaia's handwriting has been supported by the combination of its dynamical information with chemical abundance and age measurements from spectroscopic (e.g. APOGEE, GALAH, GES, LAMOST, RAVE) and asteroseismic (e.g. CoRoT, Kepler, K2, TESS) surveys, which are now adding more detail to the plot. However, as the plot unravels, it becomes more and more complex. Observations and models need to move forward in tandem to support its evolution and uncover possible twists. Future large-scale spectroscopic surveys will greatly improve our chemical knowledge of the Milky Way's stellar populations and, together with future asteroseismic missions, will open the window to systematic determination of accurate stellar ages as a new ink to fuel the writing.

 

With the rapid pace at which the Milky Way assembly story is constantly being updated, the aim of this conference is to bring the community onto the same page, where the main characters, their characteristics and the timeline of their contribution are well established, and where the main observational and theoretical open questions for the continuation of the story are set out and discussed.

 

The topics to be covered at the conference are as follows

 

• Substructures of the Milky Way halo, in the chemical-dynamical-chronological space;
   
• Evolution of the Milky Way disk through the interplay with the assembling mergers;
   
• Stellar age as a critical component - development of new methods to infer age with increased precision and accuracy and cosmological implications;
   
• Predictions from simulations as a tool for interpreting the complex observational evidence;
   
• The assembly history of the Local Group.

 

Important information on unsolicited requests for hotels bookings

Please note that the official partner of the "Milky Way Tale Conference" is Planning Congressi srl (https://planning.it/). We urge caution in case you receive unsolicited offers to provide hotel rooms or other services from different companies, or unsolicited phone calls requesting, e.g., to confirm your hotel reservations. We strongly advise you not to contact them or provide them with any of your personal details, and cannot accept any responsibility for adverse consequences should you choose to do so. In case of any questions, please kindly contact Planning at r.suzzi@planning.it.

Monday 27 May

09:00 → 10:30 Session: MW Halo chemo-dynamics

09:00 Introduction

09:20 The Milky Way's assembly tale told by the different characters

Speaker: Amina Helmi

Dodd.pptx

09:50 Tracing the Milky Way's ancient footsteps: Insights from chemodynamical investigations of bright and distant metal-poor stars

Speaker: Akshara Viswanathan (Kapteyn Astronomical Institute, University of Groningen)

Viswanathan_Bologna.pptx

10:10 A Walk on the Retrograde Side (WRS) project

Speaker: Edoardo Ceccarelli (Istituto Nazionale di Astrofisica (INAF))

Ceccarelli_Bologna_MW_Tale.pdf

10:30 → 11:00 Coffee Break

11:00 → 12:30 Session: MW Halo chemo-dynamics

11:00 Disc emergence in the Milky Way and the local view on the messy, turbulent state of high-redshift galaxies

Speaker: Vasily Belokurov

Belokurov_Bologna2024.key

11:30 Bar resonances in the highly eccentric stellar halo

Speaker: Adam Dillamore (Institute of Astronomy, University of Cambridge)

MW_Assembly_Tale_Dillamore.pptx

11:50 Simulation Perturbation Theory: Modeling the Response of Stellar Streams to Galactic Substructure with Differentiable Simulations

Speaker: Jacob Nibauer (Princeton University)

BolognaNibauer_resend.key

12:10 Unveiling the Galactic Horizons: From the Heart to the Halo

Speaker: Vedant Chandra (Harvard University)

chandra_mwtale2024.pptx

12:30 → 14:00 Lunch Break

14:00 → 15:30 Session: MW Halo chemo-dynamics

14:00 Chemistry of halo substructures

Speaker: Diane Feuillet

Feuillet_talk_Monday.pdf

14:30 The Role of the r-Process in Shaping the Milky Way's History

Speaker: David Aguado (Instituto de Astrofísica de Canarias)

aguado_bologna.pdf

14:50 Deciphering the Primordial Milky Way: Insights from Galactic Chemical Evolution Modeling

Speaker: Boquan Chen

Chen_updated.pdf

15:10 The origins of stellar populations in the Milky Way halo revealed by precise chemical abundances

Speaker: Tadafumi Matsuno (ARI, Heidelberg University)

2405Bologna_Matsuno.pdf

15:30 → 16:00 Coffe Break

16:00 → 18:00 Session: MW Halo chemo-dynamics

16:00 New views on the metal-poor Milky Way halo

Speaker: Else Starkenburg

Bologna_Starkenburg_2405_v2.pptx

16:30 Unveiling the dynamical properties of the ancient inner Galaxy with PIGS

Speaker: Dr Anke Ardern-Arentsen (IoA, Cambridge)

2024_MWTale-Bologna-AA.key

16:50 Metallicity distributions of halo stars: do they trace the Galactic accretion history?

Speaker: Alice MORI (Dipartimento di Fisica e Astronomia, Università di Firenze)

Mori.key

17:10 Chronochemodynamics of the Milky Way Halo with GALAH

Speaker: Sven Buder (Australian National University Canberra)

2405_SvenBuder_Bologna_v240526.key

17:30 Discussion

Discussion.pptx

Tuesday 28 May

09:00 → 10:30 Session: MW Halo chemo-dynamics

09:00 The History of the Galactic Disk(s)

Speaker: Hans-Walter Rix

Rix.pptx

09:30 On the early assembly history of the Galaxy

Speaker: Danny Horta (Flatiron institute)

Horta.pptx

09:50 Galactic Archaeology with Globular Clusters - Europium is a Chemical Tag Between Globular and their Hosts Across All Metallicities

Speaker: Stephanie Monty (Australian National University)

SMontyBologna.key

10:10 Globular Cluster Stream Populations of Milky Way-type Galaxies - How Many More Streams Can We Find?

Speaker: Sarah Pearson (University of Copenhagen)

SP_Bologna2024_new.pdf

10:30 → 11:00 Coffe Break

11:00 → 12:30 Session: MW Halo chemo-dynamics

11:00 Chemical Cartography of the Sagittarius Stream with Gaia

Speaker: Emily Cunningham

Cunningham.key

11:30 A portrait of the vast polar structure as a young phenomenon: Hints from its member satellites

Speaker: Salvatore Taibi (Leibniz Institute for Astrophysics Potsdam)

presentation_Taibi.pdf

11:50 The epoch of Milky Way dwarf accretion from Gaia DR3

Speaker: Francois Hammer

Hammer.zip

12:10 The impact of early mergers in the star formation history of the Milky Way disc

Speaker: Emma Fernández-Alvar (Universidad de La Laguna / Instituto de Astrofísica de Canarias)

emma_fernandez_alvar_Bolonia2024.pptx

12:30 → 14:00 Lunch Break

14:00 → 15:30 Session: MW Disc chemo-dynamics

14:00 The complex history of the Milky Way disks

Speaker: Cristina Chiappini

14:30 On the origin of the Galactic thin and thick discs, their abundance gradients and the diagnostic potential of their abundance ratios

Speaker: Nikos Prantzos (Institut d'Astrophysique de paris)

NP_2024_Bologna.pdf

14:50 What is rotating in the ancient Milky Way: a disc or a halo

Speaker: Hanyuan Zhang (University of Cambridge)

Hanyuan_Zhang.pptx

15:10 Stellar radial migration induced by bar-spiral interaction in the Milky Way

Speaker: Lea Marques (Leibniz-Institut fur Astrophysik Potsdam, Germany (AIP))

Marques_Bologna_May2024.pptx

15:30 → 16:00 Coffe Break

16:00 → 18:00 Session: MW Disc chemo-dynamics

16:00 The Milky Way Assembly tale from the dynamics of its disc and substructures

Speaker: Chervin Laporte

Laporte_hires.pdf

16:30 Warping, breaking and spiralling: the many disturbances of the outer Milky Way disc

Speaker: Paul McMillan (University of Leicester)

16:50 Late accretion history of the Milky Way encoded in the disc phase space

Speaker: Teresa Antoja (Institut de Ciències del Cosmos ICCUB, Universitat de Barcelona)

Bologna_Antoja.pdf

17:10 Discussion

Wednesday 29 May

09:00 → 10:20 Session: MW Disc chemo-dynamics

09:00 Deciphering the evolution of the Milky Way discs: Gaia APOGEE Kepler giant stars and the Besançon Galaxy Model

Speaker: Nadège Lagarde (Laboratoire d'Astrophysique de Bordeaux)

Talk_NLagarde.pdf

09:20 Unveiling the Formation of the Milky Way Disk: A Comprehensive Exploration of the Proto-Galactic Disk Star Formation History

Speaker: Anna Queiroz (Instituto de Astrofisica de Canarias)

Bologna_AnnaQueiroz.pdf

09:40 Gaia’s all-sky data to unravel the Galactic disk evolution

Speaker: Marc del Alcázar Julià (Universitat de Barcelona)

del_Alcázar_i_Julià_Marc_presentation.pptx

10:00 A search for substructures near the Galactic plane using RR Lyrae stars as tracers

Speaker: Nicolás Cristi Cambiaso (Pontificia Universidad Católica de Chile)

10:20 → 11:00 Coffe Break

11:00 → 12:30 Session: MW Disc chemo-dynamics

11:00 The chemistry of the Milky Way disc with the Gaia space mission

Speaker: Alejandra Recio-Blanco

11:30 Chemical Cartography in the Galactic Disk

Speaker: Keith Hawkins (University of Texas at Austin)

Hawkins_MW_Arms_IAU.key

11:50 Constraining the Milky Way disk's chemical evolution using an empirically derived metallicity profile with time and radius

Speaker: Bridget Ratcliffe (Leibniz Institute for Astrophysics Potsdam (AIP))

Ratcliffe.key

12:10 Probing the Solar Neighborhood: A Comprehensive Analysis of our neighborhood’s Age x Metallicity relation through ~ 50000 Subgiant Stars

Speaker: David Nataf (Johns Hopkins University)

NatafBolognaTalk.pptx

12:30 → 14:00 Lunch Break

14:00 → 15:30 Session: Extra-galactic assembly

14:00 The assembly history of the Milky Way satellites

Speaker: Alessio Mucciarelli

mucciarelli_alessio_bologna2.pdf

14:30 A Magellanic origin of the satellite plane?

Speaker: Eugene Vasiliev (University of Surrey)

talk_Eugene_Vasiliev (1).pdf

14:50 On the possible Origins of Phase-Space Structures among Satellite Galaxies in the Local Group

Speaker: Marcel Pawlowski (Leibniz-Institute for Astrophysics Potsdam (AIP))

Pawlowski_Wednesday.pdf

15:10 Hints of a disrupted binary dwarf galaxy in the Sagittarius stream

Speaker: Elliot Davies (Institute of Astronomy, Cambridge)

elliot_davies_mwassembly2024.pdf

15:30 → 16:00 Coffe Break

16:00 → 17:30 Session: Extra-galactic assembly

16:00 Insights into the Assembly History of M31 from its Halo Globular Clusters

Speaker: Annette Ferguson

ferguson_bologna_web.pdf

16:30 The Assembly History of Andromeda Galaxy (M31): A Major Merger Model and Direct Comparison with Chemodynamical Observations

Speaker: Charis Tsakonas (National and Kapodistrian University of Athens)

Charis Tsakonas-Milky Way Assembly Tale.pdf

16:50 A SPLASH of Kicked-Up Disk Stars in Andromeda's PHAT Halo

Speaker: Ivanna Escala

escala_bologna_v1.pptx

17:10 Signs of hierarchical merging events in dwarf galaxies

Speaker: Michele Bellazzini (Istituto Nazionale di Astrofisica (INAF))

MB_Bo_May_2024_copy.pdf

19:30 → 22:30 Social dinner: SOCIAL DINNER : CANTINA BENTIVOGLIO, VIA MASCARELLA 4/B, 40126 BOLOGNA [ indicative start time: 19:30 ]

Thursday 30 May

09:00 → 10:30 Session: Heavy data

09:00 Machine-learning methods for stellar spectroscopy in the era of large scale surveys

Speaker: Guillaume Guiglion

Talk_Bologna_29_May_2024_Guiglion.pdf

09:30 Spectro-Translator: A new method to homogenize large Spectroscopic catalog

Speaker: Guillaume Thomas (Instituto de Astrofísica de Canarias (IAC))

Thomas_SpectroTranslator.key

09:50 From metal-poor to metal-rich - new insights on MW disc history with machine learning and Gaia

Speaker: Samir Nepal (AIP, Potsdam)

The_MW_assembly_tale_May_2024_Samir_Nepal.pdf

10:10 Machine learning models for separating accreted and in-situ stars in Milky Way-type galaxies

Speaker: Andrea Sante (Liverpool John Moores University / The Alan Turing Institute)

SANTE (1).pptx

10:30 → 11:00 Coffe Break

11:00 → 12:40 Session: The role of age

11:00 A revolution in stellar age determination

Speaker: Payel Das

milkywaytale_payeldas_300524.pdf

11:30 Chronology of our Galaxy from Gaia color-magnitude diagram fitting (ChronoGal): spatially resolved star formation histories of the Milky Way disk and halo

Speaker: Carme Gallart

Gallart_Bolonia2024_web.pdf

12:00 Star formation history of the Milky Way disk with Gaia DR3

Speaker: Michele Cignoni (Dipartimento di Fisica, Universita' di Pisa)

12:20 Massively determining stellar ages with SPInS

Speaker: Laia Casamiquela (GEPI Observatoire de Paris)

presentation_Casamiquela.pdf

12:40 → 14:00 Lunch Break

14:00 → 15:30 Session: The role of age

14:00 Precision and accuracy of stellar age estimates

Speaker: Karsten Brogaard

MWAT_talk_age_Brogaard.pdf

14:30 The CARMA project: homogeneous ages of Globular clusters to probe the Galactic assembly

Speaker: Matteo Monelli (Istituto de Astrofísica de Canarias (IAC))

matteo_monelli_2024_05_30V24_MW_bologna.pdf

14:50 Impact of α and O enhancement on asteroseismic age determination of field stars: application to the APO-K2 catalogue

Speaker: Pier Giorgio Prada Moroni

15:10 Helioseismic determination of the metal mass fraction in the solar convective envelope

Speaker: Gaël Buldgen (Université de Genève)

Buldgen_TalkConfBolognaCorr.pdf

15:30 → 16:00 Coffe Break

16:00 → 18:00 Session: The role of age

16:00 Uncertainties on stellar models and methods of age estimates

Speaker: Georges Meynet

BOLOGNA_MAY_2024MEYNET.pptx

16:30 Tracing the Milky Way's Journey Through Time

Speaker: Giada Casali (Istituto Nazionale di Astrofisica (INAF))

Casali_Bologna2024_2.key

16:50 New view of Galactic discs : unveiling precise ages with individual oscillation modes

Speaker: Josefina Montalban (Universita di Bologna)

JMontalban_MWAT_2024.pdf

17:10 The Milky Way Assembly Tale: the Plato era

Speaker: Saskia Hekker (Heidelberg University & HITS)

Hekker_presentation_Bologna.pptx

17:30 Discussion

Friday 31 May

09:00 → 10:30 Session: Predictions by simulations

09:00 The Milky Way Assembly Tale as told by the NIHAO-UHD simulations

Speaker: Tobias Buck

09:30 High-fidelity cosmological simulations of the Local Group

Speaker: Ewoud Wempe (Kapteyn Astronomical Institute, University of Groningen)

ewoudwempe_localgroup_presentation_bologna.key

09:50 The cosmological formation of Milky Way-like disks

Speaker: Prof. Andrew Wetzel (University of California, Davis)

wetzel.pdf

10:10 Studying the stellar disc and halo of the Milky Way with the GASTRO Simulations and Blue Horizontal Branch Stars

Speaker: Dr Joao A. S. Amarante (ICC-UB)

Amarante-Bologna2024.pdf

10:30 → 11:00 Coffe Break

11:00 → 12:10 Session: Predictions by simulations

11:00 Predicting the impact of the Galaxy’s mergers on the disc(s) and bar with cosmological simulations

Speaker: Robert Grand

Grand_Bologna_may2024_2.key

11:30 Origin of chemical bimodality in the Milky Way-like disk galaxies: insights from cosmological simulations

Speaker: Sergey Khoperskov

khoperskov_bologna_bimodality24.key

11:50 Digging for the relics of ancient mergers at the heart of the Milky Way

Speaker: Thomas Tomlinson (Durham University)

Tomlinson.pdf

12:10 → 13:40 Lunch Break