[Astro] Fwd: The many scales of galaxy environments conference 2026 - First announcement

[Nina Hatch (staff)]

Relevant conference for many.
Nina

Begin forwarded message:

From: Benedetta Vulcani <benedetta.vulcani at inaf.it>
Subject: The many scales of galaxy environments conference 2026 - First announcement
Date: 30 September 2025 at 15:00:02 BST
To: "MCLEOD, ANNA" <anna.mcleod at durham.ac.uk>
Cc: Benedetta Vulcani <benedetta.vulcani at inaf.it>

*APOLOGIES IF YOU RECEIVE THIS MORE THAN ONCE*


***FIRST ANNOUNCEMENT***

THE MANY SCALES OF GALAXY ENVIRONMENTS
July 13 -- 17, 2026
Ascona, Switzerland

Dear Colleagues,

We are pleased to announce the planned meeting "The Many Scales of Galaxy Environments" to be held in Ascona (Switzerland) on July 13 - 17, 2026. We would like to ask you to spread the information to all those who might be interested.

This conference will explore how galaxies evolve within their environments, bridging processes across six orders of magnitude in scale—from star formation in molecular clouds to the influence of the cosmic web. By combining multi-wavelength observations with multi-scale simulations, we aim to uncover how local galactic ecosystems, large-scale structures, and cosmic history shape star formation, AGN activity, and feedback. Key themes include the role of the environment in galaxy growth, the evolution of these processes over cosmic time, and the cascade of interactions linking megaparsec to parsec scales. We envisage an engaging and lively meeting in which we discuss the status, challenges and prospects for these specific areas of galaxy evolution. We also envisage intense discussion/brainstorming sessions to summarize where we are, what we do not understand, what is controversial and how we can make progress in the next few years.


The Scientific Organising Committee  is composed by:
Benedetta Vulcani (co-chair), INAF Osservatorio Astronomico di Padova, Italy
Anna McLeod (co-chair), Durham University, UK
Giovanni Cresci, INAF Osservatorio Astrofisico di Arcetri, Italy
Sandro Tacchella, Cambridge University, UK
Angela Adamo, Stockholms Universitet, Sweden
Robert Feldmann, Universität Zürich, Switzerland
Allison Noble, Arizona State University, USA
Stephanie Tonnesen, CCA, Flatiron Institute, USA
Hannah Übler, Max Planck Institute for Extraterrestrial Physics, Germany


Invited Speakers:
Yannick Bahé (tbc)
Victoria Fawcett
Deanne Fisher
Ben Forrest
Natascha Förster Schreiber
Filippo Fraternali
Michele Fumagalli
Eric Giunchi
Mike Grudic
Adam Muzzin
Bianca Poggianti
Andrew Pontzen
Rhea-Silvia Remus

More details can be found on the conference website:

https://astro.dur.ac.uk/ascona/


IMPORTANT DEADLINES

October 20, 2025: Second announcement and abstract submission opens
December 15, 2025: Third announcement and abstract submission deadline
March 1, 2026: Program release and registration opens
April 30, 2026: Registration closes

Thank you,
Benedetta & Anna

—
Scientific rationale

Galaxies are a critical nexus in the hierarchical structure of the Universe, acting as both the cradle and the stage for the complex processes of star formation and evolution. Within these vast systems, star-forming giant molecular clouds emerge and evolve, driving the birth of stars and shaping the chemical evolution of galaxies. However, galaxies themselves are not isolated entities; they are deeply influenced by their surrounding environments, ranging from the local galactic ecosystem to the large-scale structures of the cosmic web. This interplay between a galaxy and its environment is fundamental to understanding the mechanisms behind star formation, active galactic nuclei (AGN) activity, and galaxy evolution.
The challenge of understanding how galaxies evolve is a truly multi-scale endeavor, requiring the integration of observations and simulations across six orders of spatial scales—ranging from the internal dynamics of molecular clouds on sub-parsec scales to the larger-scale structure of galaxy clusters spanning megaparsecs. Such a broad scope necessitates a concerted effort to connect the local processes within galaxies to the larger-scale environment in which they reside, offering critical insights into the roles of environment in shaping galaxy evolution.

To make rapid and meaningful progress in this area, a synergy between multi-wavelength observations and multi-scale simulations is indispensable. Observational data, spanning the electromagnetic spectrum from radio to X-ray, provide complementary views of the processes occurring within galaxies, while simulations help model the complex interactions across scales, from gas dynamics in molecular clouds to the large-scale effects of cosmic structures. Only through such integrated approaches can we begin to unravel the intricate relationships between galaxies and their environments.

The key topics we aim to address in this conference include:

  *
The Local Galactic Ecosystem - Star Formation, AGN, and Feedback in Context: How do the internal structures and conditions within galaxies—gas flows, stellar populations, and black hole activity—depend on the surrounding galactic-scale environment?
  *
Galaxies in the Cosmic Web - Environmental Drivers of Evolution: How do large-scale structures such as clusters, filaments, and voids shape the growth of galaxies? What roles do mergers, tidal forces, and intergalactic accretion play in modulating star formation and AGN activity?
  *
Cosmic Time and Environmental Transformation: How do galactic environments evolve across cosmic history, particularly during critical phases such as cosmic noon and reionization? How do the environmental drivers of galaxy evolution change over time?
  *
The Environmental Cascade - Linking Mpc to pc Scales: How do processes on the largest cosmic scales influence conditions at the smallest scales within galaxies—and vice versa? Can we trace a causal chain connecting cosmic web structures to star formation efficiencies and feedback regulation?

Through these discussions, we aim to foster a deeper understanding of the intricate relationship between galaxies and their environments, as well as the multi-scale processes that govern their evolution. By integrating insights from both theory and observations, we hope to open new avenues of research that will drive forward our understanding of the fundamental mechanisms shaping the Universe.

***************************************************************
Benedetta Vulcani

INAF - Osservatorio Astronomico di Padova. Vicolo Osservatorio 5, 35122 Padova, Italy

phone: +39 049 8293422
email: benedetta.vulcani at inaf.it

*****************************************************************


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