20-24 March 2023
Haus H, Telegrafenberg
Europe/Berlin timezone

Poster for IAU Symposium 379 - Dynamical Masses of Local Group Galaxies

Amongst the most stringent limitations in astronomy and cosmology are the very large uncertainties on galaxy masses and sizes. Yet, this topic is undergoing a revolution due to increasing knowledge of 6D space-velocity data for galaxies in the Local Group. This is driven by Gaia and numerous accompanying surveys that provide an accurate Milky Way rotation curve, detailed orbits of the nearby dwarf galaxies, and first estimates of the motions of dwarf irregulars and in the M31 system. This IAU Symposium has a very focused goal: Determining the mass of galaxies from dwarfs to giant spirals. However, it addresses a very broad range of astronomical fields (from studies of variable stars for estimating distances to dynamical modeling), of wave-lengths to be investigated (from radio and optical for estimating the HI gas and stellar content and their motions, to X-rays for estimating the warm and hot ionized gas), and has major implications for a fundamental question (from the distribution and nature of dark matter to alternative models). Measuring galaxy masses at different scales in the Local Group impacts a broad range of astronomy, from stars, star clusters, to the Milky Way, distant galaxies, and Cosmology.

Key topics:

  • Astrometry and 3D velocities: Gaia and HST
  • Distances, Chemistry & Star formation in the Local Group: large surveys of resolved stars
  • The Galaxy mass and size: rotation curve, halo stars, globular clusters 
  • Galactic halo dwarf spheroidal and ultra-faint dwarfs
  • Magellanic System: the Clouds, the Stream and the Leading Arm
  • Dwarf irregular galaxies: dynamics, ram pressure effects
  • Andromeda System: rotation curve, halo dwarfs
  • Galaxy formation: histories of the Milky Way, of Andromeda, compared to field galaxies
  • Near field cosmology: galaxy dynamics, dark matter content, cosmological models

Meeting information:

  • Dates: 20.-24. March 2023
  • Location: Potsdam Telegrafenberg, Germany
  • Mode: primarily in-person, plus a limited number of online attendance slots will be made available
  • Program: a mix of talks, discussions, and poster sessions.
  • Workshop fee: 300 Euro (in-person) or 100 Euro (online).
  • Registration open until December 31, 2022. Registration deadline extended to January 15 (midnight, CET). After January 15, registrations will only be accepted for virtual participation.
  • Fee payment is not due at time of registration but before end of registration period.
  • Abstract deadline: October 31, 2022 extended to Friday, November 4, 16:00 CET.

Invited review speakers

  • Giuseppina Battaglia
  • Ana Bonaca
  • Souradeep Bhattacharya
  • Elena d’Onghia
  • Denija Crnojevic
  • Federico Lelli
  • Alan McConnachie

The SOC plans to select additional invited topical/highlight talks from the submitted abstracts.

Scientific Organizing Committee

Francois Hammer (chair) Observatoire de Paris, France
Marcel Pawlowski (chair) AIP, Germany
Beatriz Barbuy IAG, Brazil
Maria-Rosa Cioni AIP, Germany
Cuihua Du UCAS, China
Anna-Christina Eilers MIT, United States
Eva Grebel Heidelberg University, Germany
Roger Ianjamasimanana Instituto de Astrofísica de Andalucía (IAA), Spain
Stacy McGaugh CWRU, United States
Angeles Perez Villegas Instituto de Astronomia-UNAM, Mexico
Justin Read University of Surrey, United Kingdom
Marina Rejkuba ESO, Germany

Local Organizing Committee

Marcel Pawlowski (chair) AIP, Germany
Maria-Rosa Cioni (chair) AIP, Germany
Salvatore Taibi  AIP, Germany 
Pengfei Li AIP, Germany
Kosuke Jamie Kanehisa AIP, Germany 
Elena Sacchi AIP, Germany 
Nikolay Kacharov  AIP, Germany 
Mariana Pouseiro Julio  AIP, Germany 
Anna Queiroz  AIP, Germany 
Stefano O. Souza  AIP, Germany 
Yongjun Jiao  Observatoire de Paris, France 

Editors of Proceedings

Piercarlo Bonifacio Observatoire de Paris, France
Maria-Rosa Cioni AIP, Germany
Francois Hammer Observatoire de Paris, France
Marcel S. Pawlowski AIP, Germany
Salvatore Taibi AIP, Germany


dwarf galaxy

AIP logo with text IAU Logo  


Haus H, Telegrafenberg
Potsdam, Germany
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