21st Century Astrometry: crossing the Dark and Habitable frontiers

IAU Symposium 348 - XXXth IAU GA - 28 to 31 August 2018

Astrometry is transversal to Astronomy. Thanks to increased levels of precision and accuracy it can probe and provide keys to understand Dark Matter, to reveal planetary system architectures, to empower studies of Gravity, of the behavior of matter in compact objects and to determine the Hubble constant to unprecedented accuracies.

At the commemorations of IAU 100th anniversary, just after the Gaia DR2 and with the excitement of future mission proposals and ground infrastructures, the IAU348 Symposium aims to join different communities to foster bridges: bridges that may allow different communities to address together some of the most profound questions of modern Science. What is Dark Matter? Is there life elsewhere in the Universe?

Topics included

  • Dwarf Galaxies: internal dynamics of Milky Way companions;
  • HVS: probing the triaxiality of the Milky Way DM Halo;
  • Disk perturbations due to DM clumps;
  • Exoplanet detection: from long period Jupiters to Habitable Exo-earths;
  • Exoplanet characterisation: dynamics, chaos and orbital determination;
  • Astrometric signatures of Black Holes: microlensing, shadows, hot-spots, and gravitational effects;
  • Equation of state of NS: probing the most extreme states of matter;
  • Trigonometric parallaxes for H0 determination: Cepheids, RR-Lyraes and other steps of the distance ladder;
  • New astrometric instruments and technologies: space mission concepts and ground based astrometry in the age of the ELTs;
  • Modern Statistical Methods for astrophysical information extraction from Astrometric data: signal processing, bayesian methods, machine-learning, optimization strategies.


Detailed IAUS348 Programme: in April 2018

Important information

Symposium dates during the General Assembly: 28th - 31st August, 2018

Forthcoming dates:

  • Feb. 28, 2018: Deadline for oral abstract submission and for the IAU grant submission.
  • April 2018: IAU grant results.
  • May 31, 2018: Deadline for poster abstract submission: IAU GA Registration page.

Proceedings: The proceedings of the IAUS348 will be published by Cambridge University Press (CUP). The IAU GA registration fee includes access to the electronic proceedings. Printed versions may be purchased for approximately 60 euros.

Contact: For questions concerning the symposium, please contact iaus348astro@gmail.com.

Scientific Organizing Committee

  • Alain Leger, CNRS/IAS, France (co-chair)
  • Alessandro Sozzetti, INAF, Italy (co-chair)
  • Alberto Krone-Martins, Universidade de Lisboa, Portugal (co-chair)
  • Celine Boehm, Sydney University, Australia (co-chair)
  • Anne Lemaître, Université de Namur, Belgium
  • Barbara McArthur, University of Texas Austin, USA
  • Catherine Turon, Observatoire de Paris Meudon, France
  • David Spergel, Simons Center for Comp. Astrophysics & Princeton University, USA
  • François Mignard, Observatoire de la Côte d’Azur, France
  • Jill Tarter, SETI Institute, USA
  • John Tomsick, University of California, Berkeley, USA
  • Mariateresa Crosta, INAF Osservatorio Astrofisico di Torino, Italy
  • Norio Narita, National Astronomical Observatory of Japan, Japan
  • Torsten Ensslin, Max-Planck-Institut für Astrophysik, Germany
  • Yanxia Zhang, NAO Chinese Academy of Sciences, China

XXXth IAU General Assembly Organizing Committee


IAUS348 will take place at the IAU XXXth General Assembly. Please, register through the GA webpage:

Childcare is provided at the venue, free of charge (08:30 - 18:15, up to 12 years). More at: http://astronomy2018.univie.ac.at/registration/https://www.acv.at/planen/partner/childcare_1.html

For questions regarding the General Assembly and registration: http://astronomy2018.univie.ac.at/contact/

For questions regarding the Symposium, contact IAUS348 at: iaus348astro@gmail.com