The Ψ2 Initiative

Ψ2 is the Paris-Saclay International Programs for Physical Sciences and their Interfaces. It is an initiative of the new Institut Pascal, funded by the Paris-Saclay University. The program's mission is to bring together groups of scientists for an extended period of time to tackle physical problems in a collaborative environment. More information on Ψ2 can be found on the site of the Paris-Saclay University.

The Gaia program

The Milky Way in the age of Gaia is a program of the Ψ2 initiative. It will take place at Institut d’Astrophysique Spatiale (IAS) in Orsay, from October 8th to November 3rd, 2018.

The four-week program will bring together experts working on many facets of ISM science and star formation, including large-area surveys, numerical simulations, statistical methods, etc. Broadly speaking, each week will have an emphasis on one physical aspect of the ISM. The selection of the participants will be done in order to have experts in each topic present for the duration of the program.

Scientific Organizing Committee

  • Susan Clark (IAS, Princeton, USA)
  • Rosine Lallement (GEPI, Meudon, France)
  • Douglas Marshall (AIM, Université Paris Diderot, France)
  • Marc-Antoine Miville-Deschênes (AIM, CEA-Saclay, France)
  • Joshua Peek (STScI, Baltimore, USA)

Financial support

The Ψ2 program will subsidize the hotel and meals expenses for non-local participant.
The Ψ2 program does not reimburse nor make reservation for the trip to Paris.