The idea to provide a database for equations of state which can be used in all kinds of astrophysical applications has been born still during the lifetime of the ESF-funded European research network CompStar. While we experienced kind support from the community which gathered around this project CompOSE’s core team now consists of Stefan Typel (GSI, Germany), Micaela Oertel (LUTH, Observatoire de Paris, France), and Thomas Klähn (California State University Long Beach, USA), recently joined by Chikako Ishizuka (Tokyo Institute of Technology, Japan). You can reach this team of core members under the following e-mail address:

develop.compose (at)

The web site has been created by Thomas Klähn (University of Wroclaw, Poland), Jean-Yves Giot and Marco Mancini (LUTH, Observatoire de Paris, France)