General Astrophysics

RAMSES: an AMR code of general interest for astrophysics

The RAMSES code, developed under the responsibility of R. Teyssier, is a development platform for solving mainly hyperbolic equation systems in an adaptive mesh refinement structure (AMR). For the time being, the basic mesh is Cartesian. We have planned to extend it to cylindrical and spherical meshing in 2004. The modules that have been developed so far are being massively used in cosmology (p...

General relativistic hydrodynamics and magnetohydrodynamics: hyperbolic systems in relativistic astrophysics

Astrophysics.

Using the oscillation frequencies of α Cen A recently discovered by Bouchy & Carrier (2001, 2002), the available astrometric, photometric and spectroscopic data, we tried to improve the calibration of the visual binary system α Cen. With the revisited masses of Pour-baix et al. (2002) we do not succeed to obtain a solution satisfying all the seismic observational constraints. Relaxing the const...

Astrophysics.

ASTROPHYSICS The NASA Astrophysics Data System : Overview

The NASA Astrophysics Data System Abstract Service has become a key component of astronomical research. It provides bibliographic information daily, or near daily, to a majority of astronomical researchers worldwide. We describe the history of the development of the system and its current status. Urania (Boyce 1996), and the ADS role in the emerging electronic astronomical data environment are ...