MODEST: Modeling Stellar Evolution and (Hydro)dynamics

MODEST-1: Integrating Stellar Evolution and Stellar Dynamics

Piet Hut ∗ a , Michael M. Shara b , Sverre J. Aarseth c , Ralf S. Klessen d , James C. Lombardi Jr. e , Junichiro Makino f , Steve McMillan g , Onno R. Pols h , Peter J. Teuben i , Ronald F. Webbink j Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA Department of Astrophysics, American Museum of Natural History, New York, NY 10024, USA Institute of Astronomy, University of...

Smoothed Particle Hydrodynamics Calculations of Stellar Interactions

Smoothed Particle Hydrodynamics is a multidimensional Lagrangian method of numerical hydrodynamics that has been used to tackle a wide variety of problems in astrophysics. Here we develop the basic equations of the SPH scheme, and we discuss some of its numerical properties and limitations. As an illustration of typical astrophysical applications, we discuss recent calculations of stellar inter...

Stellar Structure and Evolution

The Modest Modeling Tool and Its Implementation

This paper is about the tool-suite Motor that supports the modeling and analysis of Modest specifications. In particular, we discuss its tool architecture, and the implementation details of the tool components that do already exist, in particular, the parser, the SOS implementation, an interactive simulator, and a state-space generator. As the expressiveness of Modest goes beyond existing notat...

FUors and Early Stellar Evolution

Ambartsumian was among the first researchers who recognized the importance and uniqueness of FUors, the term he coined for the rare outburst sources of the FU Orionis type. A wealth of observational data and concomitant theoretical work has advanced our understanding of FUors in the intervening almost 40 years. These results are summarized in this brief review, with special emphasis on observat...