7 papers · 1 filter
Galaxies and Genes: Towards an Automatic Modeling of Interacting Galaxies
Ch. Theis, Ch. Gerds, Ch. Spinneker
The main problems in modeling interacting galaxies are the extended parameter space and the fairly high CPU costs of self-consistent N-body simulations. Therefore, traditional mode…
Formation of Twin Clusters in a Galactic Tidal Field
Christian Theis
The formation of globular clusters is still an unsolved problem. Though most scenarios assume a massive molecular cloud as the progenitor, it is unclear, how the cloud is transform…
How to Form (Twin) Globular Clusters?
Christian Theis
Though it is generally assumed that massive molecular clouds are the progenitors of globular clusters, their detailed formation mechanism is still unclear. Standard scenarios based…
Studies of Binary Star Cluster Candidates in the Bar of the LMC. I: SL 353 & SL 349
Andrea Dieball, Eva K. Grebel, Christian Theis
We present a detailed study of the cluster pair SL 353 & SL 349. This candidate binary cluster is located at the northwestern rim of the LMC bar. Based on photometric data we find…
Modeling Interacting Galaxies Using a Parallel Genetic Algorithm
Christian Theis, Stefan Harfst
Modeling of interacting galaxies suffers from an extended parameter space prohibiting traditional grid based search strategies. As an alternative approach a combination of a Geneti…
Modeling Encounters of Galaxies: The Case of NGC4449
Christian Theis
(abridged) Several N-body methods were combined in order to develop a method for the determination of the parameters of interacting galaxies. This method has been applied to the HI…