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gsf: galactic structure finder

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Ada Coda
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gsf: galactic structure finder

Postby Ada Coda » Mon Jun 11, 2018 11:18 pm

gsf: galactic structure finder

Abstract: gsf applies Gaussian Mixture Models in the stellar kinematic space of normalized angular momentum and binding energy on NIHAO high resolution galaxies to separate the stars into multiple components. The gsf analysis package assumes that the simulation snapshot has been pre-processed with a halo finder. It is based on pynbody (ascl:1305.002) and the scikit-learnpython package for Machine Learning; after loading, orienting, and transforming a simulation snapshot to physical units, it runs the clustering algorithm and performs the direct N-body gravity force using all the particles in the given halo.

Credit: Obreja, Aura; Macciò, Andrea V.; Moster, Benjamin; Dutton, Aaron A.; Buck, Tobias; Stinson, Gregory S.; Wang, Liang


Bibcode: 2018ascl.soft06008O

ID: ascl:1806.008

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