kinesis
Kinematic modelling of clusters with the Gaia data.
Kinesis is a package for fitting the internal kinematics of a star cluster with astrometry and (incomplete) radial velocity data of its members. In the most general model, the stars can be a mixture of background (contamination) and the cluster, for which the (3,3) velocity dispersion matrix and velocity gradient (dv_x/dx, dv_y/dx, ...) are included. Please refer to Oh & Evans 2020 for full details. There are also simpler versions of the most general model and utilities to generate mock clusters and mock observations.
Check out the documentation (it is under development and may be incomplete).
Attribution
If you make use of this code, please cite Oh & Evans 2020. The bibtex entry is:
@ARTICLE{2020MNRAS.498.1920O,
author = {{Oh}, Semyeong and {Evans}, Neil Wyn},
title = "{Kinematic modelling of clusters with Gaia: the death throes of the Hyades}",
journal = {\mnras},
keywords = {methods: data analysis, software: data analysis, astrometry, stars: distances, stars: fundamental parameters, open clusters and associations: individual: Hyades, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
year = 2020,
month = oct,
volume = {498},
number = {2},
pages = {1920-1938},
doi = {10.1093/mnras/staa2381},
archivePrefix = {arXiv},
eprint = {2007.02969},
primaryClass = {astro-ph.SR},
adsurl = {https://ui.adsabs.harvard.edu/abs/2020MNRAS.498.1920O},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}