GalPaK 3D is a tool to extract the intrinsic (i.e. deconvolved) Galaxy Parameters and Kinematics from any 3-Dimensional data. The algorithm uses a disk parametric model with 10 free parameters (which can also be fixed independently) and a MCMC approach with non-traditional sampling laws in order to efficiently probe the parameter space.
More importantly, it uses the knowledge of the 3-dimensional spread-function to return the intrinsic galaxy properties and the intrinsic data-cube. The 3D spread-function class is flexible enough to handle any instrument.
One can use such an algorithm to constrain simultaneously the kinematics and morphological parameters of (non-merging, i.e. regular) galaxies observed in non-optimal seeing conditions. The algorithm can also be used on AO data or on high-quality, high-SNR data to look for non-axisymmetric structures in the residuals.
2019-10-20 ∾ New Features
galpak can work with EMCEE walkers (slow); and can read/write models and instrument from configuration file
2019-07-15 ∾ New Features
galpak has several new rotation curves: NFW, Burkert, freeman disk
2019-04-28 ∾ bug in PA for PSF
Since v1.12, the PA definition is anti-clockwise from y-axis (matching the disk model)
2019-04-04 ∾ New Features
galpak has several new features : autorun (API) for autotune randomscale / plot_geweke for convergence / plot_vprofile with errors from chain
2019-02-10 ∾ Python3 compatibility
galpak is Python >3.5 compatible.
2018-03-18 ∾ Python3 compatibility
galpak is Python3 compatible.
2015-05-14 ∾ Easier setup and
doit tasks and
python setup.py install.
2014-12-08 ∾ Support for ALMA
galpak can now work with ALMA data.
lsf_fwhm to something less than 1 channel.
2014-11-01 ∾ Generate videos
galpak can now generate a video of your run.
You'll probably need a very recent version of ffmpeg, or the video generation will fail after about 820 frames. This is for advanced users only, for now.
See the docstring of
galpak.GalPaK3D.film_images for more informations.
2014-10-13 ∾ Galpak gains in flexibility
galpak.GalaxyParameters are now much more flexible.
You can add new parameters and see them evolve through the MCMC. This flexibility comes at a small performance cost, which we tried to reduce as much as we could.
2014-07-21 ∾ The website is up
As of today, the
galpak python library
is available online.