PyKinematicalBroadening 0.0.8

Extragalactic Kinematics is an exciting tool that utilizes a kernel (e.g., Gaussian) to broaden models in velocity space, resulting in a highly accurate and detailed output. With this repository, you can easily apply kinematical broadening to your models and gain valuable insights into extragalactic kinematics.

PyKinematicalBroadening

email: [e-mail], [e-mail]

© Copyright ®

J.G. - Jean Gomes

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RESUME

PyKinematicalBroadening is an Extragalactic Kinematics repository for applying a kernel in velocity space to models in order to obtain the respective broadened model. This is a python code that performs kinematical broadening of a spectrum by applying a kernel in velocity space to a model, and obtaining the respective broadened model. The code defines the function broadening, which performs the convolution with a Gaussian kernel. The kernel is generated using a certain number of points, which can be set with the Ni_Gauss parameter. The code then reads in a test spectrum from a file, interpolates it onto a set of equally spaced wavelength values, and then plots the original and broadened spectra for different velocity dispersions.

In detail, the GaussianConvolution function convolves a given input spectrum fluxes_o defined at wavelengths lambda_o with a Gaussian kernel of width vd_sigma and mean velocity vc0_gals. The kernel is defined with Ni_Gauss points, which should be at least as large as vd_sigma. The output spectrum is defined at wavelengths lambda_s, and is returned as fluxes_s. The fill_val parameter defines the value to use for regions outside of the original wavelength range, and verbosity controls the level of detail of console output.

The main code reads in a test spectrum from a file and interpolates it onto a set of equally spaced wavelength values. It then loops over different velocity dispersions and calls 'broadening' for each one, broadening the spectrum and plotting the results.

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INSTALLATION

You can easily install PyKinematicalBroadening by using pip - PyPI - The Python Package Index:

pip install PyKinematicalBroadening

or by using a generated conda repository https://anaconda.org/neutrinomuon/PyKinematicalBroadening:

conda install -c neutrinomuon PyKinematicalBroadening

OBS.: Linux, OS-X ad Windows pre-compilations available in conda.

You can also clone the repository and install by yourself in your machine:

git clone https://github.com/neutrinomuon/PyKinematicalBroadening
python setup.py install

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EXAMPLE

Example of the test_spectrum test_spectrum.spec successively broadened by different velocity dispersions in [km/s]. The code is not optimized for cpu speed, but it shows the principle of how it works.

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STRUCTURE

PyKinematicalBroadening
├── MANIFEST.in
├── dist
│   ├── PyKinematicalBroadening-0.0.3.tar.gz
│   ├── PyKinematicalBroadening-0.0.5.tar.gz
│   ├── PyKinematicalBroadening-0.0.6.tar.gz
│   └── PyKinematicalBroadening-0.0.4.tar.gz
├── README.md
├── figures
│   ├── KinematicalBroadening.png
│   └── cc_logo.png
├── PyKinematicalBroadening.egg-info
│   ├── PKG-INFO
│   ├── dependency_links.txt
│   ├── SOURCES.txt
│   ├── top_level.txt
│   └── requires.txt
├── LICENSE.txt
├── setup.py
├── tutorials
│   ├── .ipynb_checkpoints
│   │   └── Example 1 - Kinematical Broadening-checkpoint.ipynb
│   └── Example 1 - Kinematical Broadening.ipynb
├── pykinematicalbroadening
│   ├── win-32
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-armv7l
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-armv6l
│   │   ├── .projectignore
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-s390x
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-ppc64
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-aarch64
│   │   ├── .projectignore
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-32
│   │   ├── .projectignore
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── linux-64
│   │   ├── .projectignore
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── osx-64
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── meta.yaml
│   ├── win-64
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   ├── README.txt
│   ├── linux-ppc64le
│   │   └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
│   └── osx-arm64
│       └── pykinematicalbroadening-0.0.5-py39_0.tar.bz2
├── Pykinematicalbroadening.egg-info
│   ├── PKG-INFO
│   ├── dependency_links.txt
│   ├── SOURCES.txt
│   ├── top_level.txt
│   └── requires.txt
├── src
│   └── python
│       ├── __pycache__
│       ├── test_spectrum.spec
│       ├── __init__.py
│       └── PyKinematicalBroadening.py
├── version.txt
└── build
    └── lib
        ├── Pykinematicalbroadening
        └── PyKinematicalBroadening

26 directories, 44 files

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REFERENCES

Tonry, J., & Davis, M. 1979, AJ, 84, 1511

van der Marel, R. P., & Franx, M. 1993, ApJ, 407, 525

Emsellem, E., et al. "The SAURON project - III. Integral-field absorption-line kinematics of 48 elliptical and lenticular galaxies." Monthly Notices of the Royal Astronomical Society, Volume 352, Issue 3, pp. 721-743. DOI:
10.1111/j.1365-2966.2004.07948.x ; 10.48550/arXiv.astro-ph/0404034. Available at: https://ui.adsabs.harvard.edu/abs/2004MNRAS.352..721E/abstract.

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LICENSE

Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND 4.0)

Creative Commons Attribution-NonCommercial-NoDerivs (CC-BY-NC-ND)