Unredden-stars

This package allows to determine the interstellar extinction for stars lying on the color-color plane. Using:

1. theoretical stars sequence
2. reddening line slope
3. positions of stars

package functions calculate which part of the sequence the reddened stars come from. This allows to determine the color excess and hence the extinction of each star.

Installation

The software was written in Python 3. To install it, please type from the command line:

$ sudo pip3 install unred

or alternatively:

$ git clone https://github.com/pbrus/unredden-stars
$ cd unredden-stars
$ sudo python3 setup.py install

Additionally the software uses the following modules:

• numpy
• scipy

They can be easily installed too. Please run:

$ sudo pip3 install -r requirements.txt

Usage

It's recommended to use the unred_stars.py script which is a wrapper of all functions from the package. At the beginning call the script from the terminal window with the -h option:

$ python3 unred_stars.py -h

This will give you a description of available options. If you need to see the program in action immediately, you can use files from the example_data/ directory:

$ python3 unred_stars.py example_data/stars.dat example_data/ub_bv_dwarfs.dat 0.72 3.1

Moreover, you can filter the output (by extinction value for each star) using --min or --max option:

$ python3 unred_stars.py example_data/stars.dat example_data/ub_bv_dwarfs.dat 0.72 3.1 --min

I encourage to visit my website to see more detailed description of this program. The current link can be found on my GitHub profile.

License

Unredden-stars is licensed under the MIT license.