SpectroscopicBinarySystem 1.1.0

Python astronomy tools for spectroscopic binary system

Spectroscopic Binary System

Spectroscopic Binary System is a package intended to contain functionality and some common tools needed for performing astrophysics on spectroscopic binary stars with Python. It allows, among other things, to automatically measure the radial velocity of SB1 type systems and to find their orbital solution with BinaryStarSolver (https://github.com/NickMilsonPhysics/BinaryStarSolver)

Installation

To install spectroscopicbinarysystem with pip, run:

  # mac / unix
  pip install spectroscopicbinarysystem

  # windows
  py -m pip install spectroscopicbinarysystem

If you want to make sure none of your existing dependencies get upgraded, you can also do:

  # mac / unix
  pip install spectroscopicbinarysystem --no-deps 

  # windows
  py -m pip install spectroscopicbinarysystem --no-deps

Usage/Examples

Download sample data (see /examples/alphadra directory) or from the STAROS database (https://alphadra.staros-projects.org/)

And run this code :

from spectroscopicbinarysystem import SpectroscopicBinarySystem

sbs = SpectroscopicBinarySystem(
    object_name='hd123299',
    spectra_path='./examples/alphadra/',
    t0=2451441.804,
    period_guess=51,
    conf={
        "LAMBDA_REF": 6562.82,
        "LINE_FIT_MODEL": "voigt",
        "LINE_FIT_WINDOW_WIDTH": 10,
        "LINE_FIT_CONT_NORM_EXCLUDE_WIDTH": 1.5,
        "LINE_FIT_FWHM": .5,
        "RV_CORR_TYPE": "barycentric",
        "SB_TYPE": 1
    },
    debug=True)

# plot result with matplotlib and save the results
sbs.plotRadialVelocityCurve(title="α Dra - HD123299 - Phased radial velocities", 
                            subtitle=f"{sbs.getObservationCount()} observations collected from april 2022 to april 2023",
                            savefig=True)
 
# display result with plotly
sbs.plotlyRadialVelocityCurve(
    title="α Dra - HD123299 - Phased radial velocities")

# plot 2d dynamic spectrum
sbs.plotSpec2DFlux(
    title="α Dra - HD123299 - 2d dynamic spectrum",
    subtitle=f"{sbs.getObservationCount()} observations collected from april 2022 to april 2023",
    savefig=False
)