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GUI Layout

Before starting the tutorials, it is kind to familiarize yourself with the basic parameters that exostriker uses to determine the goodness of a fit but also the ones that describe the planets orbits. All of these parameters can be seen on the homepage of exostriker.

Home Page of the GUI

Home Page of the GUI

Statistical parameters

  • rms: root-mean-square.
  • wrms: weighted root-mean-square.
  • χ2: chi-squared.
  • χ2 reduced: chi-squared reduced.
  • lnL : likelihood function.
  • BIC : Bayesian information criterion.
  • AIC : Akaike information criterion.
  • N data: number of data/observations.
  • DOF: degrees of freedom.

Control parameters

  • Simplex : fitting curves using the Simplex algorithm.
  • L-M : fitting curves using the Leveberg-Marquardt algorithm.
  • Keplerian : perform a Keplerian analysis.
  • Dynamical: perform a Dynamical analysis.
  • Initialize: ?
  • Fit: optimization parameter.
  • Run MCMC : generates samples using the Markov chain Monte Carlo algorithm.
  • Run Nest.samp : generates samples using the Nested sampling alogithm.
  • Run orbital evolution: perform parameter evolution.
  • RV auto fit: apply a curve to data.

Input/Output parameters

  • P [d]: planets period.
  • K [m/s]: planets RV amplitude.
  • e: eccentricity of the orbit.
  • ω [deg]: argument of periastron.
  • Ma [deg]: mean anomaly at the first observational epoch.
  • inc: inclination of the orbit.
  • Ω [deg]: longitude of the ascending node.
  • ώ [deg/yr]: rate of argument of periastron.
  • t0[d]: time of the first transit.
  • Rpl/R*: planet radius in units of stellar radius.
  • apl/R*: planet semimajor axis in units of stellar radius.
  • a [au]: semimajor axis.
  • m [Mjup] : planets mass.
  • tω[d]: ?

Data area

Depending on the type of data that you are trying to fit, you can choose between Radial Velocities (RV data), Transits (Transit data) and TTVs (Transit timing variations).

  • RV data

    Load RVs, include Offset/Jitter parameters, choose a RV trend, bin data.

  • Transit data

    Load Transits, include Offset/Jitter parameters, add Limb-darkening parameters to the model, detrend the data.

  • TTVs (Transit-Timing Variations)

    ?

  • Activity

    ?

  • Limits and Priors

    Set limits to the parameters range.

Help widgets area

  • Shells

    Exostriker offers 3 command-line interpreters.

    Jupyter: A Qt-based console for working with Jupyter kernels. It provides a number of enhancements only possible in a GUI, such as inline figures, proper multi-line editing with syntax highlighting, graphical calltips, and much more. For more information visit qtconsole documentation.

    Bash shell: Work in progress.

    pqg shell: PyQtGraph is a graphics and user interface library for Python. For more information visit pyqtgraph documentation.

  • Extra plots

    In this section plots of the most prominent peaks of the RV data are displayed phase folded (phase diagrams). Additionally, periodograms of the RV data are included.

  • Data inspector

    Inspect the data on your local machine through the options This computer or RVBank and load them to exostriker.

  • Text editor

    Through the text editor you can inspect and edit the data files. (Works for .dat, .tran, .vels extensions)

  • Calculator
  • Stdout/Stderr

    This section provides information about the version of the GUI you are using. Also informs about the progress of all processes.

    Warning

    Before starting any project make sure that you run the latest version of exostriker. You can be updated about the latest version of exostriker on exostriker's github page .

Plotting widgets area

  • RV

    RVs: Radial velocity graph.

    RVs o-c: Radial velocity residuals graph.

    GLS: Generalized Lomb-Scargle periodogram of the initial signal. Options including Cross hair & jitter to graph.

    GLS o-c: Generalized Lomb-Scargle periodogram of the residual signal. Adopt best parameter option ??

    MLP: Maximum Likelihood Periodogram.

    Window (DFT): ?

  • Transit

    Tran.: Transit graph.

    Tran. o-c: Transit residuals graph.

    TLS: Transit Least Squares of the initial signal.

    TLS o-c: Transit Least Squares of the residual signal.

  • TTV

    TTVs: TTVs graph.

    TTVs o-c: TTVs residuals graph.

  • Activity

    Time series: ?

    GLS: ?

    Correlations: ?

  • Sample corr.

    ?

  • Orb. Evol.

    Orbital parameters evolution graphs.

Input/Output parameters area

  • Planet param.

    Planetary parameters. The values change whenever a model is fitted. The values can also be fixed.

  • GP param.

    Gaussian processes parameters. ?

  • Stellar param.

    Edit stellar parameters depending on your system.

  • Models param.

    image

    Edit RV model parameters.

    Choose between different minimizers in SciPy param. section.

    Configure the GLS/MLP/TLS options and MCMC/NS simulation parameters.

    Set the maximum number of planets Auto fit to look for.

  • Limits and Priors

    Set bounds to planetary parameters before the simulations.

  • N-body

    Perform long-term stability check of multi-planet systems by setting the maximum time of evolution.

    Evolution of arbitrary planetary values can also be performed.

  • Plot opt.

    image

    Customize the RV/Transit/TTVs graph (Change the size of the data points, their transparency (Alpha).

    Enable cross hair.

    Shift the planets phase signal.

    Configure the model.

    Configure GLS/MLP/TLS/DFT graphs (Select the number of peaks that will be visible in the graphs).

    Show aliases in cross hair.

    Customize MCMC/NS sampling cornerplots and generate them.