Regular user, head over to the latest release and download the stift.jar file. Explore, or read the manual.
StIFT is a tool for estimating stellar characteristics. 🌞
Methods of estimation are discussed in
Sichevskij, S. G.: "Determining basic characteristics of stars from evolutionary computations", Astronomy Reports (2017), vol. 61: 193. https://doi.org/10.1134/S1063772917030076
- Supported input: filling form, clicking graph or uploading input file
- Showing results in the result table
- Uploading custom grid data or using default grid data
- Graph representation of grid data
- Exporting result data
- Filtering results based on phase
- Filtering tracks based on phase
- Uncertainty estimation
- Text mode, fast mode
Running the application requires Java 11, consider updating JRE in case relevant error message pops up.
Open downloaded app by either double-clicking the stift.jar file or using command java -jar stift.jar.
If you want to work with the source code, build with mvn package.
In target folder run with java -jar stift-1.0-SNAPSHOT.jar or open the .jar file directly.
This app is the topic of my bachelor's thesis at FI MUNI. It should be useful to astrophysicists as some stellar characteristics cannot be directly observed and need to be estimated from known data. The process of estimation is called isochrone fitting and is step by step described in
MALKOV, O. Yu.; SICHEVSKIJ, S. G.; KOVALEVA, D. A.: "Parametrization of single and binary stars", Monthly Notices of the Royal Astronomical Society. (2009), vol. 401, no. 1: 695. https://doi.org/10.1111/j.1365-2966.2009.15696.x
Evolutionary tracks or isochrones can be imported as the grid data. The default grid data is extracted from PARSEC STELLAR EVOLUTION CODE:
BRESSAN, A. et al: "PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code", Monthly Notices of the Royal Astronomical Society. (2012), vol. 427, no. 1: 127. https://doi.org/10.1111/j.1365-2966.2012.21948.x
After the input is entered, four neighbours are found in the grid data and interpolated for line points estimation. Line points are then interpolated for final result estimation. The uncertainty is computed from the Monte Carlo simulation on a thousand of points with a normal distribution.
My thanks go to Ernst Paunzen for the insight and consultations and to Martin Kuba for technical advice and supervision.
MIT License
Copyright (c) 2021 Johana Supíková
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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