دانلود رایگان مقاله ExoData: بسته پایتون برای رسیدگی به کاتولوگ سیارات فرا خورشیدی کلان داده

Abstract

Exoplanet science often involves using the system parameters of real exoplanets for tasks such as simulations, fitting routines, and target selection for proposals. Several exoplanet catalogues are already well established but often lack a version history and code friendly interfaces. Software that bridges the barrier between the catalogues and code enables users to improve the specific repeatability of results by facilitating the retrieval of exact system parameters used in articles results along with unifying the equations and software used. As exoplanet science moves towards large data, gone are the days where researchers can recall the current population from memory. An interface able to query the population now becomes invaluable for target selection and population analysis. ExoData is a Python interface and exploratory analysis tool for the Open Exoplanet Catalogue. It allows the loading of exoplanet systems into Python as objects (Planet, Star, Binary, etc.) from which common orbital and system equations can be calculated and measured parameters retrieved. This allows researchers to use tested code of the common equations they require (with units) and provides a large science input catalogue of planets for easy plotting and use in research. Advanced querying of targets is possible using the database and Python programming language. ExoData is also able to parse spectral types and fill in missing parameters according to programmable specifications and equations. Examples of use cases are integration of equations into data reduction pipelines, selecting planets for observing proposals and as an input catalogue to large scale simulation and analysis of planets. ExoData is a Python package available freely on GitHub. 1 It’s open source and community contributions are encouraged. The package can be easily installed using pip install exodata, detailed setup information is provided within.

5. Conclusion

ExoData provides a rounded tool for researchers wishing to use parameters of an exoplanet or exoplanetary system in code. Uses of the module include querying the exoplanet database for targets for observing proposals, running planets through a simulator and easy access to the catalogue for population statistics. By using a version controlled catalogue like the Open Exoplanet Catalogue and the ExoData interface researchers can more easily verify published results by easily obtaining the exact same planet and system parameters used by quoting both the catalogue and interface version. This is different from most catalogues which only show the latest version of which many unknown values may have changed. The interface builds upon the catalogue by making it easier to access parameters, calculate values and query the database.