A Quantitative Comparison of Exoplanet Catalogs

In this study, we investigated the differences between four commonly-used exoplanet catalogs (exoplanet.eu; exoplanetarchive.ipac.caltech.edu; openexoplanetcatalogue.com; exoplanets.org) using a Kolmogorov-Smirnov (KS) test.
We found a relatively good agreement in terms of the planetary parameters (mass, radius, period) and stellar properties (mass, temperature, metallicity), although a more careful analysis of the overlap and unique parts of each catalog revealed some differences. We quantified the statistical impact of these differences and their potential cause. We concluded that although statistical studies are unlikely to be significantly affected by the choice of catalog, it would be desirable to have one consistent catalog accepted by the general exoplanet community as a base for exoplanet statistics and comparison with theoretical predictions.

Dolev Bashi, Ravit Helled, Shay Zucker
(Submitted on 30 Aug 2018)

Comments: Published in Geosciences, special issue on “Detection and Characterization of Extrasolar Planets”
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
DOI: 10.3390/geosciences8090325
Cite as: arXiv:1808.10236 [astro-ph.EP] (or arXiv:1808.10236v1 [astro-ph.EP] for this version)
Submission history
From: Dolev Bashi [view email]
[v1] Thu, 30 Aug 2018 11:40:13 GMT (7686kb,D)
https://arxiv.org/abs/1808.10236