The Exoplanet Orbit Database

Creators: Wright, J. T.; Fakhouri, O.; Marcy, G. W.; Han, E.; Feng, Y.; Johnson, John Asher; Howard, A. W.; Fischer, D. A.; Valenti, J. A.; Anderson, J.; Piskunov, N.

Abstract

We present a database of well-determined orbital parameters of exoplanets, and their host stars' properties. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the literature. We have also compiled fundamental transit parameters, stellar parameters, and the method used for the planets discovery. This Exoplanet Orbit Database includes all planets with robust, well measured orbital parameters reported in peer-reviewed articles. The database is available in a searchable, filterable, and sortable form online through the Exoplanets Data Explorer table, and the data can be plotted and explored through the Exoplanet Data Explorer plotter. We use the Data Explorer to generate publication-ready plots, giving three examples of the signatures of exoplanet migration and dynamical evolution: We illustrate the character of the apparent correlation between mass and period in exoplanet orbits, the different selection biases between radial velocity and transit surveys, and that the multiplanet systems show a distinct semimajor-axis distribution from apparently singleton systems.

Additional Information

© 2011 Astronomical Society of the Pacific. Received 2010 December 20; accepted 2011 February 7; published 2011 April 13. Draft version February 15, 2011. We would like to thank and acknowledge the tireless work of Jean Schneider, whose Extrasolar Planets Encyclopedia is an indispensable reference for all things exoplanetary. While we have complied every datum in the EOD ourselves from original sources, the Extrasolar Planets Encyclopedia has been a useful check on our numbers and an invaluable clearinghouse of every new planet announcement. We thank the anonymous referee for a quick and constructive referee's report that improved this manuscript and the Database. Special thanks go to R. Paul Butler who generated the first peer-reviewed catalog of exoplanets (Butler et al. 2002), from which the EOD is descended. We thank Scott Gaudi for helpful suggestions that improved this manuscript. We also thank the many users of the EOD and Data Explorers who sent in edits and suggestions. We cannot provide a comprehensive list, but such a list would include Michael Perryman, Jean Schneider, Ian Crossfield, Subo Dong, Wes Traub, and Marshall Perrin. We thank Jason Eastman for a particularly thorough cross-checking of our numbers. We have made extensive use of the NASA/IPAC/NExScI Star and Exoplanet Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration, and NASA's Astrophysics Data System Bibliographic Services. We thank the NStED administrators, in particular Stephen Kane and David Ciardi, for their as- sistance and support with the EOD and exoplanets.org, in particular for their help checking database numbers, agreeing to cross-link the websites, and especially for checking, archiving, and providing all published radial velocity data for every exoplanet. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work was partially supported by funding from the Center for Exoplanets and Habitable Worlds. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.

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