467.04 - A Small Transiting Planet Discovered by Citizen Scientists(Geert Barentsen)

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Jan 10th at 1:00 PM until 2:00 PM

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Author(s): G. Barentsen, NASA Ames Research Center, Mountain View, California, UNITED STATES|A. Feinstein, Tufts University, Medford, Massachusetts, UNITED STATES|J. Schlieder, NASA Goddard Space Flight Center, Greenbelt, Maryland, UNITED STATES|G. Barentsen, Bay Area Environmental Research Institute, Moffett Field, California, UNITED STATES|J. Livingston, University of Tokyo, Tokyo, California, JAPAN|D. Ciardi, J. Christiansen, Caltech/IPAC-NASA Exoplanet Science Institute, Pasadena, California, UNITED STATES|A. Howard, E. Petigura, California Institute of Technology, Pasadena, California, UNITED STATES|L. Arnold, University of the Virgin Islands, Saint Thomas, California, VIRGIN ISLANDS (U.S.)|M. Bristow, University of North Carolina at Asheville, Asheville, North Carolina, UNITED STATES|I. Crossfield, Massachusetts Institute of Technology, Cambridge, Massachusetts, UNITED STATES|C. Dressing, University of California at Berkeley, Berkeley, California, UNITED STATES|E.J. Gonzales, M. Kosiarek, University of California, Santa Cruz, Santa Cruz, California, UNITED STATES|G. Miller, University of Oxford, Oxford, California, UNITED KINGDOM|F. Morales, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, UNITED STATES|F. Morales, Moorpark College, Moorpark, California, UNITED STATES|B. Thackeray, University of Maryland College Park, College Park, Maryland, UNITED STATES|
Institution(s): 1. NASA Ames Research Center, Mountain View, CA, United States. 2. Tufts University, Medford, MA, United States. 3. NASA Goddard Space Flight Center, Greenbelt, MD, United States. 4. Bay Area Environmental Research Institute, Moffett Field, CA, United States. 5. University of Tokyo, Tokyo, Japan. 6. Caltech/IPAC-NASA Exoplanet Science Institute, Pasadena, CA, United States. 7. California Institute of Technology, Pasadena, CA, United States. 8. University of the Virgin Islands, Saint Thomas, Virgin Islands (U.S.). 9. University of North Carolina at Asheville, Asheville, NC, United States. 10. Massachusetts Institute of Technology, Cambridge, MA, United States. 11. University of California at Berkeley, Berkeley, CA, United States. 12. University of California, Santa Cruz, Santa Cruz, CA, United States. 13. University of Oxford, Oxford, United Kingdom. 14. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States. 15. Moorpark College, Moorpark, CA, United States. 16. University of Maryland College Park, College Park, MD, United States.
Contributing team(s): Citizen Scientists (Zooniverse)
The Kepler and K2 missions have provided the astronomical community with unprecedented amounts of data to search for transiting exoplanets and other astrophysical phenomena. Here, we present a low-mass binary system hosting a small transiting planet observed in K2 Campaign 4. The candidate was identified by citizen scientists using the Exoplanet Explorers project hosted on the Zooniverse. Follow-up observations and subsequent analyses validate the planet and indicate that it likely orbits the lower-mass companion star on a 31.34 day period. This orbit places it near the habitable zone of its host star. The planet resides in a system with a unique architecture and further follow-up may provide insight into its formation and evolution. Additionally, its estimated size straddles the observed gap in the planet radius distribution. Planets of this size occur less frequently and may be in a transient phase of radius evolution. This planet is the third identified by citizen scientists using Exoplanet Explorers and its discovery exemplifies the value of citizen science in the era of Kepler, K2, and TESS.