Arxiv:2009.08472V1 [Astro-Ph.EP] 17 Sep 2020 Further Constrain the Optical-To-Infrared Atmospheric Features of the Planet
Draft version September 22, 2020 Typeset using LATEX twocolumn style in AASTeX62 ACCESS: Confirmation of no potassium in the atmosphere of WASP-31b Chima D. McGruder,1, ∗ Mercedes López-Morales,1 Néstor Espinoza,2 Benjamin V. Rackham,3, y Dániel Apai,4, 5, 6 Andrés Jordán,7, 8 David J. Osip,9 Munazza K. Alam,1, ∗ Alex Bixel,4, 6 Jonathan J. Fortney,10 Gregory W. Henry,11 James Kirk,1 Nikole K. Lewis,12 Florian Rodler,13 and Ian C. Weaver1 1Center for Astrophysics j Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USA 2Space Telescope Science Institute (STScI), 3700 San Martin Dr, Baltimore, MD 21218 3Department of Earth, Atmospheric and Planetary Sciences, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 4Department of Astronomy/Steward Observatory, The University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA 5Lunar and Planetary Laboratory, The University of Arizona, 1640 E. Univ. Blvd, Tucson, AZ 85721 6Earths in Other Solar Systems Team, NASA Nexus for Exoplanet System Science 7Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, Santiago, Chile 8Millennium Institute for Astrophysics, Santiago, Chile 9Las Campanas Observatory, Carnegie Institution of Washington, Colina el Pino, Casilla 601 La Serena, Chile 10Department of Astronomy and Astrophysics, University of California, Santa Cruz, USA 11Center of Excellence in Information Systems, Tennessee State University, Nashville, TN 37209, USA 12Department of Astronomy and Carl Sagan Institute, Cornell University, 122 Sciences Drive, 14853, Ithaca, NY, USA 13European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago de Chile, Chile (Accepted 14 September 2020 by AJ) ABSTRACT We present a new optical (400–950 nm) transmission spectrum of the hot Jupiter WASP-31b (M=0.48 MJ; R= 1.54 RJ; P=3.41 days), obtained by combining four transits observations.
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