TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935

  title={TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935},
  author={Nicholas Scarsdale and Joseph M. Akana Murphy and Natalie M. Batalha and Ian J. M. Crossfield and Courtney D. Dressing and Benjamin J. Fulton and Andrew W. Howard and D. Huber and Howard T. Isaacson and Stephen R. Kane and Erik A. Petigura and Paul Robertson and Arpita Roy and Lauren M. Weiss and Corey Beard and Aida Behmard and Ashley Chontos and Jessie L. Christiansen and David R. Ciardi and Zachary R. Claytor and Karen A. Collins and Kevin I. Collins and Fei Dai and Paul A. Dalba and Diana Dragomir and Tara Fetherolf and Akihiko Fukui and Steven A. Giacalone and Erica J. Gonzales and Michelle L. Hill and Lea A. Hirsch and Eric L. N. Jensen and Molly R. Kosiarek and Jerome P. de Leon and Jack Lubin and Michael B. Lund and Rafael Luque and Andrew W. Mayo and Teo Movcnik and Mayuko Mori and Norio Narita and Grzegorz Nowak and Enric Pall'e and Markus Rabus and Lee J. Rosenthal and Ryan A. Rubenzahl and Joshua E. Schlieder and Avi Shporer and Keivan G. Stassun and Joseph D. Twicken and Gavin Wang and Daniel A. Yahalomi and Jon M. Jenkins and David W. Latham and George R. Ricker and Sara Seager and Roland K. Vanderspek and Joshua N. Winn},
  journal={The Astronomical Journal},
We present the discovery of two nearly identically sized sub-Neptune transiting planets orbiting HD 63935, a bright (V = 8.6 mag), Sun-like (T eff = 5560 K) star at 49 pc. TESS identified the first planet, HD 63935 b (TOI-509.01), in Sectors 7 and 34. We identified the second signal (HD 63935 c) in Keck High Resolution Echelle Spectrometer and Lick Automated Planet Finder radial velocity data as part of our follow-up campaign. It was subsequently confirmed with TESS photometry in Sector 34 as… 


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