The Aligned Orbit of WASP-148b, the Only Known Hot Jupiter with a nearby Warm Jupiter Companion, from NEID and HIRES

  title={The Aligned Orbit of WASP-148b, the Only Known Hot Jupiter with a nearby Warm Jupiter Companion, from NEID and HIRES},
  author={Xian-Yu Wang and Malena Rice and Songhu Wang and Bonan Pu and Gudhmundur Stef'ansson and Suvrath Mahadevan and Steven A. Giacalone and Zhen-Yu Wu and Thomas M. Esposito and Paul A. Dalba and Arin Avsar and Bradford Holden and Brian A. Skiff and Thomas A. Polakis and Kevin Voeller and Sarah E. Logsdon and Jessica Klusmeyer and Heidi Schweiker and Dong-Hong Wu and Corey Beard and Fei Dai and Jack Lubin and Lauren M. Weiss and Chad F. Bender and Cullen H. Blake and Courtney D. Dressing and Samuel Halverson and Andrew W. Howard and Daniel Huber and Howard T. Isaacson and James A. G. Jackman and Michael W. McElwain and Jayadev Rajagopal and Paul Robertson and Christian Schwab and Evgenya L. Shkolnik and Jason T. Wright and Gregory P. Laughlin},
  journal={The Astrophysical Journal Letters},
We present spectroscopic measurements of the Rossiter–McLaughlin effect for WASP-148b, the only known hot Jupiter with a nearby warm-Jupiter companion, from the WIYN/NEID and Keck/HIRES instruments. This is one of the first scientific results reported from the newly commissioned NEID spectrograph, as well as the second obliquity constraint for a hot Jupiter system with a close-in companion, after WASP-47. WASP-148b is consistent with being in alignment with the sky-projected spin axis of the… 
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