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TOI-1670 c, a 40 day Orbital Period Warm Jupiter in a Compact System, Is Well Aligned

  • Jack Lubin
  • , Xian Yu Wang
  • , Malena Rice
  • , Jiayin Dong
  • , Songhu Wang
  • , Brandon T. Radzom
  • , Paul Robertson
  • , Gudmundur Stefansson
  • , Jaime A. Alvarado-Montes
  • , Corey Beard
  • , Chad F. Bender
  • , Arvind F. Gupta
  • , Samuel Halverson
  • , Shubham Kanodia
  • , Dan Li
  • , Andrea S.J. Lin
  • , Sarah E. Logsdon
  • , Emily Lubar
  • , Suvrath Mahadevan
  • , Joe P. Ninan
  • Jayadev Rajagopal, Arpita Roy, Christian Schwab, Jason T. Wright

Research output: Contribution to journalArticlepeer-review

Abstract

We report the measurement of the sky-projected obliquity angle λ of the warm Jovian exoplanet TOI-1670 c via the Rossiter-McLaughlin effect. We observed the transit window during UT 2023 April 20 for 7 continuous hours with NEID on the 3.5 m WIYN Telescope at Kitt Peak National Observatory. TOI-1670 hosts a sub-Neptune (P ∼ 11 days; planet b) interior to the warm Jovian (P ∼ 40 days; planet c), which presents an opportunity to investigate the dynamics of a warm Jupiter with an inner companion. Additionally, TOI-1670 c is now among the longest-period planets to date to have its sky-projected obliquity angle measured. We find planet c is well aligned to the host star, with λ = − 0.°3 ± 2.°2. TOI-1670 c joins a growing census of aligned warm Jupiters around single stars and aligned planets in multiplanet systems.

Original languageEnglish (US)
Article numberL5
JournalAstrophysical Journal Letters
Volume959
Issue number1
DOIs
StatePublished - Dec 1 2023

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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