Three Warm Jupiters around Solar-analog Stars Detected with TESS

Jan Eberhardt, Melissa J. Hobson, Thomas Henning, Trifon Trifonov, Rafael Brahm, Nestor Espinoza, Andrés Jordán, Daniel Thorngren, Remo Burn, Felipe I. Rojas, Paula Sarkis, Martin Schlecker, Marcelo Tala Pinto, Khalid Barkaoui, Richard P. Schwarz, Olga Suarez, Tristan Guillot, Amaury H.M.J. Triaud, Maximilian N. Günther, Lyu AbeGavin Boyle, Rodrigo Leiva, Vincent Suc, Phil Evans, Nick Dunckel, Carl Ziegler, Ben Falk, William Fong, Alexander Rudat, Avi Shporer, Stephanie Striegel, David Watanabe, Jon M. Jenkins, Sara Seager, Joshua N. Winn

Research output: Contribution to journalArticlepeer-review

Abstract

We report the discovery and characterization of three giant exoplanets orbiting solar-analog stars, detected by the TESS space mission and confirmed through ground-based photometry and radial velocity measurements taken at La Silla observatory with FEROS. TOI-2373 b is a warm Jupiter orbiting its host star every ∼13.3 days, and is one of the most massive known exoplanet with a precisely determined mass and radius around a star similar to the Sun, with an estimated mass of m p = 9.3 − 0.2 + 0.2 M jup and a radius of r p = 0.93 − 0.2 + 0.2 R jup . With a mean density of ρ = 14.4 − 1.0 + 0.9 g cm − 3 , TOI-2373 b is among the densest planets discovered so far. TOI-2416 b orbits its host star on a moderately eccentric orbit with a period of ∼8.3 days and an eccentricity of e = 0.32 − 0.02 + 0.02 . TOI-2416 b is more massive than Jupiter with m p = 3.0 − 0.09 + 0.10 M jup , however is significantly smaller with a radius of r p = 0.88 − 0.02 + 0.02 , R jup , leading to a high mean density of ρ = 5.4 − 0.3 + 0.3 g cm − 3 . TOI-2524 b is a warm Jupiter near the hot Jupiter transition region, orbiting its star every ∼7.2 days on a circular orbit. It is less massive than Jupiter with a mass of m p = 0.64 − 0.04 + 0.04 M jup , and is consistent with an inflated radius of r p = 1.00 − 0.03 + 0.02 R jup , leading to a low mean density of ρ = 0.79 − 0.08 + 0.08 g cm − 3 . The newly discovered exoplanets TOI-2373 b, TOI-2416 b, and TOI-2524 b have estimated equilibrium temperatures of 860 − 10 + 10 K, 1080 − 10 + 10 K, and 1100 − 20 + 20 K, respectively, placing them in the sparsely populated transition zone between hot and warm Jupiters.

Original languageEnglish (US)
Article number271
JournalAstronomical Journal
Volume166
Issue number6
DOIs
StatePublished - Dec 1 2023

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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