TIC65910228b: A single-transit discovery of a massive long-period warm Jupiter with TESS
Felipe I. Rojas, Rafael Brahm, Mat\'ias I. Jones, M\'arcio Catelan, Jozef Liptak, Lorena Acu\~na, Jan Eberhardt, N\'estor Espinoza, Thomas Henning, Andr\'es Jord\'an, Yared Reinarz, Marcelo Tala Pinto, Trifon Trifonov, Michaela V\'itkov\'a, Luca Antonucci, Gaspar Bakos

TL;DR
This paper reports the discovery and detailed characterization of TIC65910228b, a long-period warm Jupiter with a mass of about 4.55 Jupiter masses, orbiting an evolved star every 180 days, highlighting the potential of single-transit detections.
Contribution
It confirms a new long-period warm Jupiter from a single transit in TESS data and provides detailed orbital and physical parameters through follow-up observations.
Findings
Discovered a warm Jupiter with 4.55 M_J and 1.088 R_J
Orbits every 180.52 days with eccentricity 0.25
Expands the sample of long-period transiting giant planets
Abstract
Context. Warm Jupiters are excellent case studies for the investigation of giant planet internal structures and formation theories. However, the sample of long-period transiting giants is still small today for a better understanding of this population. Aims. Starting from a single transit found in the Transiting Exoplanet Survey Satellite (TESS) data, we confirm the planetary nature of the signal and measure its orbital parameters, mass, and radius. We put this system in the context of long-period giant transiting planets and analyzed the viability to sustain atmospheric or dynamical follow-up. Methods. We carried out a spectroscopic follow-up using FEROS and PLATOSpec to obtain precise radial velocities. We added a photometric follow-up with HATPI and Observatoire Moana to obtain a more precise estimate of the orbital period. We derived the orbital and physical parameters through a…
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Scientific Research and Discoveries
