K2-60b and epic 216468514b. A sub-jovian and a jovian planet from the k2 mission

Abstract

We report the characterization and independant detection of K2-60b, as well as the detection and characterization of EPIC 216468514b, two transiting hot gaseous planets from the K2 space mission. We confirm the planetary nature of the two systems and determine their fundamental parameters combining the K2 time-series data with FIES@NOT and HARPS-N@TNG spectroscopic observations. K2-60b has a radius of 0.683 +/- 0.037 RJup and a mass of 0.426 +/- 0.037 MJup and orbits a G4V star with an orbital period of 3.00267 +/- 0.00006 days. EPIC 216468514b has a radius of 1.44 +/- 0.15RJup and a mass of 0.84 +/- 0.08 MJup and orbits an F9 IV star every 3.31392 +/- 0.00002 days. K2-60b is among the few planets at the edge of the so-called "desert" of short-period sub Jovian planets. EPIC 216468514b is a highly inflated Jovian planet orbiting an evolved star about to leave the main sequence.

10 pages, 10 figures

References in corpus (13)

• The Dartmouth Stellar Evolution Database
• The K2 Mission: Characterization and Early results
• A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission
• Tidal Evolution of Close-in Extra-Solar Planets
• DAOSPEC: an automatic code for measuring equivalent widths in high-resolution stellar spectra
• Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler
• 197 Candidates and 104 Validated Planets in K2's First Five Fields
• Atomic and Molecular Data for Optical Stellar Spectroscopy
• Kepler423b: a half-Jupiter mass planet transiting a very old solar-like star
• A study of the performance of the transit detection tool DST in space-based surveys. Application of the CoRoT pipeline to Kepler data
• SOPHIE velocimetry of Kepler transit candidates. XV. KOI-614b, KOI-206b, and KOI-680b: a massive warm Jupiter orbiting a G0 metallic dwarf and two highly inflated planets with a distant companion around evolved F-type stars
• K2-98 b: A 32-M${}_{\oplus }$ Neptune-sized planet in a 10-day orbit transiting an F8 star
• Characterization of the Kepler-101 planetary system with HARPS-N. A hot super-Neptune with an Earth-sized low-mass companion

Cited by in corpus (11)

• ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
• GJ 367b: A dense ultra-short period sub-Earth planet transiting a nearby red dwarf star
• Mutual Orbital Inclinations Between Cold Jupiters and Inner Super-Earths
• Spatially Resolved Modeling of Optical Albedos for a Sample of Six Hot Jupiters
• TOI-2046b, TOI-1181b and TOI-1516b, three new hot Jupiters from \textit{TESS}: planets orbiting a young star, a subgiant and a normal star
• NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert
• A Mirage or an Oasis? Water Vapor in the Atmosphere of the Warm Neptune TOI-674 b
• Sub-Jovian desert of exoplanets at its boundaries. Parameter dependence along the main sequence
• TOI-837b is a Young Saturn-sized Exoplanet with a Massive 70 $M_{\oplus }$ Core
• K2-280b -- a low density warm sub-Saturn around a mildly evolved star
• TOI-3568 b: a super-Neptune in the sub-Jovian desert