output
20032026
most citedSeven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1

1.6k citations

Showing 2023 · astro-ph.EPShow all

21 papers · 2 filters

astro-ph.EP2023

No random transits in CHEOPS observations of HD 139139

R. Alonso, S. Hoyer, M. Deleuil +78

HD 139139 (a.k.a. 'The Random Transiter') is a star that exhibited enigmatic transit-like features with no apparent periodicity in K2 data. The shallow depth of the events (2…

astro-ph.EP2023★ 29 cited

The Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b

Juan I. Espinoza-Retamal, Rafael Brahm, Cristobal Petrovich +8

High-eccentricity tidal migration predicts the existence of highly eccentric proto-hot Jupiters on the "tidal circularization track," meaning that they might eventually become hot…

astro-ph.EP2023★ 12 cited

Refining the properties of the TOI-178 system with CHEOPS and TESS

L. Delrez, A. Leleu, A. Brandeker +84

The TOI-178 system consists of a nearby late K-dwarf transited by six planets in the super-Earth to mini-Neptune regime, with orbital periods between 1.9 and 20.7 days. All planets…

astro-ph.EP2023★ 27 cited

An M dwarf accompanied by a close-in giant orbiter with SPECULOOS

Amaury H. M. J. Triaud, Georgina Dransfield, Taiki Kagetani +40

In the last decade, a dozen close-in giant planets have been discovered orbiting stars with spectral types ranging from M0 to M4, a mystery since known formation pathways do not pr…

astro-ph.EP2023★ 23 cited

Investigating the visible phase-curve variability of 55 Cnc e

E. A. Meier Valdés, B. M. Morris, B. -O. Demory +87

55 Cnc e is an ultra-short period super-Earth transiting a Sun-like star. Previous observations in the optical range detected a time-variable flux modulation that is phased with th…

astro-ph.EP2023★ 13 cited

TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680

M. Ghachoui, A. Soubkiou, R. D. Wells +52

We report the discovery by the TESS mission of a super-Earth on a 4.8-d orbit around an inactive M4.5 dwarf (TOI-1680) validated by ground-based facilities. The host star is locate…