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26 papers · 2 filters
A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067
R. Luque, H. P. Osborn, A. Leleu +149
Planets with radii between that of the Earth and Neptune (hereafter referred to as sub-Neptunes) are found in close-in orbits around more than half of all Sun-like stars. Yet, thei…
Protective Effects of Halite to Vacuum and Vacuum-Ultraviolet Radiation: A Potential Scenario During a Young Sun Superflare
Ximena C. Abrevaya, Douglas Galante, Paula M. Tribelli +16
Halite (NaCl mineral) has exhibited the potential to preserve microorganisms for millions of years on Earth. This mineral was also identified on Mars and in meteorites. In this stu…
Formation of wide-orbit giant planets in protoplanetary disks with a decreasing pebble flux
Nerea Gurrutxaga, Anders Johansen, Michiel Lambrechts +1
The presence of distant protoplanets may explain the observed gaps in the dust emission of protoplanetary disks. Here, we derive a novel analytical model to describe the temporal d…
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…
Planet formation throughout the Milky Way: Planet populations in the context of Galactic chemical evolution
Jesper Nielsen, Matthew Raymond Gent, Maria Bergemann +2
As stellar compositions evolve over time in the Milky Way, so will the resulting planet populations. In order to place planet formation in the context of Galactic chemical evolutio…
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…