Kepler-78 and the ultra-short-period planets

JN Winn, R Sanchis-Ojeda, S Rappaport - New Astronomy Reviews, 2018 - Elsevier
Compared to the Earth, the exoplanet Kepler-78b has a similar size (1.2 R⊕) and an orbital
period a thousand times shorter (8.5 h). It is currently the smallest planet for which the mass …

Revisited mass-radius relations for exoplanets below 120 M⊕

JF Otegi, F Bouchy, R Helled - Astronomy & Astrophysics, 2020 - aanda.org
The masses and radii of exoplanets are fundamental quantities needed for their
characterisation. Studying the different populations of exoplanets is important for …

A comparison of inner Solar System volcanism

PK Byrne - Nature Astronomy, 2020 - nature.com
The volcanic landforms, eruptive sites and longevity of activity on Mercury and the Moon
contrast substantially with those of Earth, Venus and Mars. Here, I synthesize global maps of …

Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley

V Van Eylen, N Astudillo-Defru, X Bonfils… - Monthly Notices of …, 2021 - academic.oup.com
We report on precise Doppler measurements of L231-32 (TOI-270), a nearby M dwarf (d= 22
pc, M⋆= 0.39 M⊙, R⋆= 0.38 R⊙), which hosts three transiting planets that were recently …

GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star

KWF Lam, S Csizmadia, N Astudillo-Defru, X Bonfils… - Science, 2021 - science.org
Ultrashort-period (USP) exoplanets have orbital periods shorter than 1 day. Precise masses
and radii of USP exoplanets could provide constraints on their unknown formation and …

Discovery of a third transiting planet in the Kepler-47 circumbinary system

JA Orosz, WF Welsh, N Haghighipour… - The Astronomical …, 2019 - iopscience.iop.org
Of the nine confirmed transiting circumbinary planet systems, only Kepler-47 is known to
contain more than one planet. Kepler-47 b (the" inner planet") has an orbital period of 49.5 …

Homogeneous analysis of hot earths: Masses, sizes, and compositions

F Dai, K Masuda, JN Winn, L Zeng - The Astrophysical Journal, 2019 - iopscience.iop.org
Terrestrial planets have been found orbiting Sun-like stars with extremely short periods—
some as short as 4 hr. These" ultra-short-period planets" or" hot Earths" are so strongly …

Chemical fingerprints of formation in rocky super-Earths' data

M Plotnykov, D Valencia - Monthly Notices of the Royal …, 2020 - academic.oup.com
The composition of rocky exoplanets in the context of stars' composition provides important
constraints to formation theories. In this study, we select a sample of exoplanets with mass …

Company for the ultra-high density, ultra-short period sub-Earth GJ 367 b: discovery of two additional low-mass planets at 11.5 and 34 days

E Goffo, D Gandolfi, JA Egger, AJ Mustill… - The Astrophysical …, 2023 - iopscience.iop.org
GJ 367 is a bright (V≈ 10.2) M1 V star that has been recently found to host a transiting ultra-
short period sub-Earth on a 7.7 hr orbit. With the aim of improving the planetary mass and …

A Comparison of the Composition of Planets in Single-planet and Multiplanet Systems Orbiting M dwarfs

RR Martínez, DV Martin, BS Gaudi… - The Astronomical …, 2023 - iopscience.iop.org
We investigate and compare the composition of M-dwarf planets in systems with only one
known planet (" singles") to those residing in multiplanet systems (" multis") and the …