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Related papers: Can Moons Exist around the Habitable-zone Planet K…

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Assuming our Solar System as typical, exomoons may outnumber exoplanets. If their habitability fraction is similar, they would thus constitute the largest portion of habitable real estate in the Universe. Icy moons in our Solar System, such…

Earth and Planetary Astrophysics · Physics 2020-04-29 J. Tjoa , M. Mueller , F. F. S. van der Tak

It is conceivable that a few thousand confirmed exoplanets initially harboured satellites similar to the moons of the Solar system or larger. Could some of them have survived over the aeons of dynamical evolution to the present day? The…

Earth and Planetary Astrophysics · Physics 2023-04-05 Valeri V. Makarov , Michael Efroimsky

Tides raised on a planet by its host star's gravity can reduce a planet's orbital semi-major axis and eccentricity. This effect is only relevant for planets orbiting very close to their host stars. The habitable zones of low-mass stars are…

Astrophysics · Physics 2009-11-13 Rory Barnes , Sean N. Raymond , Brian Jackson , Richard Greenberg

We discuss the possibility of screening the atmosphere of exomoons for habitability. We concentrate on Earth-like satellites of extrasolar giant planets (EGP) which orbit in the Habitable Zone of their host stars. The detectability of…

Earth and Planetary Astrophysics · Physics 2015-05-14 L. Kaltenegger

The search for life outside of the Solar System should not be restricted to exclusively planetary bodies; large moons of extrasolar planets may also be common habitable environments throughout the Galaxy. Extrasolar moons, or exomoons, may…

Earth and Planetary Astrophysics · Physics 2009-11-30 David M. Kipping , Stephen J. Fossey , Giammarco Campanella , Jean Schneider , Giovanna Tinetti

Jupiter and Saturn play host to an impressive array of satellites, making it reasonable to suspect that similar systems of moons might exist around giant extrasolar planets. Furthermore, a significant population of such planets is known to…

Earth and Planetary Astrophysics · Physics 2016-01-27 Christopher Spalding , Konstantin Batygin , Fred C. Adams

We demonstrate that the extension of the Habitable Zone (HZ) due to the presence of liquid water on the night side of tidally locked planets, modelled in this and earlier works, significantly increases the number of potentially habitable…

Earth and Planetary Astrophysics · Physics 2025-10-02 Amri Wandel

Transiting exoplanets in young open clusters present opportunities to study how exoplanets evolve over their lifetimes. Recently, significant progress detecting transiting planets in young open clusters has been made with the K2 mission,…

While small, Neptune-like planets are among the most abundant exoplanets, our understanding of their atmospheric structure and dynamics remains sparse. In particular, many unknowns remain on the way moist convection works in these…

Moons orbiting exoplanets ("exomoons") may hold clues about planet formation, migration, and habitability. In this work, we investigate the plausibility of exomoons orbiting the temperate ($T_\text{eq}=294$ K) giant ($R = 9.2$ R$_\oplus$)…

The search for habitable environments and biomarkers in exoplanetary atmospheres is the holy grail of exoplanet science. The detection of atmospheric signatures of habitable Earth-like exoplanets is challenging due to their small…

Earth and Planetary Astrophysics · Physics 2023-10-05 Nikku Madhusudhan , Subhajit Sarkar , Savvas Constantinou , Måns Holmberg , Anjali A. A. Piette , Julianne I. Moses

Terrestrial planets are more likely to be detected if they orbit M dwarfs due to the favorable planet/star size and mass ratios. However, M dwarf habitable zones are significantly closer to the star than the one around our Sun, which leads…

Earth-scale planets in the classical habitable zone (HZ) are more likely to be habitable if they possess active geophysics. Without a constant internal energy source, planets cool as they age, eventually terminating tectonic activity and…

Earth and Planetary Astrophysics · Physics 2015-06-18 Christa Van Laerhoven , Rory Barnes , Richard Greenberg

The habitable zone for exomoons with Earth-like properties is a non-trivial manifold, compared to that of Earth-like exoplanets. The presence of tidal heating, eclipses and planetary illumination in the exomoon energy budget combine to…

Earth and Planetary Astrophysics · Physics 2016-02-17 Duncan Forgan , Vera Dobos

The prime Kepler mission revealed that small planets (<4 R_earth) are common, especially around low-mass M dwarfs. K2, the re-purposed Kepler mission, continues this exploration of small planets around small stars. Here we combine K2…

In recent years, there has been interest in Earth-like exoplanets in the habitable zones of low mass stars ($\sim0.1-0.6\,M_\odot$). Furthermore, it has been argued that a large moon may be important for stabilizing conditions on a planet…

Earth and Planetary Astrophysics · Physics 2018-07-25 Anthony L. Piro

K2-18b lies near the radius valley that separates super-Earths and sub-Neptunes, marking a key transitional regime in planetary and atmospheric composition. The system offers a valuable opportunity to study how M-dwarf high-energy stellar…

Earth and Planetary Astrophysics · Physics 2026-03-11 S. Rukdee , M. Güdel , I. Vilović , K. Poppenhäger , S. Boro Saikia , J. Buchner , B. Stelzer , G. Roccetti , J. V. Seidel , V. Burwitz

The role of stellar age in the measured properties and occurrence rates of exoplanets is not well understood. This is in part due to a paucity of known young planets and the uncertainties in age-dating for most exoplanet host stars.…

Our knowledge of planets' orbital dynamics, which was based on Solar System studies, has been challenged by the diversity of exoplanetary systems. Around cool and ultra cool dwarfs, the influence of tides on the orbital and spin evolution…

Earth and Planetary Astrophysics · Physics 2014-12-02 Emeline Bolmont , Sean N. Raymond , Franck Selsis

In our search for life beyond the Solar System, certain planetary bodies may be more conducive to life than Earth. However, the observability of these `superhabitable' planets in the habitable zones around K dwarf stars has not been fully…

Earth and Planetary Astrophysics · Physics 2025-01-07 Iva Vilović , Jayesh Goyal , René Heller , Fanny Marie von Schauenburg