Results 21 to 30 of about 252 (123)
LHS 475 b: A Potential Venus Analog Orbiting a Nearby M Dwarf
The Astronomical JournalBased on photometric observations by TESS, we present the discovery of a potential Venus analog transiting LHS 475, an M3 dwarf located 12.5 pc from the Sun. The mass of the star is 0.274 ± 0.015 M _☉ .
Kristo Ment +17 more
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The Astrophysical Journal Letters, 2023 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 radius and unveiling the inner architecture of the system, we ...
Elisa Goffo +40 more
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From Earths to Super-Earths: Five New Small Planets Transiting M Dwarf Stars
The Astronomical JournalEarth-sized planets transiting M dwarf stars present one of the best opportunities with current facilities for studying the atmospheric and bulk compositions of terrestrial worlds. Here, we statistically validate five new transiting Earth and super-Earth
Jonathan Gomez Barrientos +41 more
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Mitigating Worst-case Exozodiacal Dust Structure in High-contrast Images of Earth-like Exoplanets
The Astronomical Journal, 2023 Detecting Earth-like exoplanets in direct images of nearby Sun-like systems brings a unique set of challenges that must be addressed in the early phases of designing a space-based direct imaging mission.
Miles H. Currie +4 more
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The Planetary Science JournalTheoretical frameworks for reflection and emission spectroscopy of exoplanet surfaces are becoming increasingly important for the characterization of rocky exoplanets, especially with the rapid growth of the detected exoplanet population and ...
Leonardos Gkouvelis
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Photosynthesis in Hydrogen-Dominated Atmospheres
Life, 2014 The diversity of extrasolar planets discovered in the last decade shows that we should not be constrained to look for life in environments similar to early or present-day Earth.
William Bains, Sara Seager, Andras Zsom
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Early Results from the HUMDRUM Survey: A Small, Earth-mass Planet Orbits TOI-1450A
The Astronomical JournalM-dwarf stars provide us with an ideal opportunity to study nearby small planets. The HUnting for M Dwarf Rocky planets Using MAROON-X (HUMDRUM) survey uses the MAROON-X spectrograph, which is ideally suited to studying these stars, to measure precise ...
Madison Brady +25 more
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The Astrophysical Journal, 2023 The planetary infrared excess (PIE) technique has the potential to efficiently detect and characterize the thermal spectra of both transiting and non-transiting exoplanets. However, the technique has not been evaluated on multiplanet systems.
L. C. Mayorga +3 more
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Small and Close-in Planets are Uncommon Around A-type Stars
The Astronomical JournalThe Kepler and K2 missions enabled robust calculations of planet occurrence rates around FGKM-type stars. However, these missions observed too few stars with earlier spectral types to tightly constrain the occurrence rates of planets orbiting hotter ...
Steven Giacalone, Courtney D. Dressing
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The Planetary Science JournalIn the late stage of terrestrial planet formation, planets are predicted to undergo pairwise collisions known as giant impacts. Here, we present a high-resolution database of giant impacts for differentiated colliding bodies of iron–silicate composition,
Alexandre Emsenhuber +6 more
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