Results 91 to 100 of about 35,775 (180)

Exomoons and Exorings with the Habitable Worlds Observatory. II. Finding “Endor” with Lunar Eclipses

open access: yesThe Astronomical Journal
Giant planets in the habitable zone may host exomoons with conditions conducive to life. In this paper, we describe a method by which the Habitable Worlds Observatory (HWO) could detect such moons: broadband reflected-light lunar eclipses (e.g., the moon
Mary Anne Limbach   +8 more
doaj   +1 more source

Climates and Habitability of the Eccentric Super-Earth HD 20794 d: A Multi-parametric Investigation

open access: yesThe Astrophysical Journal
HD 20794 d is one of the best examples of a super-Earth planet in the habitable zone of a Sun-like star. Notably, due to the high eccentricity ( e = 0.45 ${}_{-0.11}^{+0.10}$ ) it partially lies in the conservative habitable zone, suggesting a ...
Lorenzo Biasiotti   +8 more
doaj   +1 more source

TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?

open access: yesThe Astrophysical Journal Letters
TRAPPIST-1 d is generally assumed to be at the boundary between a Venus-like world and an Earth-like world, although recently published works on TRAPPIST-1 b and c raise concerns that TRAPPIST-1 d may be similarly devoid of a substantial atmosphere ...
M. J. Way
doaj   +1 more source

The Interplanetary Habitable Zone

open access: yes
38 pages, 14 color figures, submitted to The Astrobiology ...
openaire   +2 more sources

Closeby Habitable Exoplanet Survey (CHES). I. Astrometric Noise and Planetary Detection Efficiency Due to Stellar Spots and Faculae

open access: yesThe Astronomical Journal
The Closeby Habitable Exoplanet Survey (CHES) is dedicated to the astrometric exploration for habitable-zone Earth-like planets orbiting solar-type stars in close proximity, achieving unprecedented microarcsecond precision.
Chunhui Bao   +6 more
doaj   +1 more source

Bioverse: Giant Magellan Telescope and Extremely Large Telescope Direct Imaging and High-resolution Spectroscopy Assessment—Surveying Exo-Earth O2 and Testing the Habitable Zone Oxygen Hypothesis

open access: yesThe Astronomical Journal
Biosignature detection in the atmospheres of Earth-like exoplanets is one of the most significant and ambitious goals for astronomy, astrobiology, and humanity. Molecular oxygen is among the strongest indicators of life on Earth, but it will be extremely
Kevin K. Hardegree-Ullman   +6 more
doaj   +1 more source

Habitable exoplanet - a statistical search for life

open access: yesFrontiers in Astronomy and Space Sciences
IntroductionThe identification of habitable exoplanets is an important challenge in modern space science, requiring the combination of planetary and stellar parameters to assess conditions that support life.MethodsUsing a dataset of 5867 exoplanets from ...
Prasenjit Banerjee   +1 more
doaj   +1 more source

No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion

open access: yesThe Astronomical Journal
Given the vast number of stars that exist within binary systems, it remains important to explore the effect of binary star environments on the formation and evolution of exoplanetary systems.
Stephen R. Kane   +5 more
doaj   +1 more source

Planetesimal Scattering Efficiency of Cold Giant Planet Architectures

open access: yesThe Astronomical Journal
The discovery of many exoplanets has revealed an incredible diversity of orbital architectures. These orbital configurations are intrinsically linked to the potential for habitable environments within the system, since the gravitational influence of the ...
Stephen R. Kane, Emma L. Miles
doaj   +1 more source

Potential Interior Structures and Habitability of Super-Earth Exoplanets LHS 1140 b, K2-18 b, TOI-1452 b, and TOI-1468 c

open access: yesThe Astrophysical Journal
We analyze four super-Earth exoplanets, LHS 1140 b, K2-18 b, TOI-1452 b, and TOI-1468 c, which orbit M dwarf stars in the habitable zone. Their relative proximity, within 40 pc, makes them prime candidates for follow-up observations and atmospheric and ...
Mangesh Daspute   +5 more
doaj   +1 more source

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