Sporadic Spin-orbit Variations in Compact Multiplanet Systems and Their Influence on Exoplanet Climate [PDF]
Astrophysical Journal Letters, 2023 Climate modeling has shown that tidally influenced terrestrial exoplanets, particularly those orbiting M-dwarfs, have unique atmospheric dynamics and surface conditions that may enhance their likelihood to host viable habitats.
Howard Chen +3 more
semanticscholar +1 more source
Evolution of Planetary Obliquity: The Eccentric Kozai–Lidov Mechanism Coupled with Tide
The Astrophysical Journal, 2023 Planetary obliquity plays a significant role in determining the physical properties of planetary surfaces and climate. As direct detection is constrained due to the present observation accuracy, kinetic theories are helpful for predicting the evolution ...
Xiumin Huang +4 more
doaj +1 more source
Early evolution of purple retinal pigments on Earth and implications for exoplanet biosignatures [PDF]
International Journal of Astrobiology, 2018 We propose that retinal-based phototrophy arose early in the evolution of life on Earth, profoundly impacting the development of photosynthesis and creating implications for the search for life beyond our planet.
S. DasSarma, E. Schwieterman
semanticscholar +1 more source
NIGHT: a compact, near-infrared, high-resolution spectrograph to survey helium in exoplanet systems [PDF]
, 2023 Among highly irradiated exoplanets, some have been found to undergo significant hydrodynamic expansion traced by atmospheric escape. To better understand these processes in the context of planetary evolution, we propose NIGHT (the Near-Infrared Gatherer ...
C. F. Jentink +7 more
semanticscholar +1 more source
Tidal evolution of close-in exoplanets and host stars
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT The evolution of exoplanetary systems with a close-in planet is ruled by the tides mutually raised on the two bodies and by the magnetic braking of the host star. This paper deals with consequences of this evolution and some features that can be observed in the distribution of the systems' two main periods: the orbital period
Ferraz Mello, S, Beauge, Cristian
openaire +3 more sources
Analysis of the orbital evolution of exoplanets [PDF]
Computational and Applied Mathematics, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carvalho, J. P.S. +4 more
openaire +2 more sources
Let the Great World Spin: Revealing the Stormy, Turbulent Nature of Young Giant Exoplanet Analogs with the Spitzer Space Telescope [PDF]
Astrophysical Journal, 2022 We present a survey for photometric variability in young, low-mass brown dwarfs with the Spitzer Space Telescope. The 23 objects in our sample show robust signatures of youth and share properties with directly imaged exoplanets.
J. Vos +7 more
semanticscholar +1 more source
Dynamical Evolution of Closely Packed Multiple Planetary Systems Subject to Atmospheric Mass Loss
The Astronomical Journal, 2023 A gap in exoplanets’ radius distribution has been widely attributed to the photoevaporation threshold of their progenitors’ gaseous envelope. Giant impacts can also lead to substantial mass loss.
Su Wang, D. N. C. Lin
doaj +1 more source
Dust Growth and Evolution in Protoplanetary Disks [PDF]
Annual Review of Astronomy and Astrophysics, 2023 Over the past decade, advancement of observational capabilities, specifically the Atacama Large Millimeter/submillimeter Array (ALMA) and Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) instruments, alongside theoretical innovations like ...
T. Birnstiel
semanticscholar +1 more source
Plausible Constraints on the Range of Bulk Terrestrial Exoplanet Compositions in the Solar Neighborhood [PDF]
Astrophysical Journal, 2022 Rocky planet compositions regulate planetary evolution by affecting core sizes, mantle properties, and melting behaviors. Yet, quantitative treatments of this aspect of exoplanet studies remain generally underexplored.
R. Spaargaren +4 more
semanticscholar +1 more source