Results 61 to 70 of about 226,391 (309)

Role of gaseous giants in the dynamical evolution of terrestrial planets and water delivery in the habitable zone [PDF]

Monthly notices of the Royal Astronomical Society, 2018
In the present research, we study the effects of a single giant planet in the dynamical evolution of water-rich embryos and planetesimals, located beyond the snow line of systems around Sun-like stars, in order to determine what kind of terrestrial-like ...
Mariana B. S'anchez, G. El'ia, L. Darriba   +2 more
semanticscholar   +1 more source

Habitable Moist Atmospheres on Terrestrial Planets near the Inner Edge of the Habitable Zone around M Dwarfs [PDF]

, 2017
Terrestrial planets in the habitable zones (HZs) of low-mass stars and cool dwarfs have received significant scrutiny recently. Transit spectroscopy of such planets with the James Webb Space Telescope (JWST) represents our best shot at obtaining the ...
R. Kopparapu, E. Wolf, G. Arney, N. Batalha, J. Haqq‐Misra, S. Grimm, K. Heng   +6 more
semanticscholar   +1 more source

Transit surveys for Earths in the habitable zones of white dwarfs

, 2011
To date the search for habitable Earth-like planets has primarily focused on nuclear burning stars. I propose that this search should be expanded to cool white dwarf stars that have expended their nuclear fuel. I define the continuously habitable zone of
Agol, Bergeron, Borucki, Debes, Di Stefano, Drake, Fabrycky, Ford, Guillochon, Hansen, Harris, Henry, Jura, Jurić, Kalirai, Li, Lissauer, Livio, LSST Science Collaborations & LSST Project, Menou, Miller-Ricci, Monteiro, Pepper, Perets, Phinney, Provencal, Raghavan, Salaris, Seager, Zhou, Zuckerman   +30 more
core   +1 more source

Silicon Carbide Photonic Crystal Photoelectrode

Advanced Science, EarlyView.
A 3C‐SiC photoelectrode with a slanted parabolic pore photonic crystal architecture enhances photogeneration for efficient photoelectrochemical water splitting through the remarkable light‐trapping capabilities of photonic crystal slow‐light modes.
Xiwen Zhang, Sajeev John
wiley   +1 more source

Architectural Decisions for Communications Satellite Constellations to Maintain Profitability While Serving Uncovered and Underserved Communities

International Journal of Satellite Communications and Networking, Volume 41, Issue 1, Page 82-97, January/February 2023., 2023
This paper analyzes which constellation characteristics provide the best global coverage at the lowest operational cost. Our analysis has found that geostationary and medium Earth orbit satellite constellations have the highest likelihood of profitability. LEO networks are more expensive, but if designed wisely, they can be competitive.
Inigo del Portillo, Sydney I. Dolan, Bruce G. Cameron, Edward F. Crawley   +3 more
wiley   +1 more source

Demarcating Circulation Regimes of Synchronously Rotating Terrestrial Planets within the Habitable Zone [PDF]

, 2017
We investigate the atmospheric dynamics of terrestrial planets in synchronous rotation within the habitable zone of low-mass stars using the Community Atmosphere Model. The surface temperature contrast between the day and night hemispheres decreases with
J. Haqq‐Misra, E. Wolf, M. Joshi, Xi Zhang, R. Kopparapu   +4 more
semanticscholar   +1 more source

Unique Na5−xSbSe Phase Enables High‐Rate Performance of Sb2Se3 Anodes in Na‐Ion Batteries

Advanced Energy Materials, EarlyView.
The (de)sodiation mechanism of Sb2Se3 is revealed through advanced operando techniques and ab initio simulations and underscores the value of complementary methods in exploring battery mechanisms. A new Na5−xSbSe phase is identified as the final sodiation product of Sb2Se3 anodes in Na‐ion batteries (NIBs), which enables the remarkably high‐rate ...
Amalie Skurtveit, Andrew Pastusic Jr., Anders Brennhagen, Faduma M. Maddar, Chris Erik Mohn, Abhoy Karmakar, Christopher A. O'Keefe, Ivana Hasa, Carmen Cavallo, Bjørnar Arstad, Helmer Fjellvåg, David S. Wragg, Alexey Y. Koposov   +12 more
wiley   +1 more source

Detectability of Earth-like Planets in Circumstellar Habitable Zones of Binary Star Systems with Sun-like Components

, 2012
Given the considerable percentage of stars that are members of binaries or stellar multiples in the Solar neighborhood, it is expected that many of these binaries host planets, possibly even habitable ones.
Eggl, Siegfried, Haghighipour, Nader, Pilat-Lohinger, Elke   +2 more
core   +6 more sources

Giant Planets: Good Neighbors for Habitable Worlds? [PDF]

, 2018
The presence of giant planets influences potentially habitable worlds in numerous ways. Massive celestial neighbors can facilitate the formation of planetary cores and modify the influx of asteroids and comets toward Earth analogs later on.
N. Georgakarakos, S. Eggl, I. Dobbs-Dixon   +2 more
semanticscholar   +1 more source

Earth: Atmospheric Evolution of a Habitable Planet [PDF]

, 2018
Our present-day atmosphere is often used as an analog for potentially habitable exoplanets, but Earth's atmosphere has changed dramatically throughout its 4.5 billion year history. For example, molecular oxygen is abundant in the atmosphere today but was absent on the early Earth. Meanwhile, the physical and chemical evolution of Earth's atmosphere has
Olson, Stephanie L, Schwieterman, Edward W, Reinhard, Christopher T, Lyons, Timothy W   +3 more
openaire   +7 more sources