Results 21 to 30 of about 4,665,991 (250)
Planet formation – implication of statistical properties of exoplanets [PDF]
Journal of Physics: Conference Series, 2010 Models of planetary formation are developed based on the observation of our Solar System, star-forming regions and circumstellar disks and on an the ever increasing number of exoplanetary systems. The solar nebula theory and the planetesimal hypothesis are discussed.
Á. Süli
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C/O Ratios and the formation of wide separation exoplanets [PDF]
The Astrophysical Journal LettersAbstract The gas and solid-state C/O ratios provide context to potentially link the atmospheric composition of planets to that of the natal disk. We provide a synthesis of extant estimates of the gaseous C/O and C/H ratios in planet-forming disks obtained primarily through analysis of Atacama Large Millimeter/submillimeter Array ...
Edwin A. Bergin +3 more
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Characterization of exoplanets from their formation [PDF]
Astronomy & Astrophysics, 2017 44 pages, 26 figures (journal format). A&A in print.
C. Mordasini +2 more
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Differentiation of silicates and iron during formation of Mercury and high-density exoplanets [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Recent MESSENGER observations confirmed that Mercury is dominated by a disproportionally large iron-rich core, and also showed a surprisingly high content of a moderately volatile element K on the planet's surface. This latter observation challenges several popular models for the iron-rich composition of the planet that invoke extreme heating of the ...
Sergei Nayakshin
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The eccentricity-mass distribution of exoplanets: signatures of different formation mechanisms? [PDF]
Astronomy & Astrophysics, 2007 We examine the distributions of eccentricity and host star metallicity of exoplanets as a function of their mass. Planets with M sin i >~ 4 M_J have an eccentricity distribution consistent with that of binary stars, while planets with M sin ...
I. Ribas, Jordi Miralda‐Escudé
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Characterisation of exoplanet host stars: A window into planet formation [PDF]
Proceedings of the International Astronomical Union, 2017 AbstractThe detection of thousands of planets orbiting stars other than the Sun has shown that planets are common throughout the Galaxy. However, the diversity of systems found has also raised many questions regarding the process of planet formation and evolution. Interestingly, but perhaps not unexpectedly, crucial information to constraint the planet
N. C. Santos
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Methane throughout the atmosphere of the warm exoplanet WASP-80b [PDF]
Nature, 2023 Transmission and emission spectra of the 825 K warm Jupiter WASP-80b taken with the NIRCam instrument of the JWST show strong evidence of CH_4 at greater than 6σ significance The abundances of main carbon- and oxygen-bearing gases in the atmospheres of ...
T. Bell +14 more
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Self-consistent atmosphere modeling with cloud formation for low-mass stars and exoplanets [PDF]
Astronomy & Astrophysics, 2017 Context: Low-mass stars and extrasolar planets have ultra-cool atmospheres where a rich chemistry occurs and clouds form. The increasing amount of spectroscopic observations for extrasolar planets requires self-consistent model atmosphere simulations to consistently include the formation processes that determine cloud formation and their feedback onto ...
D. Juncher +2 more
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Exoplanets and Their Characterization in the Environment of Galaxy Formation
Journal of Material Sciences and Engineering TechnologyThe exploration of exoplanets has emerged as a pivotal area of research in astrophysics, particularly in understanding their formation and evolution within the context of galaxy formation. This paper presents a comprehensive review of current methodologies for exoplanet detection and characterization, emphasizing the interplay between galactic dynamics
Diriba Gonfa Tolasa, Adugna Furi
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The Clear Sky Corridor: Insights Towards Aerosol Formation in Exoplanets Using An AI-based Survey of Exoplanet Atmospheres [PDF]
The Astronomical JournalAbstract Producing optimized and accurate transmission spectra of exoplanets from telescope data has traditionally been a manual and labor intensive procedure. Here we present the results of the first attempt to improve and standardize this procedure by using artificial-intelligence-based (AI-based) processing of light curves and ...
Reza Ashtari +6 more
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