Results 31 to 40 of about 219,960 (319)

The Statistical Analysis of Exoplanet and Host Stars Based on Multi-Satellite Data Observations

open access: yesUniverse
In recent years, the rapid development of exoplanet research has provided us with an opportunity to better understand planetary systems in the universe and to search for signs of life.
Yanke Tang   +7 more
doaj   +1 more source

Sporadic Spin-orbit Variations in Compact Multiplanet Systems and Their Influence on Exoplanet Climate

open access: yesThe 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
doaj   +1 more source

The Chemical Composition of an Extrasolar Minor Planet

open access: yes, 2007
We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth/Moon system. The asteroid may
B. Zuckerman   +7 more
core   +1 more source

Mathematical modeling of motion of the asteroid 99942 Apophis on the basis of Adams methods with a variable step size

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2008
: The choice of Adams methods with divided differences has been validated for solving of the equations of motion of small bodies of the Solar system. The numerical integration with a variable step size of differential equations of motion of the asteroid ...
V. V. Abramov
doaj   +1 more source

People Love to Name Things: Current Trends in Naming Minor Planets

open access: yesВопросы ономастики
After several introductory remarks regarding the onomastic terminology used for names of celestial objects, the article proposes a semantic and a limited formal analysis of the minor planet names officially published in 2022 by the International ...
Jan Holeš
doaj   +1 more source

Asteroid phase curves from Lowell observatory photometric database

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
We present results obtained from processing large photometric data base. We make use of low-precision (generally rounded to 0.1 mag) and low-accuracy (rms magnitude uncertainties of ±0.2 to 0.3 mag) data obtained from the Minor Planet Center and modified
D. A. Oszkiewicz   +6 more
doaj   +1 more source

DIGITAL ARCHIVE OF UKRVO: THE POSITIONAL ACCURACY OF MINOR PLANETS DETERMINATIONS

open access: yesOdessa Astronomical Publications, 2013
Scanning and astrometric processing of two 30x30 cm photographic plates with images of minor planets were conducted. The plates were obtained at the double wide-angle astrograph (DWAA, 400/2000) on the program of photographic sky survey and the program ...
V. Golovnya, V. Andruk
doaj   +1 more source

Giant Planet Occurrence in the Stellar Mass-Metallicity Plane [PDF]

open access: yes, 2010
Correlations between stellar properties and the occurrence rate of exoplanets can be used to inform the target selection of future planet search efforts and provide valuable clues about the planet formation process.
Aller, Kimberly M.   +3 more
core   +2 more sources

Constraints on Evolutionary Timescales for M Dwarf Planets from Dynamical Stability Arguments

open access: yesThe Astrophysical Journal, 2023
The diversity of dynamical conditions among exoplanets is now well established. Yet, the relevance of orbital dynamical timescales to biological evolutionary timescales is poorly understood.
Katie Teixeira, Sarah Ballard
doaj   +1 more source

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