FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1984927679> ?p ?o ?g. }

• W1984927679 endingPage "519" @default.
• W1984927679 startingPage "510" @default.
• W1984927679 abstract "Processes such as the solar wind sputtering and micrometeorite impacts can modify optical properties of surfaces of airless bodies. This explains why spectra of the main belt asteroids, exposed to these `space weathering' processes over eons, do not match the laboratory spectra of ordinary chondrite (OC) meteorites. In contrast, an important fraction of Near Earth Asteroids (NEAs), defined as Q-types in the asteroid taxonomy, display spectral attributes that are a good match to OCs. Here we study the possibility that the Q-type NEAs underwent recent encounters with the terrestrial planets and that the tidal gravity (or other effects) during these encounters exposed fresh OC material on the surface (thus giving it the Q-type spectral properties). We used numerical integrations to determine the statistics of encounters of NEAs to planets. The results were used to calculate the fraction and orbital distribution of Q-type asteroids expected in the model as a function of the space weathering timescale, t_sw (see main text for definition), and maximum distance, r*, at which planetary encounters can reset the surface. We found that t_sw ~ 1e6 yr (at 1 AU) and r* ~ 5 R_pl, where R_pl is the planetary radius, best fit the data. Values t_sw < 1e5 yr would require that r* > 20 R_pl, which is probably implausible because these very distant encounters should be irrelevant. Also, the fraction of Q-type NEAs would be probably much larger than the one observed if t_sw > 1e7 yr. We found that t_sw ~ q^2, where q is the perihelion distance, expected if the solar wind sputtering controls t_sw, provides a better match to the orbital distribution of Q-type NEAs than models with fixed t_sw. We also discuss how the Earth magnetosphere and radiation effects such as YORP can influence the spectral properties of NEAs." @default.
• W1984927679 created "2016-06-24" @default.
• W1984927679 creator A5004357384 @default.
• W1984927679 creator A5015258205 @default.
• W1984927679 creator A5015951526 @default.
• W1984927679 creator A5028875386 @default.
• W1984927679 creator A5081729426 @default.
• W1984927679 date "2010-10-01" @default.
• W1984927679 modified "2023-10-17" @default.
• W1984927679 title "Do planetary encounters reset surfaces of near Earth asteroids?" @default.
• W1984927679 cites W110610585 @default.
• W1984927679 cites W1617188689 @default.
• W1984927679 cites W1965891202 @default.
• W1984927679 cites W1976860825 @default.
• W1984927679 cites W1982094487 @default.
• W1984927679 cites W1983510407 @default.
• W1984927679 cites W1989033868 @default.
• W1984927679 cites W1989382923 @default.
• W1984927679 cites W1990856664 @default.
• W1984927679 cites W1995350618 @default.
• W1984927679 cites W2007451448 @default.
• W1984927679 cites W2012336836 @default.
• W1984927679 cites W2023688816 @default.
• W1984927679 cites W2027657785 @default.
• W1984927679 cites W2035125273 @default.
• W1984927679 cites W2035542287 @default.
• W1984927679 cites W2043776862 @default.
• W1984927679 cites W2049683407 @default.
• W1984927679 cites W2057737559 @default.
• W1984927679 cites W2058321404 @default.
• W1984927679 cites W2059764349 @default.
• W1984927679 cites W2064513574 @default.
• W1984927679 cites W2067623036 @default.
• W1984927679 cites W2067702491 @default.
• W1984927679 cites W2071054355 @default.
• W1984927679 cites W2071161573 @default.
• W1984927679 cites W2072737533 @default.
• W1984927679 cites W2080959113 @default.
• W1984927679 cites W2085879809 @default.
• W1984927679 cites W2090504047 @default.
• W1984927679 cites W2103736434 @default.
• W1984927679 cites W2106127036 @default.
• W1984927679 cites W2111282277 @default.
• W1984927679 cites W2117730334 @default.
• W1984927679 cites W2118716221 @default.
• W1984927679 cites W2124400970 @default.
• W1984927679 cites W2126086415 @default.
• W1984927679 cites W2126745755 @default.
• W1984927679 cites W2128285906 @default.
• W1984927679 cites W2132238902 @default.
• W1984927679 cites W2136858939 @default.
• W1984927679 cites W2137716690 @default.
• W1984927679 cites W2139359797 @default.
• W1984927679 cites W2143388220 @default.
• W1984927679 cites W2144804653 @default.
• W1984927679 cites W2161174583 @default.
• W1984927679 cites W3098951052 @default.
• W1984927679 doi "https://doi.org/10.1016/j.icarus.2010.05.003" @default.
• W1984927679 hasPublicationYear "2010" @default.
• W1984927679 type Work @default.
• W1984927679 sameAs 1984927679 @default.
• W1984927679 citedByCount "48" @default.
• W1984927679 countsByYear W19849276792012 @default.
• W1984927679 countsByYear W19849276792013 @default.
• W1984927679 countsByYear W19849276792014 @default.
• W1984927679 countsByYear W19849276792015 @default.
• W1984927679 countsByYear W19849276792016 @default.
• W1984927679 countsByYear W19849276792018 @default.
• W1984927679 countsByYear W19849276792019 @default.
• W1984927679 countsByYear W19849276792021 @default.
• W1984927679 countsByYear W19849276792022 @default.
• W1984927679 countsByYear W19849276792023 @default.
• W1984927679 crossrefType "journal-article" @default.
• W1984927679 hasAuthorship W1984927679A5004357384 @default.
• W1984927679 hasAuthorship W1984927679A5015258205 @default.
• W1984927679 hasAuthorship W1984927679A5015951526 @default.
• W1984927679 hasAuthorship W1984927679A5028875386 @default.
• W1984927679 hasAuthorship W1984927679A5081729426 @default.
• W1984927679 hasBestOaLocation W19849276792 @default.
• W1984927679 hasConcept C116862484 @default.
• W1984927679 hasConcept C121332964 @default.
• W1984927679 hasConcept C127313418 @default.
• W1984927679 hasConcept C1276947 @default.
• W1984927679 hasConcept C130635790 @default.
• W1984927679 hasConcept C151130387 @default.
• W1984927679 hasConcept C154010619 @default.
• W1984927679 hasConcept C178635117 @default.
• W1984927679 hasConcept C207677746 @default.
• W1984927679 hasConcept C2778994143 @default.
• W1984927679 hasConcept C2779700264 @default.
• W1984927679 hasConcept C38652104 @default.
• W1984927679 hasConcept C41008148 @default.
• W1984927679 hasConcept C44870925 @default.
• W1984927679 hasConcept C4839761 @default.
• W1984927679 hasConcept C51244244 @default.
• W1984927679 hasConcept C539450922 @default.
• W1984927679 hasConcept C58142911 @default.
• W1984927679 hasConcept C87355193 @default.

• next