Matches in SemOpenAlex for { <https://semopenalex.org/work/W2097172661> ?p ?o ?g. }
- W2097172661 endingPage "665" @default.
- W2097172661 startingPage "652" @default.
- W2097172661 abstract "AU Microscopii is a 12 Myr old M dwarf that harbors an optically thin, edge-on disk of dust. The scattered light surface brightness falls with projected distance b from the star as b-α; within b = 43 AU, α ≈ 1-2, while outside 43 AU, α ≈ 4-5. We devise a theory to explain this profile. At a stellocentric distance r = rBR = 43 AU, we posit a ring of parent bodies on circular orbits: the ``birth ring,'' wherein micron-sized grains are born from the collisional attrition of parent bodies. The ``inner disk'' at r < rBR contains grains that migrate inward by corpuscular and Poynting-Robertson (CPR) drag. The ``outer disk'' at r > rBR comprises grains just large enough to remain bound to the star, on orbits rendered highly eccentric by stellar wind and radiation pressure. How the vertical optical depth τ⊥ scales with r depends on the fraction of grains that migrate inward by CPR drag without suffering a collision. If this fraction is large, the inner disk and birth ring share the same optical depth, and τ⊥ ∝ r-5/2 in the outer disk. By contrast, under collision-dominated conditions, the inner disk is empty, and τ⊥ ∝ r-3/2 outside. These scaling relations, which we derive analytically and confirm numerically, are robust against uncertainties in the grain size distribution. By simultaneously modeling the surface brightness and thermal spectrum, we break model degeneracies to establish that the AU Mic system is collision dominated and that its narrow birth ring contains a lunar mass of decimeter-sized bodies. The inner disk is devoid of micron-sized grains; the surface brightness at b ≲ 43 AU arises from light forward scattered by the birth ring. Inside b = 43 AU, the disk's V - H color should not vary with b; outside, the disk must become bluer as ever smaller grains are probed." @default.
- W2097172661 created "2016-06-24" @default.
- W2097172661 creator A5032207848 @default.
- W2097172661 creator A5074282470 @default.
- W2097172661 date "2006-09-01" @default.
- W2097172661 modified "2023-10-14" @default.
- W2097172661 title "Dust Dynamics, Surface Brightness Profiles, and Thermal Spectra of Debris Disks: The Case of AU Microscopii" @default.
- W2097172661 cites W1867591249 @default.
- W2097172661 cites W1964425044 @default.
- W2097172661 cites W1972551044 @default.
- W2097172661 cites W1978693245 @default.
- W2097172661 cites W1986034294 @default.
- W2097172661 cites W1990763154 @default.
- W2097172661 cites W1996228609 @default.
- W2097172661 cites W2000146957 @default.
- W2097172661 cites W2001265656 @default.
- W2097172661 cites W2008385987 @default.
- W2097172661 cites W2012821126 @default.
- W2097172661 cites W2019443657 @default.
- W2097172661 cites W2022546175 @default.
- W2097172661 cites W2025511264 @default.
- W2097172661 cites W2027135516 @default.
- W2097172661 cites W2029136094 @default.
- W2097172661 cites W2030924688 @default.
- W2097172661 cites W2044972413 @default.
- W2097172661 cites W2054170670 @default.
- W2097172661 cites W2056407334 @default.
- W2097172661 cites W2057906648 @default.
- W2097172661 cites W2059246118 @default.
- W2097172661 cites W2079492319 @default.
- W2097172661 cites W2082586708 @default.
- W2097172661 cites W2089310284 @default.
- W2097172661 cites W2092600854 @default.
- W2097172661 cites W2100118938 @default.
- W2097172661 cites W2103158982 @default.
- W2097172661 cites W2114083330 @default.
- W2097172661 cites W2116412082 @default.
- W2097172661 cites W2125065271 @default.
- W2097172661 cites W2127052500 @default.
- W2097172661 cites W2130268771 @default.
- W2097172661 cites W2130815858 @default.
- W2097172661 cites W2132191748 @default.
- W2097172661 cites W2136139132 @default.
- W2097172661 cites W2137555734 @default.
- W2097172661 cites W2139997228 @default.
- W2097172661 cites W2146441264 @default.
- W2097172661 cites W2150640273 @default.
- W2097172661 cites W2171332356 @default.
- W2097172661 cites W2554732597 @default.
- W2097172661 cites W3099139010 @default.
- W2097172661 cites W3101453926 @default.
- W2097172661 cites W3102416665 @default.
- W2097172661 cites W3102830476 @default.
- W2097172661 cites W4246450893 @default.
- W2097172661 cites W4250864308 @default.
- W2097172661 cites W4294389786 @default.
- W2097172661 doi "https://doi.org/10.1086/505736" @default.
- W2097172661 hasPublicationYear "2006" @default.
- W2097172661 type Work @default.
- W2097172661 sameAs 2097172661 @default.
- W2097172661 citedByCount "166" @default.
- W2097172661 countsByYear W20971726612012 @default.
- W2097172661 countsByYear W20971726612013 @default.
- W2097172661 countsByYear W20971726612014 @default.
- W2097172661 countsByYear W20971726612015 @default.
- W2097172661 countsByYear W20971726612016 @default.
- W2097172661 countsByYear W20971726612017 @default.
- W2097172661 countsByYear W20971726612018 @default.
- W2097172661 countsByYear W20971726612019 @default.
- W2097172661 countsByYear W20971726612020 @default.
- W2097172661 countsByYear W20971726612021 @default.
- W2097172661 countsByYear W20971726612022 @default.
- W2097172661 countsByYear W20971726612023 @default.
- W2097172661 crossrefType "journal-article" @default.
- W2097172661 hasAuthorship W2097172661A5032207848 @default.
- W2097172661 hasAuthorship W2097172661A5074282470 @default.
- W2097172661 hasBestOaLocation W20971726612 @default.
- W2097172661 hasConcept C100905312 @default.
- W2097172661 hasConcept C121332964 @default.
- W2097172661 hasConcept C125245961 @default.
- W2097172661 hasConcept C1276947 @default.
- W2097172661 hasConcept C153294291 @default.
- W2097172661 hasConcept C2779345167 @default.
- W2097172661 hasConcept C27896171 @default.
- W2097172661 hasConcept C44870925 @default.
- W2097172661 hasConcept C51244244 @default.
- W2097172661 hasConcept C68337447 @default.
- W2097172661 hasConcept C73411000 @default.
- W2097172661 hasConcept C91228026 @default.
- W2097172661 hasConcept C98444146 @default.
- W2097172661 hasConceptScore W2097172661C100905312 @default.
- W2097172661 hasConceptScore W2097172661C121332964 @default.
- W2097172661 hasConceptScore W2097172661C125245961 @default.
- W2097172661 hasConceptScore W2097172661C1276947 @default.
- W2097172661 hasConceptScore W2097172661C153294291 @default.
- W2097172661 hasConceptScore W2097172661C2779345167 @default.
- W2097172661 hasConceptScore W2097172661C27896171 @default.
- W2097172661 hasConceptScore W2097172661C44870925 @default.