Matches in SemOpenAlex for { <https://semopenalex.org/work/W2155695230> ?p ?o ?g. }
- W2155695230 endingPage "55" @default.
- W2155695230 startingPage "55" @default.
- W2155695230 abstract "The spatial morphology and dynamical status of a young, still-forming stellar cluster provide valuable clues on the conditions during the star formation event and the processes that regulated it. We analyze the Orion Nebula Cluster (ONC), utilizing the latest censuses of its stellar content and membership estimates over a large wavelength range. We determine the center of mass of the ONC, and study the radial dependence of angular substructure. The core appears rounder and smoother than the outskirts, consistent with a higher degree of dynamical processing. At larger distances the departure from circular symmetry is mostly driven by the elongation of the system, with very little additional substructure, indicating a somewhat evolved spatial morphology or an expanding halo. We determine the mass density profile of the cluster, which is well fitted by a power law that is slightly steeper than a singular isothermal sphere. Together with the ISM density, estimated from average stellar extinction, the mass content of the ONC is insufficient by a factor $sim 1.8$ to reproduce the observed velocity dispersion from virialized motions, in agreement with previous assessments that the ONC is moderately supervirial. This may indicate recent gas dispersal. Based on the latest estimates for the age spread in the system and our density profiles, we find that, at the half-mass radius, 90% of the stellar population formed within $sim 5$-$8$ free-fall times ($t_{rm ff}$). This implies a star formation efficiency per $t_{rm ff}$ of $epsilon_{rm ff}sim 0.04$-$0.07$, i.e., relatively slow and inefficient star formation rates during star cluster formation." @default.
- W2155695230 created "2016-06-24" @default.
- W2155695230 creator A5035124065 @default.
- W2155695230 creator A5056069837 @default.
- W2155695230 creator A5067117622 @default.
- W2155695230 date "2014-10-13" @default.
- W2155695230 modified "2023-10-14" @default.
- W2155695230 title "THE STRUCTURE, DYNAMICS, AND STAR FORMATION RATE OF THE ORION NEBULA CLUSTER" @default.
- W2155695230 cites W1927915804 @default.
- W2155695230 cites W1972188641 @default.
- W2155695230 cites W1974390459 @default.
- W2155695230 cites W1976083405 @default.
- W2155695230 cites W1983332987 @default.
- W2155695230 cites W1996151206 @default.
- W2155695230 cites W1998463060 @default.
- W2155695230 cites W2000566616 @default.
- W2155695230 cites W2002129562 @default.
- W2155695230 cites W2003334784 @default.
- W2155695230 cites W2008318720 @default.
- W2155695230 cites W2011759989 @default.
- W2155695230 cites W2011819599 @default.
- W2155695230 cites W2018038719 @default.
- W2155695230 cites W2030203126 @default.
- W2155695230 cites W2034343052 @default.
- W2155695230 cites W2037585454 @default.
- W2155695230 cites W2039850018 @default.
- W2155695230 cites W2045159477 @default.
- W2155695230 cites W2046107700 @default.
- W2155695230 cites W2048619290 @default.
- W2155695230 cites W2057442093 @default.
- W2155695230 cites W2060949467 @default.
- W2155695230 cites W2062358841 @default.
- W2155695230 cites W2064528785 @default.
- W2155695230 cites W2065313576 @default.
- W2155695230 cites W2070765014 @default.
- W2155695230 cites W2077886266 @default.
- W2155695230 cites W2078778333 @default.
- W2155695230 cites W2080254441 @default.
- W2155695230 cites W2088763329 @default.
- W2155695230 cites W2093562129 @default.
- W2155695230 cites W2104177128 @default.
- W2155695230 cites W2108982802 @default.
- W2155695230 cites W2114775758 @default.
- W2155695230 cites W2121627678 @default.
- W2155695230 cites W2129760210 @default.
- W2155695230 cites W2134393157 @default.
- W2155695230 cites W2142220522 @default.
- W2155695230 cites W2148165343 @default.
- W2155695230 cites W2168987090 @default.
- W2155695230 cites W2276552634 @default.
- W2155695230 cites W2601507719 @default.
- W2155695230 cites W2964269547 @default.
- W2155695230 cites W3098131598 @default.
- W2155695230 cites W3098479185 @default.
- W2155695230 cites W3099273144 @default.
- W2155695230 cites W3100345724 @default.
- W2155695230 cites W3100716260 @default.
- W2155695230 cites W3101690914 @default.
- W2155695230 cites W3102298645 @default.
- W2155695230 cites W3103660106 @default.
- W2155695230 cites W3104293877 @default.
- W2155695230 cites W3105094438 @default.
- W2155695230 cites W3105850842 @default.
- W2155695230 cites W3106103873 @default.
- W2155695230 cites W3106286048 @default.
- W2155695230 cites W3106366246 @default.
- W2155695230 cites W3121627905 @default.
- W2155695230 cites W3122474463 @default.
- W2155695230 cites W3123824622 @default.
- W2155695230 cites W3125137869 @default.
- W2155695230 cites W3126137713 @default.
- W2155695230 cites W4293258861 @default.
- W2155695230 cites W4297993273 @default.
- W2155695230 doi "https://doi.org/10.1088/0004-637x/795/1/55" @default.
- W2155695230 hasPublicationYear "2014" @default.
- W2155695230 type Work @default.
- W2155695230 sameAs 2155695230 @default.
- W2155695230 citedByCount "60" @default.
- W2155695230 countsByYear W21556952302015 @default.
- W2155695230 countsByYear W21556952302016 @default.
- W2155695230 countsByYear W21556952302017 @default.
- W2155695230 countsByYear W21556952302018 @default.
- W2155695230 countsByYear W21556952302019 @default.
- W2155695230 countsByYear W21556952302020 @default.
- W2155695230 countsByYear W21556952302021 @default.
- W2155695230 countsByYear W21556952302022 @default.
- W2155695230 countsByYear W21556952302023 @default.
- W2155695230 crossrefType "journal-article" @default.
- W2155695230 hasAuthorship W2155695230A5035124065 @default.
- W2155695230 hasAuthorship W2155695230A5056069837 @default.
- W2155695230 hasAuthorship W2155695230A5067117622 @default.
- W2155695230 hasBestOaLocation W21556952302 @default.
- W2155695230 hasConcept C101991246 @default.
- W2155695230 hasConcept C120665830 @default.
- W2155695230 hasConcept C121332964 @default.
- W2155695230 hasConcept C125857072 @default.
- W2155695230 hasConcept C127413603 @default.
- W2155695230 hasConcept C127529279 @default.