Matches in SemOpenAlex for { <https://semopenalex.org/work/W3037838637> ?p ?o ?g. }
- W3037838637 endingPage "121" @default.
- W3037838637 startingPage "121" @default.
- W3037838637 abstract "Stellar kinematics provides the key to understanding the formation process and dynamical evolution of stellar systems. Here, we present a kinematic study of the massive star-forming region (SFR) W4 in the Cassiopeia OB6 association using the Gaia Data Release 2 and high-resolution optical spectra. This SFR is composed of a core cluster (IC 1805) and a stellar population distributed over 20 pc, which is a typical structural feature found in many OB associations. According to a classical model, this structural feature can be understood in the context of the dynamical evolution of a star cluster. The core-extended structure exhibits internally different kinematic properties. Stars in the core have an almost isotropic motion, and they appear to reach virial equilibrium given their velocity dispersion (0.9 ± 0.3 km s−1) comparable to that in a virial state (∼0.8 km s−1). On the other hand, the distributed population shows a clear pattern of radial expansion. From the N-body simulation for the dynamical evolution of a model cluster in subvirial state, we reproduce the observed structure and kinematics of stars. This model cluster experiences collapse for the first 2 Myr. Some members begin to radially escape from the cluster after the initial collapse, eventually forming a distributed population. The internal structure and kinematics of the model cluster appear similar to those of W4. Our results support the idea that the stellar population distributed over 20 pc in W4 originate from the dynamical evolution of IC 1805." @default.
- W3037838637 created "2020-07-02" @default.
- W3037838637 creator A5005848430 @default.
- W3037838637 creator A5009928748 @default.
- W3037838637 creator A5021370060 @default.
- W3037838637 creator A5034967214 @default.
- W3037838637 creator A5061817959 @default.
- W3037838637 creator A5062357183 @default.
- W3037838637 creator A5088479767 @default.
- W3037838637 creator A5091631248 @default.
- W3037838637 date "2020-08-19" @default.
- W3037838637 modified "2023-10-03" @default.
- W3037838637 title "The Origin of a Distributed Stellar Population in the Star-forming Region W4" @default.
- W3037838637 cites W1968245305 @default.
- W3037838637 cites W1969821340 @default.
- W3037838637 cites W1972327829 @default.
- W3037838637 cites W1976083405 @default.
- W3037838637 cites W2003427771 @default.
- W3037838637 cites W2012541253 @default.
- W3037838637 cites W2016888075 @default.
- W3037838637 cites W2016991713 @default.
- W3037838637 cites W2017363126 @default.
- W3037838637 cites W2023409203 @default.
- W3037838637 cites W2025382537 @default.
- W3037838637 cites W2041057101 @default.
- W3037838637 cites W2041149636 @default.
- W3037838637 cites W2041508062 @default.
- W3037838637 cites W2045964520 @default.
- W3037838637 cites W2048092465 @default.
- W3037838637 cites W2052243076 @default.
- W3037838637 cites W2057442093 @default.
- W3037838637 cites W2062358841 @default.
- W3037838637 cites W2069930188 @default.
- W3037838637 cites W2073360049 @default.
- W3037838637 cites W2082931408 @default.
- W3037838637 cites W2085631143 @default.
- W3037838637 cites W2092920084 @default.
- W3037838637 cites W2096393314 @default.
- W3037838637 cites W2119125521 @default.
- W3037838637 cites W2129760210 @default.
- W3037838637 cites W2138364588 @default.
- W3037838637 cites W2140332640 @default.
- W3037838637 cites W2140490206 @default.
- W3037838637 cites W2151868168 @default.
- W3037838637 cites W2172177365 @default.
- W3037838637 cites W2237677803 @default.
- W3037838637 cites W2465609377 @default.
- W3037838637 cites W2485876312 @default.
- W3037838637 cites W2584647280 @default.
- W3037838637 cites W2601053151 @default.
- W3037838637 cites W2791770373 @default.
- W3037838637 cites W2798336535 @default.
- W3037838637 cites W2800183610 @default.
- W3037838637 cites W2842352012 @default.
- W3037838637 cites W2921313352 @default.
- W3037838637 cites W2944969888 @default.
- W3037838637 cites W2950129351 @default.
- W3037838637 cites W2973605978 @default.
- W3037838637 cites W2979684504 @default.
- W3037838637 cites W3098240384 @default.
- W3037838637 cites W3099418854 @default.
- W3037838637 cites W3099456541 @default.
- W3037838637 cites W3099915657 @default.
- W3037838637 cites W3100189985 @default.
- W3037838637 cites W3100481918 @default.
- W3037838637 cites W3103584172 @default.
- W3037838637 cites W3103663129 @default.
- W3037838637 cites W3104153708 @default.
- W3037838637 cites W3104378265 @default.
- W3037838637 cites W3104994937 @default.
- W3037838637 cites W3105094438 @default.
- W3037838637 cites W3126137713 @default.
- W3037838637 cites W4245621907 @default.
- W3037838637 cites W4289710306 @default.
- W3037838637 cites W4292508300 @default.
- W3037838637 cites W4296577362 @default.
- W3037838637 doi "https://doi.org/10.3847/1538-4357/aba0a3" @default.
- W3037838637 hasPublicationYear "2020" @default.
- W3037838637 type Work @default.
- W3037838637 sameAs 3037838637 @default.
- W3037838637 citedByCount "9" @default.
- W3037838637 countsByYear W30378386372021 @default.
- W3037838637 countsByYear W30378386372022 @default.
- W3037838637 countsByYear W30378386372023 @default.
- W3037838637 crossrefType "journal-article" @default.
- W3037838637 hasAuthorship W3037838637A5005848430 @default.
- W3037838637 hasAuthorship W3037838637A5009928748 @default.
- W3037838637 hasAuthorship W3037838637A5021370060 @default.
- W3037838637 hasAuthorship W3037838637A5034967214 @default.
- W3037838637 hasAuthorship W3037838637A5061817959 @default.
- W3037838637 hasAuthorship W3037838637A5062357183 @default.
- W3037838637 hasAuthorship W3037838637A5088479767 @default.
- W3037838637 hasAuthorship W3037838637A5091631248 @default.
- W3037838637 hasBestOaLocation W30378386371 @default.
- W3037838637 hasConcept C110472602 @default.
- W3037838637 hasConcept C113461152 @default.
- W3037838637 hasConcept C121332964 @default.
- W3037838637 hasConcept C125857072 @default.