The Dynamics of Dense Cores in the Perseus Molecular Cloud II: the Relationship between Dense Cores and the Cloud

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The Dynamics of Dense Cores in the Perseus Molecular Cloud II: the Relationship between Dense Cores and the Cloud

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dc.contributor.author Kirk, Helen
dc.contributor.author Pineda, Jaime E.
dc.contributor.author Johnstone, Doug
dc.contributor.author Goodman, Alyssa A.
dc.date.accessioned 2011-04-18T19:33:08Z
dc.date.issued 2010
dc.identifier.citation Kirk, Helen, Jaime E. Pineda, Doug Johnstone, and Alyssa Goodman. The dynamics of dense cores in the Perseus molecular cloud II: the relationship between dense cores and the cloud. 2010. The Astrophysical Journal 723(1): 457-475. en_US
dc.identifier.issn 0004-637X en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:4854907
dc.description.abstract We utilize the extensive datasets available for the Perseus molecular cloud to analyze the relationship between the kinematics of small-scale dense cores and the larger structures in which they are embedded. The kinematic measures presented here can be used in conjunction with those discussed in our previous work as strong observational constraints that numerical simulations (or analytic models) of star formation should match. We find that dense cores have small motions with respect to the \(^{13}CO\) gas, about one third of the \(^{13}CO\) velocity dispersion along the same line of sight. Within each extinction region, the core- to-core velocity dispersion is about half of the total \((^{13}CO)\) velocity dispersion seen in the region. Large-scale velocity gradients account for roughly half of the total velocity dispersion in each region, similar to what is predicted from large-scale turbulent modes following a power spectrum of \(P(k) \alpha \ k^{−4}\). en_US
dc.description.sponsorship Astronomy en_US
dc.language.iso en_US en_US
dc.publisher Institute of Physics Publishing, Inc. en_US
dc.relation.isversionof doi:10.1088/0004-637X/723/1/457 en_US
dc.relation.hasversion http://arxiv.org/abs/1008.4527v1 en_US
dash.license OAP
dc.subject clouds en_US
dc.subject ISM en_US
dc.subject Perseus Molecular Cloud en_US
dc.subject kinematics and dynamics en_US
dc.subject molecules en_US
dc.subject turbulence en_US
dc.subject atomic and molecular physics en_US
dc.subject astrophysics and astroparticles en_US
dc.title The Dynamics of Dense Cores in the Perseus Molecular Cloud II: the Relationship between Dense Cores and the Cloud en_US
dc.type Journal Article en_US
dc.description.version Accepted Manuscript en_US
dc.relation.journal The Astrophysical Journal en_US
dash.depositing.author Goodman, Alyssa A.
dc.date.available 2011-04-18T19:33:08Z
dash.affiliation.other Harvard-Smithsonian Center for Astrophysics en_US

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  • FAS Scholarly Articles [7106]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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