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dc.contributor.author	Arce, Hector G.
dc.contributor.author	Borkin, Michelle Anne
dc.contributor.author	Goodman, Alyssa A.
dc.contributor.author	Pineda, Jaime Eduardo
dc.contributor.author	Halle, Michael Wilfred
dc.date.accessioned	2010-07-15T13:16:40Z
dc.date.issued	2010
dc.identifier.citation	Arce, Hector G., Michelle A. Borkin, Alyssa A. Goodman, Jaime E. Pineda, Michael W. Halle. 2010. The complete survey of outflows in Perseus. Astrophysical Journal 715(2): 1170-1190.	en_US
dc.identifier.issn	0004-637X	en_US
dc.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:4310840
dc.description.abstract	We present a study on the impact of molecular outflows in the Perseus molecular cloud complex using the COMPLETE Survey large-scale \(^{12}CO(1-0)\) and \(^{13}CO(1-0)\) maps. We used three-dimensional isosurface models generated in right ascension-declination-velocity space to visualize the maps. This rendering of the molecular line data allowed for a rapid and efficient way to search for molecular outflows over a large \((\sim16 deg^2)\) area. Our outflow-searching technique detected previously known molecular outflows as well as new candidate outflows. Most of these new outflow-related high-velocity features lie in regions that have been poorly studied before. These new outflow candidates more than double the amount of outflow mass, momentum, and kinetic energy in the Perseus cloud complex. Our results indicate that outflows have significant impact on the environment immediately surrounding localized regions of active star formation, but lack the energy needed to feed the observed turbulence in the entire Perseus complex. This implies that other energy sources, in addition to protostellar outflows, are responsible for turbulence on a global cloud scale in Perseus. We studied the impact of outflows in six regions with active star formation within Perseus of sizes in the range of 1-4 pc. We find that outflows have enough power to maintain the turbulence in these regions and enough momentum to disperse and unbind some mass from them. We found no correlation between outflow strength and star formation efficiency (SFE) for the six different regions we studied, contrary to results of recent numerical simulations. The low fraction of gas that potentially could be ejected due to outflows suggests that additional mechanisms other than cloud dispersal by outflows are needed to explain low SFEs in clusters.	en_US
dc.description.sponsorship	Astronomy	en_US
dc.language.iso	en_US	en_US
dc.publisher	American Astronomical Society	en_US
dc.relation.isversionof	doi:10.1088/0004-637X/715/2/1170	en_US
dash.license	OAP
dc.subject	turbulence	en_US
dc.subject	stars: formation	en_US
dc.subject	ISM: kinematics and dynamics	en_US
dc.subject	ISM: jets and outflows	en_US
dc.subject	ISM: individual objects (Perseus)	en_US
dc.subject	ISM: clouds	en_US
dc.title	The Complete Survey of Outflows in Perseus	en_US
dc.type	Journal Article	en_US
dc.description.version	Accepted Manuscript	en_US
dc.relation.journal	Astrophysical Journal	en_US
dash.depositing.author	Goodman, Alyssa A.
dc.date.available	2010-07-15T13:16:40Z

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  Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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