# The Complete Survey of Outflows in Perseus

 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