Astron. J., 133, 1307-1320 (2007/April-0)
Molecular CO outflows in the L1641-N cluster: kneading a cloud core.
STANKE T. and WILLIAMS J.P.
Abstract (from CDS):
We present results of 1.3 mm interferometric and single-dish observations of the center of the L1641-N cluster in Orion. Single-dish wide-field continuum and CO(2-1) observations reveal the presence of several molecular outflows driven by deeply embedded protostellar sources. At higher angular resolution, the dominant millimeter source in the cluster center is resolved into a pair of protostars (L1641-N MM1 and L1641-N MM3), each driving a collimated outflow, and a more extended, clumpy core. Low-velocity CO line-wing emission is spread widely over much of the cluster area. We detect and map the distribution of several other molecular transitions (13CO, C18O, 13CS, SO, CH3OH, CH3CN, and OCS). CH3CN and OCS may indicate the presence of a hot corino around L1641-N MM1. We tentatively identify a velocity gradient over L1641-N MM1 in CH3CN and OCS, oriented roughly perpendicular to the outflow direction, perhaps indicative of a circumstellar disk. An analysis of the energy and momentum load of the CO outflows, along with the notion that apparently a large volume fraction is affected by the multiple outflow activity, suggests that outflows from a population of low-mass stars might have a significant impact on clustered (and potentially high-mass) star formation.
Stars: Circumstellar Matter - ISM: Jets and Outflows - Stars: Formation - Turbulence
Fig.6: [SW2007] 1641-N MMN (Nos MM1 to MM4).
Status at CDS
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L1641-N cluster = [BDB2003] G210.06-19.59.
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