SIMBAD references

2000ApJS..131..465A - Astrophys. J., Suppl. Ser., 131, 465-482 (2000/December-0)

Dense cores and molecular outflows in the OMC-2/3 region.

ASO Y., TATEMATSU K., SEKIMOTO Y., NAKANO T., UMEMOTO T., KOYAMA K. and YAMAMOTO S.

Abstract (from CDS):

We have observed the OMC-2/3 region in the H13CO+(1-0), HCO+(1-0), and CO(1-0) lines by using the Nobeyama 45 m radio telescope. We have identified 18 dense cores in H13CO+ and eight molecular outflows in CO and HCO+ in OMC-2/3. Four of these outflows are newly found. The line widths of the H13CO+ cores in OMC-2/3 are twice as large as those in dark clouds, and the momentum fluxes (P{dot}flow=PflowD=M{dot}flowVflow) of the outflows in OMC-2/3 are approximately 2 orders of magnitude larger than those of outflows in dark clouds. We found that the mass-loss rate of the outflow is proportional to the third power of the core velocity dispersion, which suggests that the outflow mass-loss rate is proportional to the mass infall rate onto the protostar. From a comparison between the properties of cores associated with protostars and those without protostars, we suggest that the dissipation of turbulence initiates star formation.

Abstract Copyright:

Journal keyword(s): ISM: Clouds - ISM: Individual: Alphanumeric: OMC-2 - ISM: Individual: Alphanumeric: OMC-3 - ISM: Jets and Outflows - ISM: Molecules - Radio Lines: ISM - Stars: Formation

Nomenclature: Table 2: [ATS2000] ACNN (Nos AC1-AC18).

Simbad objects: 65

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