High density tracers in outflow regions: NH3 vs. CS
López, R. ; Morata, O. ; Sepúlveda, I. ; Estalella, R. ; Anglada, G. ; Pastor, J. ; Planesas, P.
Springer
Published 1994
Springer
Published 1994
| ISSN: |
1572-946X
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|---|---|
| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract We present CS(J = 1 → 0) observations of the high density gas in a sample of eleven star forming regions with molecular or optical outflows. The sources of this sample cover a wide range of physical sizes. All these sources had been previously mapped in NH3 (1,1) with similar angular resolution. In all the sources of this sample CS emission was detected, indicating a global correlation between the emissions traced by the CS and the NH3 molecules. However, the detailed characteristics of these two emissions (e.g., the extent and the location of the emission peak) show, in general, significant differences in the sources which are well resolved by the beam. As a general trend, the emission traced by the NH3 molecule appears as compact clumps which engulf an outflow activity center. In contrast, the emission traced by the CS molecule, usually more extended, appears as a background which connects different outflow activity centers associated with each NH3 clump.
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| Type of Medium: |
Electronic Resource
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| URL: |