SIMBAD references

2011ApJ...737L..25M - Astrophys. J., 737, L25 (2011/August-2)

H2 CS in outflows of the massive star-forming core DR21(OH).

MINH Y.C., LIU S.-Y., CHEN H.-R. and SU Y.-N.

Abstract (from CDS):

For the first time, using the Submillimeter Array, H2 CS emission was observed to show a typical bipolar outflow morphology toward DR21(OH). The emission consisted of a strong concentration toward a hot molecular core (MM1a) and a symmetrically extended feature aligned roughly in the north-south direction. H2 CS is one of the hot core species, and its extended emission is expected to result from the interaction between the outflow of MM1a and the dense ambient gas. We derive H2 CS column densities of ∼3x1015/cm2 and ∼1x1015/cm2 toward MM1a and the centers of the extended emission, respectively. Its fractional abundance, f (H2CS) ∼ 10–9 relative to the total H2abundance, is comparable to those in other star-forming regions, suggesting that H2 CS may be present in a region closer to the center than previously thought. Our results suggest that the observed H2 CS emission arises via direct evaporation or sputtering of the solid H2 CS on the grain surface, and H2 CS may be one of the major sulfur-bearing species residing in the ice grain mantles in a solid form, at least in the case of DR21(OH).

Abstract Copyright:

Journal keyword(s): ISM: abundances - ISM: clouds - ISM: individual: DR21(OH) - ISM: molecules - stars: formation

CDS comments: In SIMBAD, subcores MM1a and MM1b are [ZLS2012] SMA7 and SMA6, respectively.

Simbad objects: 10

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