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Density and kinematics of the W49A cloud core

Published online by Cambridge University Press:  03 August 2017

E. Serabyn  and
R. Güsten
E. Serabyn
Affiliation:
Division of Physics, Mathematics and Astronomy California Institute of Technology, 320-47 Pasadena, CA 91125
R. Güsten
Affiliation:
Max-Planck-Institut für Radioastronomie Auf dem Hügel 69, 5300 Bonn 1, FRG

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The dense core of the W49A molecular cloud (Miyawaki et al. 1986, Schloerb et al. 1987) has been mapped in 5 different transitions of CS and C34S, in order to determine its density structure. The three lower frequency transitions (CS J=3-2, CS J=5-4 and C34S J=5-4) were observed with the IRAM 30m telescope, and the two highest frequency transitions (CS J=7-6 and C34S J=7-6) with the Caltech Submillimeter Observatory. The beamsizes were in the range 12″ to 20″. As a calibration check, the CS J=7-6 line was observed with both telescopes, and was found to give a consistent temperature scale. The spectra at the peak of the emission are shown in Fig. 1.

Type
Poster Sessions
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 494 - 495
Copyright
Copyright © Kluwer 1991 

References

Dickel, H.R. and Goss, W.M.: 1990, Astrophys. J., 351, 189.Google Scholar
Miyawaki, R., Hayashi, M. and Hasegawa, T.: 1986, Astrophys. J., 305, 353.Google Scholar
Schloerb, F.P., Snell, R.L. and Schwartz, RR.: 1987, Astrophys. J., 319, 427.Google Scholar
Welch, W.J., Dreher, J.W., Jackson, J.M., Terebey, S. and Vogel, S.N.: 1987, Science, 238, 1550.Google Scholar