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SMA observations towards massive clouds in the central molecular zone

Published online by Cambridge University Press:  22 May 2014

Xing Lu ,
Qizhou Zhang ,
Jens Kauffmann  and
Thushara Pillai
Xing Lu
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA email: xlu@cfa.harvard.edu School of Astronomy & Space Science, Nanjing University, Nanjing 210093, Jiangsu, China
Qizhou Zhang
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA email: xlu@cfa.harvard.edu
Jens Kauffmann
Affiliation:
California Institute of Technology, Astronomy Department, 1200 East California Blvd., Pasadena, CA 91125, USA
Thushara Pillai
Affiliation:
California Institute of Technology, Astronomy Department, 1200 East California Blvd., Pasadena, CA 91125, USA
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Abstract

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Recently we conducted a mini-survey towards a sample of six massive clouds with surface density >1024 cm−2 in the central molecular zone (CMZ) of the Milky Way, with the SMA at 280 GHz in the compact array and at 230 GHz in the compact/subcompact arrays. The data reveal compact dust continuum peaks, some of which are also associated with organic molecular lines and thermal SiO emission. The subcompact array data helps recover more structures, e.g. the regularly spaced, well-aligned continuum fragments in the 20 km s−1 cloud. Shock tracers such as SiO are found in all the clouds. Our observations suggest potential protostellar origin for some of the dust continuum peaks in these regions.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 191 - 193
Copyright
Copyright © International Astronomical Union 2014 

References

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