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Interferometric 3mm spectral line and continuum survey of the central molecular zone

Published online by Cambridge University Press:  22 May 2014

Marc W. Pound  and
Farhad Yusef-Zadeh
Marc W. Pound
Affiliation:
Department of Astronomy, University of Maryland, College Park, MD 20742, USA email: [email protected]
Farhad Yusef-Zadeh
Affiliation:
Dept. of Physics & Astronomy, Northwestern University, Evanston, IL 60208, USA email: [email protected]
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Abstract

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Because of its large angular extent, the central molecular zone (CMZ) has to date only been mapped in the mm with single dish telescopes, with resolution about 30″ (1.4 pc). We present the first interferometric maps of a 90 × 50 pc region of the CMZ, with spatial resolution of ∼10″ (0.4 pc). We mapped ∼0.25 square degrees of the CMZ with CARMA in 3mm continuum and the spectral lines SiO J = (2 − 1), HCO+J = (1 − 0), HCN J = (1 − 0), N2H+J = (1 − 0), and CS J = (2 − 1), covering roughly VLSR = −200 to 200 km s−1 with spectral resolution ΔV ∼ 2.5 km s−1. To recover the large scale structure resolved out by the interferometer, the continuum-subtracted spectral line images were combined with the Mopra 22-m telescope survey.

Keywords

Galaxy: centerISM: cloudsradio lines: ISM
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. 114 - 116
Copyright
Copyright © International Astronomical Union 2014 

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