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A 3-mm molecular line study of the Central Molecular Zone of the Galaxy

Published online by Cambridge University Press:  01 February 2008

Paul A. Jones ,
Michael G. Burton  and
Vicki Lowe
Paul A. Jones
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia email: pjones@phys.unsw.edu.au
Michael G. Burton
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia email: pjones@phys.unsw.edu.au
Vicki Lowe
Affiliation:
School of Physics, University of New South Wales, NSW 2052, Australia email: pjones@phys.unsw.edu.au
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Abstract

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We are studying the Central Molecular Zone (CMZ) in the inner few degrees around the Galactic Centre, by mapping multiple 3-mm molecular lines, with the 22-m Mopra telescope. During 2006, we covered a 5 × 5 arcmin2 area of the Sagittarius B2 molecular cloud complex (Jones et al. 2008). We find substantial differences in chemical and physical conditions within the complex. We show some results here of Principal Component Analysis (PCA) of line features in this Sgr B2 area. During 2007 we covered the larger region of longitude −0.2 to 0.9 deg. and latitude -0.20 to 0.12 deg., including Sgr A and Sgr B2, in the frequency range 85.3 to 91.3 GHz. This includes lines of C3H2, CH3CCH, HOCO+, SO, H13CN, H13CO+, SO, H13NC, C2H, HNCO, HCN, HCO+, HNC, HC3N, 13CS and N2H+.

Keywords

ISM: moleculesradio lines: ISMastrochemistry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 257 - 262
Copyright
Copyright © International Astronomical Union 2008

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