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Oxygen isotope ratio studies in the Galactic center region

Published online by Cambridge University Press:  22 May 2014

JiangShui Zhang ,
Lulu Sun ,
Jianjie Qiu ,
Dengrong Lu  and
Min Wang
JiangShui Zhang
Affiliation:
Center for astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected]
Lulu Sun
Affiliation:
Center for astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected]
Jianjie Qiu
Affiliation:
Center for astrophysics, Guangzhou University, Guangzhou 510006, China email: [email protected]
Dengrong Lu
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
Min Wang
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
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Abstract

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Using the Delingha 13.7 m telescope with a 9-beam SIS superconducting receiver installed, we carried out mapping of C18O and C17O J = (1 − 0) toward molecular clouds in the central molecular zone (CMZ) and in the halo of our galaxy. From the integrated intensity ratio of C18O to C17O, the isotope ratio 18O/17O ratio can be estimated, which is considered to be one of the most useful tracers of nuclear processing and metal enrichment. Here preliminary results are presented toward Sgr A, Sgr B2, Sgr C, Sgr D, and the 1.°3 complex in the CMZ and M+5.3–0.3 in the halo.

Keywords

IsotoperatioOxygen
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. 123 - 125
Copyright
Copyright © International Astronomical Union 2014 

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