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44-GHz class I methanol maser survey towards 6.7-GHz class II methanol masers

Published online by Cambridge University Press:  24 July 2012

Do-Young Byun ,
Kee-Tae Kim  and
Jae-Han Bae
Do-Young Byun
Affiliation:
Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon, Republic of Korea email: bdy@kasi.re.kr
Kee-Tae Kim
Affiliation:
Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon, Republic of Korea email: bdy@kasi.re.kr
Jae-Han Bae
Affiliation:
Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon, Republic of Korea email: bdy@kasi.re.kr
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Abstract

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The Class II 6.7-GHz methanol maser is a tracer of high mass young stellar objects. We present results of a 44-GHz class I methanol maser and 22-GHz water maser survey using the KVN (Korean VLBI Network) 21-m single dish radio telescopes towards 284 6.7-GHz maser sites. Class I methanol maser and water maser emission is detected towards 116 (41%) and 136 (48%) sources, respectively. About 50 sources have a peak flux density higher than 10 Jy at 44-GHz. They are candidates for VLBI studies using the KVN.

Keywords

maserssurveysstars: formationstars: outflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 284 - 285
Copyright
Copyright © International Astronomical Union 2012

References

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