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Simultaneous observations of SiO and H2O masers toward known stellar SiO and/or H2O maser sources

Published online by Cambridge University Press:  24 July 2012

Jaeheon Kim ,
Se-Hyung Cho  and
Sang Joon Kim
Jaeheon Kim
Affiliation:
Yonsei University Observatory and Department of Astronomy, Yonsei University, Seongsan-ro 262, Seodaemun, Seoul, 120-749, Republic of Korea e-mail: jhkim@kasi.re.kr Korean VLBI Network, Korea Astronomy and Space Science Institute, P.O. Box 88, Yonsei University, Seoul, 120-749, Republic of Korea e-mail: cho@kasi.re.kr Department of Astronomy and Space Science, Kyung Hee University, Yongin, Gyeonggi-Do, 446-701, Republic of Korea
Se-Hyung Cho
Affiliation:
Yonsei University Observatory and Department of Astronomy, Yonsei University, Seongsan-ro 262, Seodaemun, Seoul, 120-749, Republic of Korea e-mail: jhkim@kasi.re.kr Korean VLBI Network, Korea Astronomy and Space Science Institute, P.O. Box 88, Yonsei University, Seoul, 120-749, Republic of Korea e-mail: cho@kasi.re.kr
Sang Joon Kim
Affiliation:
Department of Astronomy and Space Science, Kyung Hee University, Yongin, Gyeonggi-Do, 446-701, Republic of Korea
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Abstract

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We present the results of simultaneous observations of SiO v = 1, 2, 29SiO v = 0, J = 1−0 and H2O 616-523 maser lines toward 318 known stellar SiO and/or H2O maser sources using the Yonsei 21-m radio telescope of the Korean VLBI Network. Toward 166 known SiO and H2O maser sources, both SiO and H2O maser emissions were detected from 112 sources giving a detection rate of 67.5 %. On the other hand, toward 152 known H2O-only maser sources, both SiO and H2O maser emissions were detected from 62 sources, giving a detection rate of 40.8 %. Characteristics of all observed sources in the IRAS two-color diagram is investigated including their evolutionary sequence and mutual relations between SiO and H2O maser properties.

Keywords

circumstellar mattermaserssurveysstars: AGB and post-AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 290 - 291
Copyright
Copyright © International Astronomical Union 2012

References

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