Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-19T14:31:18.413Z Has data issue: false hasContentIssue false
  • English
  • Français

A 3mm SiO maser survey in the galactic bulge region

Published online by Cambridge University Press:  03 August 2017

Everton Lüdke ,
Victor Migenes ,
Ramesh Balasubramanyam  and
Nadiane C. Cassol
Everton Lüdke
Affiliation:
Universidade Federal de Santa Maria, CCNE-DEFIS-LARIE, Santa Maria RS 97150-900, Brazil
Victor Migenes
Affiliation:
Universidad de Guanajuato, Depto. de Astronomía, Aptdo. postal 144, GTO CP36000, Mexico
Ramesh Balasubramanyam
Affiliation:
The University of New South Wales, School of Physics, Sydney NSW 2052, Australia
Nadiane C. Cassol
Affiliation:
Universidade Federal de Santa Maria, CCNE-DEFIS-LARIE, Santa Maria RS 97150-900, Brazil

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We have made a blind survey of SiO masers, of the J=2-1 v = 1 transition, toward 106 bright OH/IR stars which have been previously detected in the OH main line at 1662 MHz with the ATCA in the galactic bulge by Sevenster et al (2000) and in the galactic disk at J=1-0 (v = 1 − 2) line by Miyazaki (2001). A comparison with published data shows that new SiO masers are detected for OH/IR stars in the galactic center, suggesting that those stars are undergoing strong mass loss with dense circumstellar envelopes with apparent angular sizes far smaller than the OH maser shell as obtained by interferometric observations. At the moment, our detection rate is about 23% and it may be increased when the project is completed.

Type
Part 2. Stellar Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 294 - 296
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Deguchi, S., & Iguchi, T., 1976, PASJ, 28, 307 Google Scholar
Haikala, L., 1990, AASS, 85, 875 Google Scholar
Kwan, J., & Scoville, N., 1974, ApJL, 265, L29 Google Scholar
Lewis, B.M., Eder, J., & Terzian, Y., 1990, ApJ, 362, 634 CrossRefGoogle Scholar
Miyazaki, A., Deguchi, S., Tsuboi, M., Kasuga, T., & Takano, S., 2001, PASJ, 53, 120 Google Scholar
Nakada, Y., Onaka, T., Yamamura, I., Deguchi, S., Ukita, N., & Izumiura, H., 1993, PASJ, 45, 179 Google Scholar
Sevenster, M., van Langevelde, H., Chapman, J., Habing, H., Kileen, N., 2000, A&A, 366, 481 Google Scholar
Zijlstra, A.A., Chapman, J.M., te Lintel Ekkert, P., Likkel, L., Comeron, F., Norris, R.P., Molster, F.J., & Cohen, R.J., 2001, MNRAS, 322, 280 CrossRefGoogle Scholar