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86 GHz SiO masers in late-type galactic bulge stars

Published online by Cambridge University Press:  03 August 2017

Maria Messineo ,
Harm Habing ,
Loránt Sjouwerman ,
Alain Omont  and
Karl Menten
Maria Messineo
Affiliation:
Leiden Observatory, P. O. Box 9513, 2300 RA Leiden, The Netherlands
Harm Habing
Affiliation:
Leiden Observatory, P. O. Box 9513, 2300 RA Leiden, The Netherlands
Loránt Sjouwerman
Affiliation:
JIVE, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Alain Omont
Affiliation:
Institut d'Astrophysique, 98bis Boulevard Arago, F 75014 Paris, France
Karl Menten
Affiliation:
MPIfR, Auf dem Hügel 69, D-53121 Bonn, Germany

Abstract

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We present 86 GHz (v = 1, J = 2 → 1) SiO maser line observations with the 30-m IRAM telescope of a small sample of late-type stars in the inner Galaxy. The stars were selected on basis of their infrared magnitudes and colors, and our first results show an instantaneous detection rate of ∼65%. The derived SiO maser fluxes and line-of-sight velocities indicate that the stars are located in the Galactic Bulge. The goals of the project are to study the relation between 86 GHz SiO maser emission and infrared properties of the stars, and to enlarge the number of known stellar line-of-sight velocity measurements. Combining the detections with measurements from other surveys (e.g. OH maser surveys) will allow a kinematic analysis of stellar orbits, and probe the dynamics of the inner Galaxy and its probable triaxial mass distribution.

Type
Part 2. Stellar Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 282 - 285
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Alcock, C., Allsman, R., Alves, D., et al. 1997, ApJ, 479, 119 CrossRefGoogle Scholar
Deguchi, S., Fujii, T., Izumiura, H., et al 2000, ApJS, 571, 2000 Google Scholar
de Vaucouleurs, G. 1964, in IAU Symp. 20, The Galaxy and the Magellanic Clouds, ed. Kerr, F. J. (Camberra: Australian Academy of Science), 195 Google Scholar
Glass, I. S., Matsumoto, S., Carter, B. S., & Sekiguchi, K. 2001, MNRAS, 321, 77 CrossRefGoogle Scholar
Glass, I. S. 1999, Handbook of infrared astronomy, ed. Univ. Press (Cambridge)CrossRefGoogle Scholar
Haikala, L. K., Nyman, L.-A., & Forsström, V. 1994, A&AS, 103, 107 Google Scholar
Hennebelle, P., Pérault, M., Teyssier, D., & Ganesh, S. 2001, A&A, 365, 598 Google Scholar
Jewell, P. R., Snyder, L. E., Walmsley, C. M., Wilson, T. L., & Gensheimer, P. D. 1991, A&A, 242, 211 Google Scholar
Lane, A. P. 1982, , University of Massachusetts Google Scholar
López-Corredoira, M., Hammersley, P. L., Garzon, F., et al. 2001, A&A, accepted Google Scholar
Nyman, L.-A., Johansson, L. E. B., & Booth, R. S. 1986, A&A, 160, 352 Google Scholar
Nyman, L.-A., Hall, P. J., & Le Bertre, T. 1993, A&A, 280, 551 Google Scholar
Omont, A., Ganesh, S., Alard, C., & et al. 1999, A&A, 348, 755 Google Scholar
Schultheis, M., Ganesh, S., Simon, G., & et al. 1999, A&A, 349L, 69 Google Scholar
Schultheis, M., Ganesh, S., Glass, I. S., & et al. 2000, A&A, 362, 215 Google Scholar
Sevenster, M. N. 1997, , University of Leiden Google Scholar
Sjouwerman, L. O., van Langevelde, H. J., Winnberg, A., & Habing, H. J. 1998, A&AS, 128, 35 Google Scholar
Teyssier, D., Hennebelle, P., & Pérault, M. 2001, in preparation Google Scholar
Vauterin, P., & Dejonghe, H. 1998, ApJ, 500, 233 CrossRefGoogle Scholar
Weiland, J. L., Arendt, R. G., Berriman, G. B., & et al. 1994, ApJ, 425L, 81 CrossRefGoogle Scholar