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1.5. SiO maser sources in the Galactic bulge and a kinematic signature of the bar structure

Published online by Cambridge University Press:  25 May 2016

S. Deguchi
S. Deguchi*
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano 384-13, Japan

Abstract

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We are studying the kinematic structure of our Galaxy by detecting SiO maser lines around 43 GHz with the Nobeyama 45-m telescope. Till today, about 500 IRAS sources (AGB stars) in the central region of the Galaxy are observed and the radial velocities of about 300 detected sources are obtained. The longitude-velocity map of SiO sources clearly shows a presence of forbidden regions (holes) which are located at the same positions of HI and CO holes. The presence of holes is interpreted as a streaming motions of stars due to a bar structure of the Galactic bulge

Type
Part I. Stellar Cluster, Star Formation
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 25 - 26
Copyright
Copyright © Kluwer 1998 

References

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