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Paper: Bulge Asymmetries and Dynamic Evolution (BAaDE)
Volume: 497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time
Page: 499
Authors: Sjouwerman, L. O.; Pihlström, Y. M.; Claussen, M. J.; BAaDE Collaboration
Abstract: We have initiated the largest-ever survey of red giant SiO maser sources in the Galactic bulge and inner Galaxy. The SiO maser transitions at 43 and 86 GHz are not hindered by extinction, and yield extremely accurate stellar line-of-sight velocities (<1 km s-1) and positions. The detection of up to ∼20,000 red giant SiO maser sources will yield numbers comparable to optical surveys, with the additional strength of a much more thorough coverage of the highly obscured inner Galaxy. The sample is sufficient to trace complex Galactic structures and minority populations and yield luminous SiO masers suitable for follow-up orbit and parallax determination using VLBI.
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