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The spiral structure of our Milky Way (1304.8001v1)
Published 28 Mar 2013 in astro-ph.GA
Abstract: The spiral structure of our Milky Way has not yet been well outlined. HII regions, giant molecular clouds (GMCs) and 6.7-GHz methanol masers are primary tracers for spiral arms. We collect and update the database of these tracers which has been used in Hou, Han & Shi (2009) for mapping the spiral structure.