Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.7202m&link_type=abstract
American Astronomical Society, AAS Meeting #212, #72.02; Bulletin of the American Astronomical Society, Vol. 40, p.259
Other
Scientific paper
Since the first detection of the atomic hydrogen (HI) 21 cm line in 1951, observers have used this line to map the spiral structure of the Milky Way. The early efforts to measure the rotation curve revealed bumps and wiggles in the inner Galaxy rotation curve that were immediately attributed to spiral structure. More than 50 years have passed and we are still using the kinematics of HI to study Milky Way spiral structure with ever increasing detail. In this talk I will review where we've come in the past 50 years towards understanding the spiral structure of the Galaxy from the kinematics of the HI line and describe some of the most recent results. I will present the latest inner Galaxy rotation curves and briefly discuss how we can use kinematics to help us understand the structure of the outer Galaxy. This talk will focus particularly on the identifying the strengths and weaknesses of using HI to study spiral structure and how it can be combined with other tracers to better understand the structure of the Milky Way.
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